This tutorial only uses the default namespace. The System namespace contains the EventHandler.
HttpHandler is a class that implements the IHttpHandler and IHttpAsyncHandler interfaces. This section describes how to create and register HttpHandler and provides examples of a synchronous handler, an asynchronous handler, and a handler factory.
First, you need to create a classlibrary HttpHandlerDLLVB. The code as follows:
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.SessionState;
namespace HttpHandlerDLL
{
public class MyHttpHander : IHttpHandler,IReadOnlySessionState
{
public bool IsReusable
{
get { return true; }
}
public void ProcessRequest(HttpContext context)
{
context.Response.Write("<h1><b>HttpHandler Test</b></h1>");
context.Session["Test"] = "Invoke a session in HttpHandler.";
context.Response.Write(context.Session["Test"]+"<br>");
context.Response.Write("<a href='HttpHandlerCsharp.aspx'><b>return</b></a>");
}
}
}
Then create a website project and reference classlibrary HttpHandlerDLLVB.dll.
At last configure your web.config as follows.
<httpHandlers>
<add verb="*" path="ViewHttpHandler.aspx" type="HttpHandlerDLLVB.HttpHandlerDLLVB.MyHttpHandlerVB,HttpHandlerDLLVB"/>
</httpHandlers>
<a href="ViewHttpHandler.aspx">Test HttpHandler</a></p>
</div>
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
