Hander妙用

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利用javascript 去创建一个img ,通过img去取捞hander
例子：
1.创建一个hander:

<%@ WebHandler Language="C#" Class="LoggingHandler" %>

using System;
using System.Web;
using System.Collections;
using JobsDB.DB88.Helpers;

public class LoggingHandler : IHttpHandler {

    public void ProcessRequest (HttpContext context) {
        string logtype = context.Request["logtype"];
        string rid = context.Request["rid"];
        if (!string.IsNullOrEmpty(logtype))
        {
            switch (logtype.ToLower())
            {
                case "postview":
                    if (!string.IsNullOrEmpty(rid))
                    {
                        Hashtable ht = new Hashtable();
                        ht.Add("PostID", int.Parse(rid));
                        SqlHelper.Execute("IncreasePostViewCount", ht);
                    }
                    break;
            }　
        }



    }

    public bool IsReusable {
        get {
            return false;
        }
    }

}

2.创建一个img,调用这个hander.

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="LogHandlerControl.ascx.cs" Inherits="Controls_LogHandlerControl" %>

var LogHandlerElem = document.createElement("img");

LogHandlerElem.setAttribute("src", "<%=Url %>");

LogHandlerElem.setAttribute("type","jpg/image");

</script>

其中Url是那个hander的地址。