aspx有"记住我"的登录

 客户端
 <form id="form1" runat="server">
     <div>
     用户名:<input type="text" name="txtName" /><br />
         密码:<input type="password" name="txtPwd" /><br />
         记住我:<input type="checkbox" name="checkMe" value="" />
         <input type="submit" value="登录" />
     </div>
       </form>

 服务器端
  public partial class CookieLogin : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e)
         {
             if (IsPostBack)
             {
                 CheckUserLogin();
             }
             else
             {
                 CheckCookieInfo();
             }
         }
         /// <summary>
         /// 对Cookie中存储的信息进行校验
         /// </summary>
         public void CheckCookieInfo()
         {
             if (Request.Cookies["cp1"] != null && Request.Cookies["cp2"] != null)
             {
                 string userName = Request.Cookies["cp1"].Value;
                 string userPwd = Request.Cookies["cp2"].Value;
                 //判断Cookie中存储的用户名是否正确.
                 if (userName == "itcast")
                 {
                     if (userPwd == Common.WebCommon.GetMd5String(Common.WebCommon.GetMd5String("")))
                     {
                         //给Session赋值.
                         Response.Redirect("Test.aspx");
                     }
                 }
                 Response.Cookies["cp1"].Expires = DateTime.Now.AddDays(-);
                 Response.Cookies["cp2"].Expires = DateTime.Now.AddDays(-);

             }
         }

         /// <summary>
         /// 判断用户名密码是否正确，用户登录
         /// </summary>
         public void CheckUserLogin()
         {
             string userName=Request.Form["txtName"];
             string userPwd=Request.Form["txtPwd"];
             if (userName == "itcast" && userPwd == "")
             {
                 //给Session赋值.
                 if (!string.IsNullOrEmpty(Request.Form["checkMe"]))//表示用户选择了复选框.只会将选中的复选框的值提交到服务端
                 {
                     HttpCookie cookie1 = new HttpCookie("cp1",userName);
                     HttpCookie cookie2 = new HttpCookie("cp2", Common.WebCommon.GetMd5String(Common.WebCommon.GetMd5String(userPwd)));
                     cookie1.Expires = DateTime.Now.AddDays();
                     cookie2.Expires = DateTime.Now.AddDays();
                     Response.Cookies.Add(cookie1);
                     Response.Cookies.Add(cookie2);
                 }
                 Response.Redirect("Test.aspx");
             }
         }
     }