Create a simple Handler
using System; using System.Web; namespace MyLib { public class SimpleHandler : IHttpHandler { public bool IsReusable { get { return true; } } public void ProcessRequest(HttpContext context) { context.Response.Write("<html><head><title>SimpleHandler</title></head><body>"); context.Response.Write("<h2>The time is "); context.Response.Write(DateTime.Now.ToString()); context.Response.Write(".</h2></body></html>"); } } } BuildSimpleHandler.bat csc /target:library /reference:System.Web.dll /out:MyLib.dll SimpleHandler.cs HandlerWeb.config <configuration> <system.web> <httpHandlers> <add verb="*" path="time.xxd" type="MyLib.SimpleHandler" /> </httpHandlers> </system.web> </configuration>