Asp.net Page内置对象之Session的使用

<%@ 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">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        账号：<asp:TextBox ID="user" runat="server"></asp:TextBox>
         <br />
        密码：<asp:TextBox ID="passwd" runat="server" TextMode="Password"></asp:TextBox>
     </div>
    <p>
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" 
            style="height: 29px" Text="登陆" />
    </p>
    </form>
</body>
</html>

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (user.Text.Trim() == "root" && passwd.Text.Trim() == "mima")
        {
            Response.Write("正确账号密码");
            Session["User"] = user.Text.Trim();
            Response.Redirect("./Hello.aspx");
        }

    }
}

Hello.aspx的后台代码（Hello.aspx是空的页面）

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class Hello : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Response.Write("欢迎" + Session["User"]);
    }
}

输入正确的账号密码后，跳转到Hello.aspx可以看到 “欢迎root”

创建Session对象方法 Session["对象名"] = value

调用直接 string str = Session["对象名"] 即可

Asp.net Page内置对象之Session的使用

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