查看ASP.NET : ViewState
1,Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>测试</title>
</head>
<body>
<form id="form1" runat="server">
<div>
显示结果：<br />
<asp:Label ID="result" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
2,Default.aspx.cs
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected override void SavePageStateToPersistenceMedium(object viewState)
{
// 调用基类的方法，完成基本操作
base.SavePageStateToPersistenceMedium(viewState);
// 获取ViewState的Base64值
LosFormatter format = new LosFormatter();
StringWriter writer = new StringWriter();
format.Serialize(writer, viewState);
string vsRaw = writer.ToString();
Response.Write("ViewState Raw: " + Server.HtmlEncode(vsRaw)); Response.Write("");
// 解析内容
byte[] buffer = Convert.FromBase64String(vsRaw);
string vsText = Encoding.ASCII.GetString(buffer);
Response.Write("ViewState Text: " + Server.HtmlEncode(vsText));
}
}
