We create some true or false questions so the user can provide their answer and on a button click the solution are going to be saved to a database. Open your Visual Studio and build an empty web site, provide a suitable name (RadioButtonList_demo). In solution explorer you get your empty web site, add a web form and SQL database as in the following

For web Form:
RadioButtonList_demo (your empty website) then right-click then choose Add New Item -> internet type. Name it RadioButtonList_demo.aspx.

For SQL Server database:
RadioButtonList_demo (your empty website) then right-click then choose Add New Item -> SQL Server database. (Add the database within the App_Data_folder.) In Server explorer, click on your database (Database.mdf) then choose Tables ->Add New Table. create the table like this:

This table is for saving the data of the radio button list, I mean in this table we will get the user's answer of true and false questions. Open your RadioButtonList_demo.aspx file from Solution Explorer and start the design of you're application. Here is the code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head runat="server"> 
<title></title> 
<style type="text/css"> 
.style1 

width: 211px; 

.style2 

width: 224px; 

.style3 

width: 224px; 
font-weight: bold; 
text-decoration: underline; 

.style4 

width: 211px; 
font-weight: bold; 
text-decoration: underline; 

</style> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div> 

</div> 
<table style="width:100%;"> 
<tr> 
<td class="style4"> 
    </td> 
<td class="style3"> 
    Please Answer these Questions</td> 
<td> 
     </td> 
</tr> 
<tr> 
<td class="style1"> 
     </td> 
<td class="style2"> 
     </td> 
<td> 
     </td> 
</tr> 
<tr> 
<td class="style1"> 
    <asp:Label ID="Label7" runat="server"  
        Text="Is Earth is the only planet in the universe??"></asp:Label> 
</td> 
<td class="style2"> 
    <asp:RadioButtonList ID="RadioButtonList1" runat="server" DataTextField="ans"  
        DataValueField="ans"> 
        <asp:ListItem>True</asp:ListItem> 
        <asp:ListItem>False</asp:ListItem> 
    </asp:RadioButtonList> 
</td> 
<td> 
     </td> 
</tr> 
<tr> 
<td class="style1"> 
    <asp:Label ID="Label5" runat="server" Text="Is Moon is our Natural Satellite?"></asp:Label> 
</td> 
<td class="style2"> 
    <asp:RadioButtonList ID="RadioButtonList2" runat="server" DataTextField="ans1"  
        DataValueField="ans1"> 
        <asp:ListItem>True</asp:ListItem> 
        <asp:ListItem>False</asp:ListItem> 
    </asp:RadioButtonList> 
</td> 
<td> 
     </td> 
</tr> 
<tr> 
<td class="style1"> 
    <asp:Label ID="Label6" runat="server"  
        Text="Earth is having Rings like Saturn have ?"></asp:Label> 
</td> 
<td class="style2"> 
    <asp:RadioButtonList ID="RadioButtonList3" runat="server" DataTextField="ans2"  
        DataValueField="ans2"> 
        <asp:ListItem>True</asp:ListItem> 
        <asp:ListItem>False</asp:ListItem> 
    </asp:RadioButtonList> 
</td> 
<td> 
     </td> 
</tr> 
<tr> 
<td class="style1"> 
     </td> 
<td class="style2"> 
     </td> 
<td> 
     </td> 
</tr> 
<tr> 
<td class="style1"> 
     </td> 
<td class="style2"> 
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Submit your answer" /> 
</td> 
<td> 
    <asp:Label ID="lbmsg" runat="server"></asp:Label> 
</td> 
</tr> 
<tr> 
<td class="style1"> 
     </td> 
<td class="style2"> 
     </td> 
<td> 
     </td> 
</tr> 
</table> 
</form> 
</body> 
</html> 

And here is the output:


Finally open your RadioButtonList_demo.aspx.cs file to write the code, for making the list box like we assume. Here is the code:
using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Data; 
using System.Data.SqlClient; 
public partial class _Default : System.Web.UI.Page 

protected void Page_Load(object sender, EventArgs e) 



protected void Button1_Click(object sender, EventArgs e) 

SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True"); 
SqlCommand cmd = new SqlCommand("insert into tbl_data (ans,ans1,ans2) values (@ans,@ans1,@ans2)", con); 
cmd.Parameters.AddWithValue("ans", RadioButtonList1.SelectedItem.Text); 
cmd.Parameters.AddWithValue("ans1", RadioButtonList2.SelectedItem.Text); 
cmd.Parameters.AddWithValue("ans2", RadioButtonList3.SelectedItem.Text); 

con.Open(); 
int i = cmd.ExecuteNonQuery(); 
con.Close(); 

if (i != 0) 

lbmsg.Text = "Your Answer Submitted Succesfully"; 
lbmsg.ForeColor = System.Drawing.Color.ForestGreen; 

else 

lbmsg.Text = "Some Problem Occured"; 
lbmsg.ForeColor = System.Drawing.Color.Red;             





Output:

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