使用PreviousPage来获取前一页页面的元素

比如从test1.aspx页面点击按钮进入test2.aspx页面，如果想在test2.aspx页面中得到test1.aspx页面中某些控件的值.

test1.aspx前台代码, 这里要注意的按钮一定要设置postbackurl="test2.aspx" 属性,不能在它的CS代码中比如用Redirect 的方法

@ Page Language="C#" AutoEventWireup="true" CodeFile="test1.aspx.cs" Inherits="Print_test1" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" >
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<head runat="server">
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<title>无标题页</title>
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</head>
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<body>
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<form id="form1" runat="server">
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<div>
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<asp:TextBox ID="TextBox1" runat="server" Text="初值:sadfasdf"></asp:TextBox>
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<asp:Button ID="Button1" runat="server" Text="Button" postbackurl="test2.aspx" /></div>
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</form>
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</body>
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</html>
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test1.aspx.cs //这个页面没写代码

using System;
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using System.Data;
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using System.Configuration;
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using System.Collections;
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using System.Web;
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using System.Web.Security;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.UI.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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public partial class Print_test1 : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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}
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}
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test2.aspx 前台代码 //这里也没写什么东东

@ Page Language="C#" AutoEventWireup="true" CodeFile="test2.aspx.cs" Inherits="Print_test2" %>
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@ PreviousPageType VirtualPath="test1.aspx" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" >
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<head runat="server">
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<title>无标题页</title>
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</head>
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<body>
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<form id="form1" runat="server">
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<div>
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</div>
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</form>
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</body>
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</html>
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test2.aspx.cs

using System;
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using System.Data;
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using System.Configuration;
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using System.Collections;
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using System.Web;
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using System.Web.Security;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.UI.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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public partial class Print_test2 : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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//Response.Write(this.PreviousPage.FindControl("TextBox1"));
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string txt = ((TextBox)this.PreviousPage.FindControl("TextBox1")).Text;
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Response.Write(txt);
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//(this.PreviousPage).test();
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}
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}
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在test2.aspx.cs 代码中使用类似((TextBox)this.PreviousPage.FindControl("TextBox1")).Text 的方法来访问前页的属性或方法.