利用IRequiresSessionState,讓Handler可以取得session的值
前陣子好像有個人問我,在Handler裡如何取得Session的值....
我在網路上找到了答案..分享給大家呀....
我模擬一個實作..給大家看....
c#範例：
handler.aspx
01 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="handler.aspx.cs" Inherits="handel" %>
02
03 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
04 <html xmlns="http://www.w3.org/1999/xhtml">
05 <head id="Head1" runat="server">
06 <title>未命名頁面</title>
07 </head>
08 <body>
09 <form id="form1" runat="server">
10 <div>
11 <a href="Handler.ashx">Handler.ashx</a>
12 </div>
13 </form>
14 </body>
15 </html>
16
02
03 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
04 <html xmlns="http://www.w3.org/1999/xhtml">
05 <head id="Head1" runat="server">
06 <title>未命名頁面</title>
07 </head>
08 <body>
09 <form id="form1" runat="server">
10 <div>
11 <a href="Handler.ashx">Handler.ashx</a>
12 </div>
13 </form>
14 </body>
15 </html>
16
handler.aspx.cs
01 
using System;
02
using System.Data;
03using System.Configuration;
04using System.Collections;
05using System.Web;
06using System.Web.Security;
07using System.Web.UI;
08using System.Web.UI.WebControls;
09using System.Web.UI.WebControls.WebParts;
10
using System.Web.UI.HtmlControls;
11
12public partial class handel : System.Web.UI.Page
13{
14
protected void Page_Load(object sender, EventArgs e)
15
{
16 Session["msg"] = "hi..puma";
17
}
18}
using System;
using 02
using System.Data;03
using System.Configuration;04
using System.Collections;05
using System.Web;06
using System.Web.Security;07
using System.Web.UI;08
using System.Web.UI.WebControls;09
using System.Web.UI.WebControls.WebParts;10
using System.Web.UI.HtmlControls;11
12
public partial class handel : System.Web.UI.Page13
{14
protected void Page_Load(object sender, EventArgs e)15
{
16
Session["msg"] = "hi..puma";17
}18
}
Handler.ashx
01 <%@ WebHandler Language="C#" Class="Handler" %>
02
03 <%@ WebHandler Language="C#" Class="Handler" %>
04
05using System;
06using System.Web;
07using System.Web.SessionState;
08
09public class Handler : IHttpHandler, IRequiresSessionState
10{
11
12 public void ProcessRequest(HttpContext context)
13 {
14 //取得來自上頁的session值
15 string msg = context.Session["msg"].ToString();
16 context.Response.ContentType = "text/html";
17 context.Response.Write(msg);
18 }
19
20 public bool IsReusable
21 {
22 get
23 {
24 return false;
25 }
26 }
27
28}
<%@ WebHandler Language="C#" Class="Handler" %>02
03
<%@ WebHandler Language="C#" Class="Handler" %>04
05
using System;06
using System.Web;07
using System.Web.SessionState;08
09
public class Handler : IHttpHandler, IRequiresSessionState10
{11
12 public void ProcessRequest(HttpContext context)
13
{14
//取得來自上頁的session值15
string msg = context.Session["msg"].ToString();16
context.Response.ContentType = "text/html";17
context.Response.Write(msg);18
}19
20 public bool IsReusable
21
{22
get23
{24
return false;25
}26
}27
28
}
記得在Handler.ashx裡
using System.Web.SessionState;
與實作IRequiresSessionState