The document describes creating a web configuration file called Web.config for a web application created in C#. The Web.config file contains configuration settings for compilation and runtime, as well as application settings defined for course fees and names. A Course.aspx.cs file uses the configuration settings values from Web.config to display course name and fee labels based on a dropdown selection.

1. Web Application Using c# - Nithiyapriya Pasavaraj Page 1
Web Application Using C# Lab – Creating a Web
Configuration File

2. Web Application Using c# - Nithiyapriya Pasavaraj Page 2
Web.config
<?xml version="1.0"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<system.web>
<compilation debug="false" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>
<appSettings>
<add key="csFee" value="20000"/>
<add key="CS" value="COMPUTER SCIENCE"/>
<add key="bcaFee" value="25000"/>
<add key="BCA" value="BCA"/>
</appSettings>
</configuration>
Course.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
public partial class course : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (DropDownList1.SelectedItem.Value == "COMPUTER SCIENCE")
{
Label1.Text = ConfigurationSettings.AppSettings["CS"];
Label2.Text = ConfigurationSettings.AppSettings["csFee"];
}
if (DropDownList1.SelectedItem.Value == "BCA")
{
Label1.Text = ConfigurationSettings.AppSettings["BCA"];
Label2.Text = ConfigurationSettings.AppSettings["bcaFee"];
}
Label1.Visible = true;
Label2.Visible = true;
}
}