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ASP.NET Core 8 Hosting - HostForLIFE.eu :: .NET MAUI Dev Express Charts

clock February 6, 2024 05:49 by author Peter

Use Devexpress Charts to give your.NET MAUI projects a boost! This blog post will walk you through the process of utilizing the free lifetime plugin Dev Express to implement the chart in.NET MAUI projects. With so many customization options, this plugin will jump straight to the implementation section.

Establishing the Project
To create a new project, launch Visual Studio 2022 and select Create a new project from the Start box.

Click the Next button after choosing the.NET MAUI App template and MAUI from the All project types drop-down menu in the Create a new project box.

Click the Next button after giving your project a name and selecting an appropriate location in the Configure your new project window.

Click the Create button located in the Additional Information window.

Once the project is created, we can able to see the Android, iOS, Windows, and other running options in the toolbar. Press the emulator or run button to build and run the app.

Install Plugin

  • Library Requirement: The Dev Express's Nuget link should be mapped as a package source and we need to install "DevExpress.Maui.Charts" into our project.
  • Installation via NuGet: Obtain the Charts library by searching for "DevExpress.Maui.Charts" in the NuGet Package Manager.
  • User Interface Guidance: Open the NuGet Package Manager interface to facilitate the installation process.
  • Visual Confirmation: The library, once searched, should appear as "DevExpress.Maui.Charts" in the NuGet interface.

Implementation
First, we need to open "MauiProgram.cs" and include the following namespace and line to allow the app to use the Chart Library.

using DevExpress.Maui;

.UseDevExpress()

Open the MainPage.xaml file and add the following namespace. (the page will be replaced according to you).
xmlns:dxc="clr-namespace:DevExpress.Maui.Charts;assembly=DevExpress.Maui.Charts"

Then, remove the default content and add an instance of the ChartView class to the page.

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:dxc="clr-namespace:DevExpress.Maui.Charts;assembly=DevExpress.Maui.Charts"
             x:Class="ScatterChartGetStarted.MainPage">
    <dxc:ChartView/>
</ContentPage>


Consider removing the event handlers from the code behind the default content. It is advisable to eliminate default styles (such as fonts, colors, and other settings) in the App.xaml file as well.

In this instance, the chart features a line series displaying the annual GDP for three countries. Generate a ViewModel.cs file that includes the following classes.
public class ViewModel {
    public CountryGdp GdpValueForUSA { get; }
    public CountryGdp GdpValueForChina { get; }
    public CountryGdp GdpValueForJapan { get; }

    public ViewModel() {
        GdpValueForUSA = new CountryGdp(
            "USA",
            new GdpValue(new DateTime(2020, 1, 1), 20.93),
            new GdpValue(new DateTime(2019, 1, 1), 21.43),
            new GdpValue(new DateTime(2018, 1, 1), 20.58),
            new GdpValue(new DateTime(2017, 1, 1), 19.391),
            new GdpValue(new DateTime(2016, 1, 1), 18.624),
            new GdpValue(new DateTime(2015, 1, 1), 18.121),
            new GdpValue(new DateTime(2014, 1, 1), 17.428),
            new GdpValue(new DateTime(2013, 1, 1), 16.692),
            new GdpValue(new DateTime(2012, 1, 1), 16.155),
            new GdpValue(new DateTime(2011, 1, 1), 15.518),
            new GdpValue(new DateTime(2010, 1, 1), 14.964)
        );
        GdpValueForChina = new CountryGdp(
            "China",
            new GdpValue(new DateTime(2020, 1, 1), 14.72),
            new GdpValue(new DateTime(2019, 1, 1), 14.34),
            new GdpValue(new DateTime(2018, 1, 1), 13.89),
            new GdpValue(new DateTime(2017, 1, 1), 12.238),
            new GdpValue(new DateTime(2016, 1, 1), 11.191),
            new GdpValue(new DateTime(2015, 1, 1), 11.065),
            new GdpValue(new DateTime(2014, 1, 1), 10.482),
            new GdpValue(new DateTime(2013, 1, 1), 9.607),
            new GdpValue(new DateTime(2012, 1, 1), 8.561),
            new GdpValue(new DateTime(2011, 1, 1), 7.573),
            new GdpValue(new DateTime(2010, 1, 1), 6.101)
        );
        GdpValueForJapan = new CountryGdp(
            "Japan",
            new GdpValue(new DateTime(2020, 1, 1), 4.888),
            new GdpValue(new DateTime(2019, 1, 1), 5.082),
            new GdpValue(new DateTime(2018, 1, 1), 4.955),
            new GdpValue(new DateTime(2017, 1, 1), 4.872),
            new GdpValue(new DateTime(2016, 1, 1), 4.949),
            new GdpValue(new DateTime(2015, 1, 1), 4.395),
            new GdpValue(new DateTime(2014, 1, 1), 4.850),
            new GdpValue(new DateTime(2013, 1, 1), 5.156),
            new GdpValue(new DateTime(2012, 1, 1), 6.203),
            new GdpValue(new DateTime(2011, 1, 1), 6.156),
            new GdpValue(new DateTime(2010, 1, 1), 5.700)
        );
    }
}

public class CountryGdp {
    public string CountryName { get; }
    public IList<GdpValue> Values { get; }

    public CountryGdp(string country, params GdpValue[] values) {
        this.CountryName = country;
        this.Values = new List<GdpValue>(values);
    }
}

public class GdpValue {
    public DateTime Year { get; }
    public double Value { get; }

    public GdpValue(DateTime year, double value) {
        this.Year = year;
        this.Value = value;
    }
}

In the MainPage.xaml file, incorporate three LineSeries objects into the ChartView.Series collection. To establish a connection between the series and data, assign each LineSeries object's Data property to a SeriesDataAdapter object. Utilize the adapter's properties to indicate the data source and fields containing arguments and values for each series.

Additionally, define a local XAML namespace referring to a CLR namespace encompassing the view model. Subsequently, employ the page's BindingContext property to link the view model with the view.
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:dxc="clr-namespace:DevExpress.Maui.Charts;assembly=DevExpress.Maui.Charts"
             xmlns:ios="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific;assembly=Microsoft.Maui.Controls"
             ios:Page.UseSafeArea="True"
             xmlns:local="clr-namespace:MauiDevExpress"
             x:Class="MauiDevExpress.MainPage">
    <ContentPage.BindingContext>
        <local:ViewModel/>
    </ContentPage.BindingContext>
    <dxc:ChartView>
        <dxc:ChartView.Series>
            <dxc:LineSeries DisplayName="{Binding GdpValueForUSA.CountryName}">
                <dxc:LineSeries.Data>
                    <dxc:SeriesDataAdapter DataSource="{Binding GdpValueForUSA.Values}"
                                           ArgumentDataMember="Year">
                        <dxc:ValueDataMember Type="Value" Member="Value"/>
                    </dxc:SeriesDataAdapter>
                </dxc:LineSeries.Data>
            </dxc:LineSeries>

            <dxc:LineSeries DisplayName="{Binding GdpValueForChina.CountryName}">
                <dxc:LineSeries.Data>
                    <dxc:SeriesDataAdapter DataSource="{Binding GdpValueForChina.Values}"
                                           ArgumentDataMember="Year">
                        <dxc:ValueDataMember Type="Value" Member="Value"/>
                    </dxc:SeriesDataAdapter>
                </dxc:LineSeries.Data>
            </dxc:LineSeries>

            <dxc:LineSeries DisplayName="{Binding GdpValueForJapan.CountryName}">
                <dxc:LineSeries.Data>
                    <dxc:SeriesDataAdapter DataSource="{Binding GdpValueForJapan.Values}"
                                           ArgumentDataMember="Year">
                        <dxc:ValueDataMember Type="Value" Member="Value"/>
                    </dxc:SeriesDataAdapter>
                </dxc:LineSeries.Data>
            </dxc:LineSeries>
        </dxc:ChartView.Series>
    </dxc:ChartView>
</ContentPage>

Configure the X-axis to display labels for years by assigning a DateTimeAxisX object with the specified settings to the ChartView.AxisX property.
<dxc:ChartView> <dxc:ChartView.AxisX>
    <dxc:DateTimeAxisX MeasureUnit="Year" GridAlignment="Year"
    GridSpacing="2"/> </dxc:ChartView.AxisX> </dxc:ChartView>


Configure the title and labels on the Y-axis. Set the ChartView.AxisY property to a NumericAxisY object and specify this object’s Title and Label properties.
<dxc:ChartView>
<!-- The X-axis config is here. -->
    <dxc:ChartView.AxisY>
        <dxc:NumericAxisY>
            <dxc:NumericAxisY.Title>
                <dxc:AxisTitle Text="Trillions of US$">
                    <dxc:AxisTitle.Style>
                        <dxc:TitleStyle>
                            <dxc:TitleStyle.TextStyle>
                                <dxc:TextStyle Size="16"/>
                            </dxc:TitleStyle.TextStyle>
                        </dxc:TitleStyle>
                    </dxc:AxisTitle.Style>
                </dxc:AxisTitle>
            </dxc:NumericAxisY.Title>
            <dxc:NumericAxisY.Label>
                <dxc:AxisLabel TextFormat="#.#" Position="Inside"/>
            </dxc:NumericAxisY.Label>
        </dxc:NumericAxisY>
    </dxc:ChartView.AxisY>
</dxc:ChartView>

Configure the legend position and orientation. Set the ChartView.Legend property to a Legend object, and specify this object’s properties as follows.
<dxc:ChartView>
    <dxc:ChartView.Legend>
        <dxc:Legend VerticalPosition="TopOutside"
                    HorizontalPosition="Center"
                    Orientation="LeftToRight"/>
    </dxc:ChartView.Legend>
</dxc:ChartView>

Establish the chart to showcase a series point hint as a crosshair cursor by setting the ChartView.Hint property to a Hint object and assigning a CrosshairHintBehavior object to Hint.Behavior. Subsequently, define the hint's content, data format, and visibility options. Set the LineSeries.HintOptions property to a SeriesCrosshairOptions object with the specified settings.
<ContentPage.Resources>
    <dxc:SeriesCrosshairOptions x:Key="lineSeriesHintOptions"
                                PointTextPattern="{}{S}: {V}M"
                                ShowInLabel="True"
                                AxisLabelVisible="True"
                                AxisLineVisible="True"/>
</ContentPage.Resources>
<dxc:ChartView>
    <dxc:ChartView.Hint>
        <dxc:Hint>
            <dxc:Hint.Behavior>
                <dxc:CrosshairHintBehavior GroupHeaderTextPattern="{}{A$YYYY}"
                                           MaxSeriesCount="3"/>
            </dxc:Hint.Behavior>
        </dxc:Hint>
    </dxc:ChartView.Hint>

    <dxc:ChartView.Series>
        <dxc:LineSeries HintOptions="{StaticResource lineSeriesHintOptions}">
            <!--Series Data-->
        </dxc:LineSeries>
        <dxc:LineSeries HintOptions="{StaticResource lineSeriesHintOptions}">
            <!--Series Data-->
        </dxc:LineSeries>
        <dxc:LineSeries HintOptions="{StaticResource lineSeriesHintOptions}">
            <!--Series Data-->
        </dxc:LineSeries>
    </dxc:ChartView.Series>
</dxc:ChartView>


Set the LineSeries.MarkersVisible property to True to display point markers. To change the line series appearance, set the LineSeries.Style property to a LineSeriesStyle object. This object’s Stroke, StrokeThickness, MarkerSize, and MarkerStyle properties allow you to configure the appearance of the series line and point markers.
<dxc:LineSeries MarkersVisible="True">
    <!--Series Data-->
    <dxc:LineSeries.Style>
        <dxc:LineSeriesStyle Stroke="#7145a7" StrokeThickness="2" MarkerSize="8">
            <dxc:LineSeriesStyle.MarkerStyle>
                <dxc:MarkerStyle Fill="#7145a7"/>
            </dxc:LineSeriesStyle.MarkerStyle>
        </dxc:LineSeriesStyle>
    </dxc:LineSeries.Style>
</dxc:LineSeries>




ASP.NET Core 8 Hosting - HostForLIFE.eu :: Integrate Health Checks Into a.NET Core Program

clock January 25, 2024 07:05 by author Peter

The following describes how to incorporate health checks into a.NET Core application:

1. Set up the NuGet package for Health Checks
You must install Microsoft.Extensions.Diagnostics in your project.The NuGet package HealthChecks. You can accomplish this by include the package reference in your project file or by using the Package Manager Console:
dotnet add package Microsoft.Extensions.Diagnostics.HealthChecks

2. Configure Health Checks
In your Startup.cs file, configure the health checks in the ConfigureServices method:
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Diagnostics.HealthChecks;

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddHealthChecks();
        // Add other services...
    }

    public void Configure(IApplicationBuilder app)
    {
        app.UseRouting();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapHealthChecks("/health");
            // Map other endpoints...
        });
    }
}

A health check endpoint at /health is configured in this example.

3. Explain Health Examinations

By including checks for other components, you can define health checks. You may wish to verify the state of an external API, a database connection, or any other crucial element. These checks can be included in the ConfigureServices method:
public void ConfigureServices(IServiceCollection services)
{
    services.AddHealthChecks()
        .AddSqlServer("YourConnectionString", name: "DatabaseHealthCheck")
        .AddUrlGroup(new Uri("https://api.example.com"), name: "ApiHealthCheck");
    // Add other services...
}

4. Execute and Verify
Launch your application at this point, and go to the health check endpoint (http://localhost:5000/health, for example). A JSON response with the status of each health check ought to appear.

In summary

  • The status of each check and any further information you supply are usually included in health check responses.
  • Health checks can be modified and expanded to meet your unique needs.

It's a good idea to include health checks if you want to make sure that your.NET Core application is reliable, particularly in production scenarios where you want to keep an eye on any problems and take proactive measures to address them.



ASP.NET Core 8 Hosting - HostForLIFE.eu :: Difference between .NET 7 and .NET 8

clock January 18, 2024 06:18 by author Peter

The differences between.NET 7 and.NET 8 can be better understood by contrasting their compatibility, integration powers, performance, and diagnostic features. A thorough grasp of these frameworks can also be attained by exploring the new features added in.NET 8 and comparing them with those of.NET 7. Examining these specifics can help identify the best version of the Microsoft.NET framework.

The improvements in.NET 8 constitute a noteworthy achievement for Microsoft, offering an extensive feature set with the goals of strengthening security, enhancing performance, enabling smooth integration, and streamlining maintenance. The question of whether the new features in.NET 8 are superior to those in.NET 7 is still up for dispute.

Examining the main distinctions between.NET 7 and.NET 8 is essential to obtain understanding and make wise choices about a possible upgrade. With the clarity this article will offer, it will be possible to comprehend the advantages and improvements brought forth by.NET 8.

Despite being created by Microsoft,.NET 8 and.NET 7 differ significantly. We've divided up their differences into categories based on a number of important factors, such as integration capabilities, cross-platform compatibility, performance, diagnostics, observability, and support services. It will enable you to fully comprehend how the two differ from one another.

1. Enhancements in Performance
Performance is one of the most important factors that developers consider when assessing technology for building applications. Notably,.NET 8 exhibits better optimization than.NET 7 in terms of speed and efficiency. A JIT (Just-In-Time) compiler is used by the Microsoft.NET framework in both versions, but in.NET 8, substantial improvements have been made to speed up code processing, leading to faster process execution and shorter loading times.

Furthermore, significant improvements to the runtime environment and garbage collector in.NET 8 also add to increased efficiency. With these improvements, companies can save a great deal of resources and maintain high performance even during busy hours.

2. Development Across Platforms

When it comes to facilitating the development of cross-platform compatible applications,.NET 8 outperforms.NET 7. .NET 8 is notably more capable than.NET 7 of facilitating the creation of programs customized for different hardware intrinsics.

  • AVX-512
  • Vector 512
  • Optimized support for ARM64 and WebAssembly

These enhancements expand the accessibility of your program, making it available to a larger range of users on desktop and mobile devices, covering a variety of operating systems such as Windows, Linux, macOS, and other platforms.

3. Assistance for Platforms
For every.NET version, Microsoft offers different support durations based on two main policies: LTS (Long Term Support) and STS (Short Term Support). Long Term Support (LTS) for the.NET 8 version ensures Microsoft's assistance from November 14, 2023, to November 10, 2026. On the other hand, May 14th, 2024 is when support for the Dotnet 7 version is supposed to end. Selecting.NET 8 guarantees improved upkeep and durability for the well-being of your program.

 

Version Latest patch version Patch release date Release type Support phase End of support
.NET 8 8.0.0 November 14, 2023 LTS Active November 10, 2026
.NET 7 7.0.14 November 14, 2023 STS Active May 14, 2024

4. Consolidation
In contrast to.NET 7, which necessitates that developers create unique code in order to integrate with APIs and other components,.NET 8 provides more convenience. Major integrated development environments, APIs, and services are all pre-supported by default. Additionally, the debugging features have been much enhanced, enabling better process execution and problem correction with less time commitment.

New Features in.NET 8

Now that we know why.NET 8 is better than.NET 7, it's imperative that you be familiar with all of its key characteristics. Comprehending these fundamental features of.NET 8 is essential as it confirms its place as a reliable technology for application development, outperforming.NET 7.

1. An improved source generator
When it comes to earlier iterations, the source generator included in.NET 8 is a major improvement. Microsoft has made significant improvements to System.Text.Json, bringing it closer to parity with the reflection-based serializer. Among the improvements included in.NET 8 are:

  • Support for the "init" and "required" properties when using the source generator to serialize types.
  • source-generated code formatted more neatly and systematically.
  • Two new diagnoses, SYSLIB1034 and SYSLIB1039, have been added.
  • Support for JsonStringEnumConverter<TEnum> is integrated into.NET 8.

2. Original AOT
By compiling only the essential parts rather than the complete codebase,.NET 8 apps improve code use with native AOT (Ahead-of-Time) compilation.

For instance, just the code specifically responsible for the login feature will be used when a user enters in with a.NET 8 application; the rest of the codebase stays in its current configuration. Thus, there are several benefits to this strategy.

  • Elimination of the need for a Just-In-Time compiler.
  • It increased the loading speed.
  • Conservation of network and memory resources.
  • Reduced execution time and resource costs.
  • Improved user experience and satisfaction.

3. Enhanced Artificial Intelligence Skills
AI integration is now more stable, quick, and smooth with.NET 8. The AI components in.NET 8 are the outcome of multiple technologies working together, including Qdrant, Microsoft Teams, Azure OpenAI, Milvus, and Azure Cognitive Search. Together, these many technological advances enable.NET 8 applications to leverage sophisticated artificial intelligence (AI) capabilities, producing outputs that are accurate and exact.
  
4. Elevated .NET MAUI
.NET 8 brings significant enhancements to .NET MAUI. Now, a single codebase caters to API 34 and XCode 15, enabling seamless operation of your .NET MAUI application across WinUI, iOS, Android, and Mac Catalyst systems.

5. SHA-3 Hashing Primitives
Compared to .NET 7, the security enhancements in .NET 8 are notably robust. It introduces support for configuring the SHA-3 hashing algorithm, ensuring compatibility with APIs that complement SHA-3 within your .NET 8 applications. The SHA-3 cryptography algorithms available in .NET 8 include.

  • SHA3_256, SHA3_384, and SHA3_512 (for Hashing purposes)
  • HMACSHA3_256, HMACSHA3_384, and HMACSHA3_512 (for HMAC usage)
  • HashAlgorithmName.SHA3_256, HashAlgorithmName.SHA3_384, and HashAlgorithmName.SHA3_512 (for developer-configurable algorithm settings)
  • RSAEncryptionPadding.OaepSHA3_256, RSAEncryptionPadding.OaepSHA3_384, and RSAEncryptionPadding.OaepSHA3_512 (for RSA OAEP encryption)

6. HTTPS Proxy

Support: Man-in-the-middle attacks are prevented with HTTPS proxy support, which.NET 8 brings to improve the security of client connections. By creating encrypted communication channels, this function protects the confidentiality and integrity of data.

Should you upgrade from .NET 7 to .NET 8?

Considering the analysis of various factors, .NET 8 is more advanced and proficient than .NET 7. So, you should upgrade your application to .NET 8.

Conclusion

.NET 8 stands out as a remarkable software development technology by Microsoft, surpassing .NET 7 in every aspect. From performance and integration to C# code compilation, observability, and support, .NET 8 excels in every aspect when compared. Moreover, .NET experts and professionals widely endorse .NET 8 for their projects.



ASP.NET Core 8 Hosting - HostForLIFE.eu :: Effective Bandwidth Management with.NET Core Techniques

clock January 12, 2024 07:28 by author Peter

In web development, response compression is an essential technique used to maximize the speed and responsiveness of HTTP applications. Response compression improves user experience, speeds up page loads, and uses less bandwidth by lowering the size of HTTP responses.


Advantages of Compression Response:

  • Enhanced Performance: Compression speeds up page loads by reducing the quantity of data sent over the network.
  • Decreased Bandwidth Usage: Less data transfer from compressed answers results in lower hosting and bandwidth expenses.
  • Improved SEO: Page load times are taken into account by search engines, which could result in a website that loads faster ranking better in search results.

Response Compression Implementation in.NET
Middleware can be used to implement response compression in a.NET web application. This is an example that makes use of AddResponseCompression, a.NET middleware.
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddResponseCompression(options =>
{
    options.EnableForHttps = true;
});

var app = builder.Build();
app.UseResponseCompression();
app.MapGet("/", () => "Hello World!");
app.Run();


In this example, EnableForHttps is set to true, but caution is advised due to potential security vulnerabilities like CRIME and BREACH attacks. It's recommended to use anti-forgery tokens to mitigate these risks.

builder.Services.AddResponseCompression(options =>
{
    options.EnableForHttps = true;
    options.Providers.Add<BrotliCompressProvider>();
    options.Providers.Add<GzipCompressProvider>();
    options.MimeTypes = ResponseCompressionDefaults.MimeTypes;
});


Compression Levels
Each compression provider has different compression levels.

builder.Services.Configure<BrotliCompressionProviderOptions>(options =>
{
    options.Level = CompressionLevel.SmallestSize;
});
builder.Services.Configure<GzipCompressProviderOptions>(options =>
{
    options.Level = CompressionLevel.Optimal;
});

These levels include Optimal, Fastest, No Compression, and Smallest Size.

Custom Providers

You can also create custom compression providers by implementing the ICompressionProvider interface.
builder.Services.AddResponseCompression(options =>
{
    options.Providers.Add<BrotliCompressionProvider>();
    options.Providers.Add<GzipCompressionProvider>();
    options.Providers.Add<CustomCompressionProvider>();
});


When to Compress and When not?

Compress responses that are not natively compressed (e.g., CSS, JS, HTML, XML, JSON). Avoid compressing natively compressed assets (e.g., PNG) and smaller files (150-1000 bytes).

Verifying Compression

To ensure compression is working, use middleware, set compression levels, and send requests from tools like Postman with different values of Accept-Encoding in the header.

Default MIME Types Supported

Common MIME types supported by default include text/CSS, text/XML, text/JSON, text/HTML, text/plain, application/XML, application/JSON, application/WASM, and application/javascript.

One useful method for improving the performance and user experience of web applications is to add response compression. Smaller HTTP response sizes result in quicker page loads, less bandwidth used, and possibly higher search engine ranks. A strong framework for effectively handling response compression is provided by the AddResponseCompression middleware in the.NET environment, in conjunction with providers such as Brotli and Gzip compression. It is imperative to take security concerns into account, particularly when enabling HTTPS compression. It is recommended to take steps to address potential vulnerabilities such as CRIME and BREACH attacks, such as implementing anti-forgery tokens.

Developers can adapt compression algorithms to individual application requirements thanks to the flexibility of bespoke compression providers. It is possible to adjust compression levels according to optimization, speed, or file size considerations. It's important to know when to apply compression, focusing on replies that aren't already compressed and avoiding it on smaller or previously compressed data. It is important to confirm that the compression settings you have put in place are working as intended by using tools such as Postman to verify the efficiency of the compression with different Accept-Encoding header variants.

Developers can further improve the effectiveness of response compression by covering a variety of frequently used content kinds by utilizing default MIME types for compression. To put it simply, response compression is a crucial component of web development that, when used carefully, greatly improves an application's overall functionality, responsiveness, and cost-effectiveness..



ASP.NET Core 8 Hosting - HostForLIFE.eu :: How Can I Make.NET Channels?

clock January 8, 2024 05:58 by author Peter

An essential feature to the asynchronous programming paradigm in.NET is channels. They offer a thread-safe method of data transfer between producers and consumers, improving application performance and scalability. The System is the foundation of channels.Threading.Namespaces and channels provide an adaptable and effective way to communicate.

How to Make a Channel in.NET?
To get started, let's develop a basic example that shows how to use and create a channel in.NET 8.0.

using System.Threading.Channels;

Console.WriteLine("Channels In .NET");

// Create an unbounded channel
var channel = Channel.CreateUnbounded<int>();

// Producer writing data to the channel
async Task ProduceAsync()
{
    for (int i = 0; i < 5; i++)
    {
        await channel.Writer.WriteAsync(i);
        Console.WriteLine($"Produced: {i}");
    }
    channel.Writer.Complete();
}

// Consumer reading data from the channel
async Task ConsumeAsync()
{
    while (await channel.Reader.WaitToReadAsync())
    {
        while (channel.Reader.TryRead(out var item))
        {
            Console.WriteLine($"Consumed: {item}");
        }
    }
}

// Run producer and consumer asynchronously
var producerTask = ProduceAsync();
var consumerTask = ConsumeAsync();

// Wait for both tasks to complete
await Task.WhenAll(producerTask, consumerTask);

Console.ReadLine();

An explanation of the example:

  • Using Channel, we construct an infinite channel of integers.ConstructUnbounded<int>().
  • As the producer, the ProduceAsync() method uses a channel to write data to the channel.Author.Use WriteAsync().
  • As the consumer, the ConsumeAsync() method uses the channel to read data from it.Peruser.TryRead().
  • Task allows both producer and consumer tasks to run asynchronously.WhenAll() to await their finish

Channel Properties in.NET
There are various options available with.NET Channels to manage data flow:

  • Boundary and Non-Boundary Channels: You can decide whether to let an infinite amount of objects through or restrict the capacity of the channel.
  • Completion: Use the channel to indicate that the channel is finished.Author.To indicate that the data stream has ended, use Complete().
  • Cancellation: To manage the channel activities lifetime, use cancellation tokens.
  • numerous Writers/Readers: Use channels to properly support numerous writers or readers.


ASP.NET Core 8 Hosting - HostForLIFE.eu :: How Can I Use Dapper to Create a Generic Repository in.NET Core?

clock January 4, 2024 06:11 by author Peter

We can utilize Dapper, an ORM (Object-Relational Mapper) or, more accurately, a Micro ORM, to interface with the database in our projects. Dapper allows us to write SQL statements just like we would in a SQL Server. Dapper works well since it doesn't convert.NET queries into SQL.


Dapper's SQL Injection safety is crucial to know since it allows us to perform parameterized queries, which is something we should do at all times. The fact that Dapper supports a variety of database providers is another crucial factor. In order to query our database, it offers helpful extension methods that extend ADO.NET's IDbConnection. Writing queries that work with our database provider is a must, of course.

Company.cs
using System.ComponentModel.DataAnnotations;

namespace DapperApp.Model
{
    public class Company
    {
        public int Id { get; set; }

        [Display(Name = "Company Name")]
        [Required(ErrorMessage = "Company Name is required")]
        public string CompanyName { get; set; }

        [Display(Name = "Company Address")]
        [Required(ErrorMessage = "Company Address is required")]
        public string CompanyAddress { get; set; }

        [Required(ErrorMessage = "Country is required")]
        public string Country { get; set; }

        [Display(Name = "Glassdoor Rating")]
        [Range(1, 5, ErrorMessage = "Glassdoor Rating must be between 1 and 5")]
        public int GlassdoorRating { get; set; }
    }
}

HomeController.cs
using Dapper;
using DapperApp.Model;
using DapperApp.Repository;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Data;

namespace DapperApp.ControllerApp
{
    public class HomeController : Controller
    {
        readonly IGenericRepository _genericController;

        public HomeController(IGenericRepository genericController)
        {
            _genericController = genericController;
        }
        // GET: HomeController
        public async Task<IActionResult> Index()
        {
            var query = "SELECT * FROM Companies";

            var companies = await _genericController.GetData<Company>(query);
            return View(companies);
        }

        // GET: HomeController/Details/5
        public async Task<IActionResult> Details(int id)
        {
            var query = "SELECT * FROM Companies WHERE Id = @Id";
            if (id == null)
            {
                return NotFound();
            }

            var company = await _genericController.GetDataById<Company>(query, id);
            if (company == null)
            {
                return NotFound();
            }

            return View(company);
        }

        // GET: HomeController/Create
        public ActionResult Create()
        {
            return View();
        }

        // POST: HomeController/Create
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("Id,CompanyName,CompanyAddress,Country,GlassdoorRating")] Company company)
        {
            var parameters = new DynamicParameters();
            parameters.Add("CompanyName", company.CompanyName, DbType.String);
            parameters.Add("CompanyAddress", company.CompanyAddress, DbType.String);
            parameters.Add("Country", company.Country, DbType.String);
            parameters.Add("GlassdoorRating", company.GlassdoorRating, DbType.Int32);
            var query = "INSERT INTO Companies (CompanyName, CompanyAddress, Country,GlassdoorRating) VALUES (@CompanyName, @CompanyAddress, @Country, @GlassdoorRating)";

            if (ModelState.IsValid)
            {
                await _genericController.CreateData(query, parameters);
                return RedirectToAction("Index");
            }
            return View(company);
        }


        // GET: HomeController/Edit/5
        public ActionResult Edit(int id)
        {
            return View();
        }

        // POST: HomeController/Edit/5
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Edit(int id, [Bind("Id,CompanyName,CompanyAddress,Country,GlassdoorRating")] Company company)
        {
            if (id != company.Id)
            {
                return NotFound();
            }
            var parameters = new DynamicParameters();
            parameters.Add("CompanyName", company.CompanyName, DbType.String);
            parameters.Add("CompanyAddress", company.CompanyAddress, DbType.String);
            parameters.Add("Country", company.Country, DbType.String);
            parameters.Add("GlassdoorRating", company.GlassdoorRating, DbType.Int32);
            parameters.Add("Id", company.Id, DbType.Int32);
            var query = "UPDATE Companies SET CompanyName = @CompanyName, CompanyAddress = @CompanyAddress, Country = @Country, GlassdoorRating = @GlassdoorRating WHERE Id = @Id";

            if (ModelState.IsValid)
            {
                await _genericController.UpdateData(query, parameters);
                return RedirectToAction("Index");
            }

            return View(company);
        }

        // GET: HomeController/Delete/5
        public ActionResult Delete(int id)
        {
            return View();
        }

        // POST: HomeController/Delete/5
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> DeleteConfirmed(int id)
        {
            var query = "DELETE FROM Companies WHERE Id = @Id";
            await _genericController.DeleteData(query, id);
            return RedirectToAction("Index");
        }
    }
}

DapperContext.cs

using System.Data;
using Microsoft.Data.SqlClient;

namespace DapperApp.Context
{
    public class DapperContext
    {
        private readonly IConfiguration _configuration;
        private readonly string _connectionString;
        public DapperContext(IConfiguration configuration)
        {
            _configuration = configuration;
            _connectionString = _configuration.GetConnectionString("DefaultConnection");
        }

        public IDbConnection CreateConnection() => new SqlConnection(_connectionString);
    }
}

IGenericRepository.cs

using DapperApp.Model;

namespace DapperApp.Repository
{
    public interface IGenericRepository
    {
        Task CreateData(string query, DynamicParameters parameters);
        Task DeleteData(string query, int id);
        Task<T> GetDataById<T>(string query, int id);
        Task<IEnumerable<T>> GetData<T>(string SQL, string DbName = "TEST");
        Task UpdateData(string query, DynamicParameters parameters);
    }
}

C#

GenericRepository.cs

using DapperApp.Context;
using DapperApp.Model;
using DapperApp.Repository;
using Dapper;
using Microsoft.Data.SqlClient;
using System.Data;

namespace DapperApp.Repository
{
    public class GenericRepository: IGenericRepository
    {
        readonly DapperContext _context;

        public GenericRepository(DapperContext context)
        {
            this._context = context;
        }

        public async Task<IEnumerable<T>> GetData<T>(string SQL, string DbName = "TEST")
        {

            using (var connection = _context.CreateConnection())
            {
                var companies = await connection.QueryAsync<T>(SQL);
                return companies.ToList();
            }
        }
        public async Task<T> GetDataById<T>(string query, int id)
        {
            using (var connection = _context.CreateConnection())
            {
                var company = await connection.QuerySingleOrDefaultAsync<T>(query, new { id });
                return company;
            }
        }

        public async Task CreateData(string query, DynamicParameters parameters)
        {

            using (var connection = _context.CreateConnection())
            {
                await connection.ExecuteAsync(query, parameters);
            }
        }

        public async Task UpdateData(string query, DynamicParameters parameters)
        {

            using (var connection = _context.CreateConnection())
            {
                await connection.ExecuteAsync(query, parameters);
            }
        }


        public async Task DeleteData(string query, int id)
        {
            using (var connection = _context.CreateConnection())
            {
                await connection.ExecuteAsync(query, new { id });
            }
        }

    }
}



ASP.NET Core 8 Hosting - HostForLIFE.eu :: Unleash the Power of SuperInject with.NET Dependency Injection

clock December 18, 2023 05:53 by author Peter

Overview
Greetings, fellow programmers! Has your.NET project ever left you entangled in the complex web of dependency injection? Do not be alarmed! We've got you covered, and today we're launching the revolutionary SuperInject NuGet Library!

How does SuperInject work?
SuperInject is your reliable dependency injection sidekick, not just another NuGet package. Imagine this: simplified service and repository registration that incorporates a little bit of fun and simplicity.

How to Begin

First Step: The Installation Dance
Now let's start the celebration! Grab a terminal and give SuperInject a hug:

dotnet add package SuperInject

SuperInject loves to be invited to the party!

Step 2. Mark Your Classes, It’s Attribute Time!
Now, here comes the fun part. Mark your classes with the ServiceAttribute or RepositoryAttribute. It’s like giving your classes a VIP pass for the dependency injection club.

using SuperInject;

[Service(ServiceLifetime.Singleton)]
public class MySingletonService : ISomeInterface
{
// Implementation goes here...
}


And for repositories:
using SuperInject;

[Repository(ServiceLifetime.Transient)]
public class MyTransientRepository : ISomeInterface
{
// Implementation goes here...
}

Let’s Get SuperInjecting!

The stage is set, and the lights are on, now let’s call the shots with the SuperInject extension method. In your Startup.cs or Program.cs file, give your services and repositories a grand entrance:
// ConfigureServices method in Startup.cs
public void ConfigureServices(IServiceCollection services)
{
// Use the AddSuperInject extension method to automatically register services and repositories
services.AddSuperInject();

// Your other service registrations go here...

// And the party continues...
}


Why SuperInject?
Attribute Awesomeness: No more tedious configurations! SuperInject’s attributes make your classes stand out, like stars on the red carpet.
Extension Method Magic: Say goodbye to manual registrations. Let SuperInject handle the heavy lifting, leaving you with more time for the fun stuff.
Avoid Circular Dependency Drama: SuperInject knows how to navigate the tricky paths of circular dependencies. It’s like having a GPS for your dependency injection journey.

Wrapping Up
SuperInject isn’t just a NuGet package; it’s your accomplice in writing cleaner, more maintainable code. So, what are you waiting for? Add a dash of SuperInject to your projects, and let the dependency injection party begin!

Ready to supercharge your dependency injection game? Grab SuperInject, and let the coding festivities begin!



ASP.NET Core 8 Hosting - HostForLIFE.eu :: Beginning Your NodaTime Journey

clock December 11, 2023 06:52 by author Peter

A more complete and reliable substitute for the built-in DateTime and DateTimeOffset classes in the.NET Framework is the date and time management library NodaTime. It is intended to handle typical problems and intricacies related to changing dates and times.

Important aspects of NodaTime

  • Immutable Types: NodaTime represents dates, times, and durations using immutable types. This encourages the development of a more consistent and thread-safe programming model and aids in the prevention of accidental object change.
  • Rich number of Types: NodaTime offers a rich number of types, such as ZonedDateTime (a date and time in a particular time zone), LocalDate (a date without a time), Instant (a point on the timeline), and LocalTime (a time without a date).
  • Time Zones: NodaTime provides extensive time zone support, enabling developers to operate across time zones, carry out conversions, and manage changes in daylight saving time.
  • Duration and Period: To handle time spans and calendar discrepancies, respectively, more expressively and precisely, NodaTime provides the Duration and Period types.
  • Compatibility with.NET Platforms: NodaTime is made to function with the.NET Framework,.NET Core, and.NET 5/6, among other.NET platforms.
  • Improved Thread Safety: Reasoning about concurrent programs requiring date and time operations is made easier by the usage of immutable types.
  • NodaTime's extensibility enables developers to specify their own calendar systems and, if necessary, provide more time zone data.
  • Testing Support: NodaTime comes with features to make testing easier, like a FakeClock to manage time in unit tests.
NodaTime was developed to provide a more reliable and developer-friendly method of handling date and time in.NET programs by addressing some of the shortcomings and difficulties related to the DateTime and DateTimeOffset classes. When handling situations where exact control over time and time zones is necessary, it is quite helpful.

Noda Time aims for.NET Standard 1.3 and.NET 4.5. We don't utilize dynamic typing in the distributable libraries for optimal compatibility, although we do use it periodically in testing. Noda Time users do not require a current C# compiler, but we usually make advantage of language features as soon as they are made available in stable beta and general release. Although we make every effort to avoid adding external dependencies, using C# 7 tuples is currently not possible since System.ValueTuple would add another dependence.

How Do I Begin Using NodaTime?
1) Use the package manager console to perform the following command or install the NodaTime package/library from the Manage NuGet package. This is NodaTime's core library.
Install-Package NodaTime

2) Install the NodaTime Serialization package/library as below in the package manager console. This library is useful when serializing the NodaTime type.
Install-Package NodaTime.Serialization.JsonNet

3) Install the NodaTime Testing library for building the Unit test project.
Install-Package NodaTime.Testing

NodaTime properties
Instant

In NodaTime, Instant is a fundamental type representing an instantaneous point on the timeline. It is similar to DateTimeOffset in the .NET Framework but provides a more precise representation of time, particularly in scenarios where high precision is required.Install-Package NodaTime

2) Install the NodaTime Serialization package/library as below in the package manager console. This library is useful when serializing the NodaTime type.
Install-Package NodaTime.Serialization.JsonNet

3) Install the NodaTime Testing library for building the Unit test project.
Install-Package NodaTime.Testing

NodaTime properties
Instant

In NodaTime, Instant is a fundamental type representing an instantaneous point on the timeline. It is similar to DateTimeOffset in the .NET Framework but provides a more precise representation of time, particularly in scenarios where high precision is required.
Instant instant = SystemClock.Instance.GetCurrentInstant();
Console.WriteLine($"NodaTime Instant : {instant}");

Output. NodaTime Instant: 2023-12-08T05:22:05Z

Converting Instant type into UTC time.
Instant convertedToUtc = instant.InUtc().ToInstant();
Console.WriteLine($"NodaTime in UTC : {convertedToUtc}");

Output.
NodaTime in UTC: 2023-12-08T05:22:05Z

Getting Instant type with TimeZone specified.
Instant convertedToEastern = instant.InZone(DateTimeZoneProviders.Tzdb["America/New_York"]).ToInstant();
Console.WriteLine($"NodaTime in Zone : {convertedToEastern}");

Output. NodaTime in Zone: 2023-12-08T05:22:05Z

ZonedDateTime
'ZonedDateTime in NodaTime is a type that represents a specific date and time with an associated time zone. This is particularly useful for handling time-related information in a way that considers different time zones and daylight saving time changes.
ZonedDateTime zonedDateTime = instant.InZone(DateTimeZoneProviders.Tzdb["Europe/Berlin"]); //US/Pacific
Console.WriteLine($"NodaTime ZonedDateTime : {zonedDateTime}");


Output. NodaTime ZonedDateTime : 2023-12-08T06:22:05 Europe/Berlin (+01)

OffsetDateTime
'OffsetDateTime in NodaTime represents a date and time along with an offset from UTC (Coordinated Universal Time). This type is useful when you want to work with an absolute point in time while considering the offset from UTC.
OffsetDateTime offsetDateTime = OffsetDateTime.FromDateTimeOffset(dateTimeOffset);
Console.WriteLine($"NodaTime offsetDateTime : {offsetDateTime}");


Output. NodaTime offsetDateTime : 2023-12-08T10:52:05+05:30

LocalDateTime
'LocalDateTime in NodaTime represents a date and time without any specific time zone or offset from UTC. It's a combination of a LocalDate and a LocalTime. This type is suitable for situations where you want to work with a date and time without considering time zone-related adjustments.
LocalDateTime localDateTime = zonedDateTime.LocalDateTime;
Console.WriteLine($"NodaTime LocalDateTime : {localDateTime}");

Output. NodaTime LocalDateTime : 12/8/2023 6:22:05 AM

LocalDate
'LocalDate in NodaTime represents a date without considering any time zone or offset from UTC. It only consists of the year, month, and day components. This type is suitable for situations where you need to work with dates independently of time zones or daylight-saving time changes.
LocalDate LD = new LocalDate(1992, 05, 08);
Console.WriteLine($"LocalDate : {LD}");


Output. LocalDate : Friday, May 8, 1992

LocalTime

'LocalTime in NodaTime represents a time of day without any association with a specific time zone or offset from UTC. It captures the hour, minute, second, and fractional seconds of a given time, allowing you to work with time-related operations without considering time zone changes.
LocalTime LT = new LocalTime(8, 0, 0);
Console.WriteLine($"LocalTime : {LT}");


Output. LocalTime : 8:00:00 AM

Summary
NodaTime offers a robust and flexible solution for handling date and time in .NET applications, addressing many of the limitations and ambiguities present in the standard DateTime types.



ASP.NET Core 8 Hosting - HostForLIFE.eu :: Enhancing Code Readability with Return Templates in the View Section

clock December 4, 2023 07:00 by author Peter

The programming approach known as "code-behind" allows for a more tidy division of responsibilities by separating the HTML code and display logic. It entails putting the code in a different class file, which can make it easier to comprehend and manage.


Most people associate Microsoft web forms with Code-Behind. Please be aware that the CodeBehind framework has nothing to do with Microsoft's previous web form; rather, it is a back-end framework for.NET Core. With the Code-Behind pattern, the server-side and client-side developers carry out the development work independently of each other, fully separating the design (such as HTML) from the server-side coding portion.

The issue of conditionals and loops
Please be aware that unless the server part code is added, variables such as those between the design part code are still regarded as Code-Behind.

It is quite obvious when variables are included between html or xml codes, etc.

Variable examples between the design section
Razor syntax

<h1>@model.PageName</h1>

Standard syntax
<h1><%=model.PageName%></h1>

The @model in the previous two cases.The Code-Behind method is still in place because PageName and <%=model.PageName%> data are clearly visible in the html tags and are easily recognizable by designers or client-side developers.

This is built on the Code-Behind design, thus there won't be any issues.

However, in most cases, you should either add the server side codes in the design part or the server side codes in the design part for recurring sections like loops and conditions.

Therefore, there is no way out!

In the design part is an illustration of server-side coding.
<table>
    <thead>
        <tr>
            <th>Column1</th>
            <th>Column2</th>
            <th>Column3</th>
        </tr>
    </thead>
    <tbody>
        @foreach (var item in Model)
        {
            <tr>
                <td>@item.Column1</td>
                <td>@item.Column2</td>
                <td>@item.Column3</td>
            </tr>
        }
    </tbody>
</table>

Example of integration of the design part in the server-side codes

model.ListValue = "<ul>";

foreach(string s in List)
    model.ListValue += "<li>" + s + "</li>";

model.ListValue += "</ul>";

Using Code-Behind Compliance Templates
Microsoft's web form was one of the most well-known frameworks that ensured the separation of server-side scripts from the design department. However, this guarantee came at a high cost, with extra codes and limited designer control over the design department.

The most recent version of the CodeBehind framework includes a new recursion template feature that allows for the development of a 100% Code-Behind based design structure.

A page view's templates are segments that are linked to template variables prior to the compilation of the view section.

Both standard and razor syntax use the template. It is not possible to utilize the standard syntax template for razor syntax or the razor syntax template for standard syntax.
A basic template example using standard syntax.
<%@ Page Controller="YourProjectName.DefaultController" Model="YourProjectName.DefaultModel" %>
<!DOCTYPE html>
<html>
<head>
+   <#GlobalTags#>
    <title><%=model.PageTitle%></title>
</head>
<body>
    <%=model.BodyValue%>
</body>
</html>

+<#GlobalTags
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<meta http-equiv="Content-Type" content="text/html; charset=utf-16" />
+<meta http-equiv="content-language" content="en">
+<script type="text/javascript" src="/client/script/global.js" ></script>
+<link rel="alternate" type="application/rss+xml" title="rss feed" href="/rss/" />
+<link rel="shortcut icon" href="/favicon.ico" />
+<link rel="stylesheet" type="text/css" href="/client/style/global.css" />
+#>

The output is translated as follows in this example when the Template variable calls a Template section.
<%@ Page Controller="YourProjectName.DefaultController" Model="YourProjectName.DefaultModel" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="Content-Type" content="text/html; charset=utf-16" />
    <meta http-equiv="content-language" content="en">
    <script type="text/javascript" src="/client/script/global.js" ></script>
    <link rel="alternate" type="application/rss+xml" title="rss feed" href="/rss/" />
    <link rel="shortcut icon" href="/favicon.ico" />
    <link rel="stylesheet" type="text/css" href="/client/style/global.css" />
    <title><%=model.PageTitle%></title>
</head>
<body>
    <%=model.BodyValue%>
</body>
</html>

The aforementioned example introduced you to the idea of templates and demonstrated their basic functionality in the CodeBehind framework. However, return templates have one special feature: they are first put into the template before replacing the entire template.

Two categories of templates exist.

Template: Return to template
The template variable can be used to call either type of template.
A template definition example using Razor syntax.

+@#TemplateName{
@{
string ExampleText = "This is example text";
}
<b>Example value is : @ExampleText</b>
+}

In each template definition, the at sign and sharp (@#) characters are used first, followed by the template name, and finally the block character ({) at the conclusion. The block is closed (}) when the desired values have been added.The template variable must be written in order to call the template. The name of the template is typed after the sign and sharp (@#) letters are added at the beginning to write the template variable.Example of using a template variable to call a template.

<!DOCTYPE html>
<html>
<body>
+  @#TemplateName
</body>
</html>

Example of after pasting the template.

<!DOCTYPE html>
<html>
<body>
@{
string ExampleText = "This is example text";
}
<b>Example value is : @ExampleText</b>
</body>
</html>

Returned templates are first inserted into a variable with the same name as the template name, and then the entire template is replaced by the returned template (all three are the same name).

The at sign and sharp (@#) characters are used at the beginning of each return template definition, and then the name of the template is written. Then, the equal character (=) is added, and at the end, the block character ({) is used. Then, the desired values are added, and finally, the block is closed (}).

Example (Razor syntax)View the section before pasting the template.

In the codes above, there is a return template called Tags, which is specified with the string @#Tags= and its value is known inside the blockpPasting template auto step 1.

<div class="header">
  <a href="#default">@model.Title</a>
  <div class="header-right">
    @#Tags={<a href="@#Href">@#PageName</a>}
  </div>
</div>

@#Tags{
@foreach (PageItem page in model.PageItemList)
{
    <a href="@#Href">@#PageName</a>
}
}

@#PageName{@page.Title}
@#Href{@(((page.Path == "main")? "/" : page.Path))}


As you can see in the above codes. First, the value inside the returned template block with the name Tags is replaced in the Tags template variable inside the Tags template.

pasting template auto step 2.
<div class="header">
  <a href="#default">@model.Title</a>
  <div class="header-right">
    @foreach (PageItem page in model.PageItemList)
    {
        <a href="@#Href">@#PageName</a>
    }
  </div>
</div>

@#PageName{@page.Title}
@#Href{@(((page.Path == "main")? "/" : page.Path))}


According to the above codes, in the second step, the values of the Tags template are replaced in the place of the returned template.

pasting template auto step 3 (finally).

<div class="header">
  <a href="#default">@model.Title</a>
  <div class="header-right">
    @foreach (PageItem page in model.PageItemList)
    {
        <a href="@(((page.Path == "main")? "/" : page.Path))">@page.Title</a>
    }
  </div>
</div>


In the last step, the values of other templates are replaced in the place of template variables.

In the template placement example, if you add the template externally, you will have the following html in the design section.

View the section before pasting the template.

<div class="header">
  <a href="#default">@model.Title</a>
  <div class="header-right">
+    @#Tags={<a href="@#Href">@#PageName</a>}
  </div>
</div>


Without a return template, at best, you will have the following html in the design section.

View the section without the use of the return template.

<div class="header">
  <a href="#default">@model.Title</a>
  <div class="header-right">
+ @foreach (PageItem page in model.PageItemList)
+ {
+    <a href="@(((page.Path == "main")? "/" : page.Path))">@page.Title</a>
+ }
  </div>
</div>


Please note that this was a simple example, and the situation may be very complex.

You can also use a template for standard syntax. The following code shows the previous template example in standard syntax.

<div class="header">
  <a href="#default"><%=model.Title%></a>
  <div class="header-right">
    <#Tags=<a href="<#Href#>"><#PageName#></a>#>
  </div>
</div>

<#Tags
<% foreach (PageItem page in model.PageItemList)
{
    <#Tags#>
}
%>
#>

<#PageName <%=page.Title%>#>
<#Href <%=((page.Path == "main")? "/" : page.Path)%>#>


If the return value is placed between the standard syntax tags, the syntax will be automatically closed before the return value, and the syntax will be opened after it.
Copy template auto step finally for standard syntax.

<div class="header">
  <a href="#default"><%=model.Title%></a>
  <div class="header-right">
    <% foreach (PageItem page in model.PageItemList)
    {
        %><a href="<%=((page.Path == "main")? "/" : page.Path)%>"><%=page.Title%></a><%
    }
    %>
  </div>
</div>


Conclusion
No matter how much you try to avoid mixing server-side codes in the view section, in some cases, such as loops and conditions, you will have to use server-side codes in the view section; the presence of mixing server-side codes reduces the readability of the codes and makes the appearance of the view section ugly, and it becomes difficult to maintain the codes and also leads to complex interaction between the server-side and client-side developers in high-scale applications. Applying the return template keeps the code of the server section outside the view section. As a result, the view section will have a great appearance, and the Code-Behind pattern will be fully respected.



ASP.NET Core 8 Hosting - HostForLIFE.eu :: C# Date and Time Formatting

clock November 28, 2023 06:29 by author Peter

DateTime Fundamentals in C#
Before we go into formatting, let's go over the fundamentals of working with DateTime in C#. The DateTime structure represents dates and times and provides methods for modifying and comparing dates. DateTime can be used to get the current date and time.DateTime can now be used to denote a specific date.DateTime or Parse.ParseExact.

 

DateTime Object Formatting
When it comes to turning DateTime objects into human-readable strings, the ToString method is the major player. To produce the desired output, you can use standard format specifiers or custom format strings.
Specifiers of Standard Format

You can use the ToString function with a set of standard format specifiers provided by C#.

C# provides a set of standard format specifiers that you can use with the ToString method.

    "d": Short date pattern
    "t": Short time pattern
    "f": Full date/time pattern (short time)
    "g": General date/time pattern (short time)
    "s": Sortable date/time pattern (ISO 8601)
    "u": Universal sortable date/time pattern (UTC)

DateTime now = DateTime.Now; string shortDate = now.ToString("d"); string fullDateTime = now.ToString("f");


Custom Format Strings
For more control over the formatting, you can use custom format strings.
    "yyyy": Four-digit year
    "MM": Two-digit month
    "dd": Two-digit day
    "HH": Two-digit hour (24-hour clock)
    "mm": Two-digit minute
    "ss": Two-digit second

DateTime now = DateTime.Now; string customFormat = now.ToString("yyyy-MM-dd HH:mm:ss");

Handling Time Zones
Dealing with time zones is a common challenge in programming. You can use the DateTime methods ToUniversalTime and ToLocalTime to convert between UTC and local time.
DateTime utcNow = DateTime.UtcNow; DateTime localTime = utcNow.ToLocalTime();

Example 1. Using Standard Format Specifiers
using System;

class Program
{
    static void Main()
    {
        DateTime now = DateTime.Now;

        // Short date pattern
        string shortDate = now.ToString("d");
        Console.WriteLine("Short Date: " + shortDate);

        // Full date/time pattern (short time)
        string fullDateTime = now.ToString("f");
        Console.WriteLine("Full Date/Time: " + fullDateTime);

        // Sortable date/time pattern (ISO 8601)
        string sortableDateTime = now.ToString("s");
        Console.WriteLine("Sortable Date/Time: " + sortableDateTime);
    }
}

Output
Short Date: 11/25/2023 Full Date/Time: Sunday, November 25, 2023 3:23 PM Sortable Date/Time: 2023-11-25T15:23:45
Example 2. Using Custom Format Strings
using System;

class Program
{
    static void Main()
    {
        DateTime now = DateTime.Now;

        // Custom format: yyyy-MM-dd HH:mm:ss
        string customFormat = now.ToString("yyyy-MM-dd HH:mm:ss");
        Console.WriteLine("Custom Format: " + customFormat);

        // Custom format: ddd, MMM dd yyyy
        string customFormat2 = now.ToString("ddd, MMM dd yyyy");
        Console.WriteLine("Custom Format 2: " + customFormat2);
    }
}

Output

Custom Format: 2023-11-25 15:23:45
Custom Format 2: Sun, Nov 25 2023

Experiment with various format strings and tailor them to your specific needs and tastes. Customizing the format enables you to display dates and times in the manner that is most appropriate for your application or user interface.

Conclusion

Date and time formatting in C# is an essential skill for any developer. Understanding the subtleties of DateTime formatting is critical whether you're presenting dates in a user interface, logging events, or dealing with time-sensitive data. Experiment with alternative format specifiers, develop custom formats, and take time zone differences into account to guarantee your apps handle dates and times correctly and logically. You're well-equipped to tackle the problems of managing temporal data in C# with these skills in your toolbox. Have fun coding!



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