In this post, I will explain you about how to create QR Code Generator with ASP.NET 5. Though there are several solutions for QR Code generation in ASP.NET 5, all of it needs referring to third party dlls. however there's a really simple alternative through that we can create a QR code generator in ASP.Net within minutes without relating any third party dlls. Let's produce a ASP.Net web application with a text box, image control and Button with the following code
<asp:TextBox runat="server" ID="txtData"></asp:TextBox> 
   <asp:Button runat="server" ID="btnClickMe" Text="Click Me" OnClick="btnClickMe_Click" /> 
<br /> 
<asp:Image runat="server" ID="ImgQrCode" Height="160" Width="160" /> 

Now, in the button click event, generate the URL for the API with the data entered in the text box and size of the image control and set it to the image control's image URL property. Write the following code:
protected void btnClickMe_Click(object sender, EventArgs e) 

   ImgQrCode.ImageUrl = "   cht=qr&chl=" + WebUtility.HtmlEncode(txtData.Text) + "&choe=UTF-8&chs=" + ImgQrCode.Height.ToString().Replace("px", "") + "x" + ImgQrCode.Width.ToString().Replace("px", ""); 

And here is the output:

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