www-huanghe/test.ashx

<% @ webhandler language="C#" class="AverageHandler" %>
using System;
using System.Web;

public class AverageHandler : IHttpHandler
{
    public bool IsReusable
    { get { return true; } }

    public void ProcessRequest(HttpContext ctx)
    {
        ctx.Response.Write("hello");
    }
}