必需了解的：实例需要做的是Cookie对象的创建和对Cookie对象数据的读取，通过Response对象的Cookies属性创建Cookie，通过Request对象的Cookies可以读取Cookie对象的数据。
案例思路：创建并保存Cookie在TextBox里一定时间
login.aspx：
1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="login.aspx.cs" Inherits="login" %> 2 ?3 <!DOCTYPE html> 4 ?5 <html xmlns="http://www.w3.org/1999/xhtml"> 6 <head runat="server"> 7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> 8 ????<title>登录时记住用户名和密码</title> 9 </head>10 <body>11 ????<form id="form1" runat="server">12 ????<div>13 ????????用户名<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />14 ????????密 码<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br/>15 ????????<asp:CheckBox ID="CheckBox1" runat="server" />记住用户名和密码<br />16 ????????<asp:Button ID="Button1" runat="server" Text="登录" OnClick="Button1_Click" /> 17 ???????<asp:Button ID="Button2" runat="server" Text="重置" OnClick="Button2_Click1"/>18 ????</div>19 ????</form>20 </body>21 </html>
login.aspx.cs：
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using System.Web.UI; 6 using System.Web.UI.WebControls; 7 ?8 public partial class login : System.Web.UI.Page 9 {10 ????//页面加载时执行的内容 Start11 ????protected void Page_Load(object sender, EventArgs e)12 ????{13 ????????//第一次加载不满足条件，之后均满足（除Cookie到时间了），将Cookie数据输出到TextBox里14 ????????if(Request.Cookies["username"]!=null&&Request.Cookies["password"]!=null)15 ????????{16 ????????????TextBox1.Text = Request.Cookies["username"].Value.ToString();17 ????????????TextBox2.Text = Request.Cookies["password"].Value.ToString();18 ????????}19 ????}20 ????//页面加载时执行的内容 End21 ????//重置按钮的功能的实现 Start22 ????protected void Button2_Click1(object sender, EventArgs e)23 ????{24 ????????this.FindButton(this);25 ????}26 ????private void FindButton(Control c)27 ????{28 ????????if (c.Controls != null)29 ????????{30 ????????????foreach (Control x in c.Controls)31 ????????????{32 ????????????????if (x is System.Web.UI.WebControls.TextBox)33 ????????????????{34 ????????????????????((System.Web.UI.WebControls.TextBox)x).Text = "";35 ????????????????}36 ????????????????FindButton(x);37 ????????????}38 ????????}39 ????}40 ????//重置按钮的功能的实现 End41 ????//登录按钮的功能的实现 Satrt42 ????protected void Button1_Click(object sender, EventArgs e)43 ????{44 ????????if (CheckBox1.Checked)45 ????????{46 ????????????//创建Cookie对象，保存Cookie数据，设置Cookie保存时间47 ????????????Response.Cookies["username"].Value = TextBox1.Text;48 ????????????Response.Cookies["username"].Expires = DateTime.Now.AddSeconds(10);49 ????????????Response.Cookies["password"].Value = TextBox2.Text;50 ????????????Response.Cookies["password"].Expires = DateTime.Now.AddSeconds(10);51 ????????????Response.Redirect("Test.aspx");52 ????????}53 ????}54 ????//登录按钮的功能的实现 End55 }
源码文件下载：ASP.NET中登录时记住用户名和密码.zip
文章系笔者原创，转载请注明出处，感谢合作！
ASP.NET中登录时记住用户名和密码（附源码下载）--ASP.NET
原文地址：http://www.cnblogs.com/qikeyishu/p/7760896.html