登陆时记录cookies的方法求更正

Question

类库中这么写的方法 
public void SavaPwd(bool SavaPwdChk, string UserNameTxt, string PwdTxt)
        {
            if (SavaPwdChk == true)
            {
                HttpContext.Current.Response.Cookies["UserName"].Value = UserNameTxt;
                HttpContext.Current.Response.Cookies["PwdTxt"].Value = PwdTxt;
                HttpContext.Current.Response.Cookies["UserName"].Expires = DateTime.MaxValue;
                HttpContext.Current.Response.Cookies["PwdTxt"].Expires = DateTime.MaxValue;
            }
            else
            {
                HttpContext.Current.Response.Cookies["UserName"].Expires = DateTime.MinValue;
                HttpContext.Current.Response.Cookies["PwdTxt"].Expires = DateTime.MinValue;
            }
页面这么调用的
这是在点击登陆时写的传值方法：sl.SavaPwd(SavePwdChk.Checked, UserNameTxt.Text, PwdTxt.Text);
页面调用是：
if (!IsPostBack)
        {
                        if (Request.Cookies["UserName"] != null && Request.Cookies["Pwd"] != null)
            {
                
                UserNameTxt.Text = Request.Cookies["UserName"].Value.ToString();
                PwdTxt.Attributes["value"] = Request.Cookies["Pwd"].Value.ToString();
            }
        }帮我看看是哪的错误谢了！！！！

Answer 1

类库中这么写的方法  
public void SavaPwd(bool SavaPwdChk, string UserNameTxt, string PwdTxt)
{
  HttpCookie cookieName = new HttpCookie["UserName"];
  HttpCookie cookiePwd = new HttpCookie["Pwd"];  if (SavaPwdChk == true)
  {
    cookieName.Value = UserNameTxt;
    cookieName.Expires = DateTime.Now.AddDays(1); 
    Response.AppendCookie(cookieName );    cookiePwd.Value = PwdTxt;
    cookiePwd.Expires = DateTime.Now.AddDays(1); 
    Response.AppendCookie(cookiePwd);
  }
  else
  {
    cookieName.Expires = DateTime.Now.AddDays(-1); 
    cookiePwd.Expires = DateTime.Now.AddDays(-1); 
  }
if (!IsPostBack)
{ 
    if (HttpContext.Current.Request.Cookies["UserName"].Value!= null && HttpContext.Current.Request.Cookies["Pwd"].Value!= null)
    {    
       UserNameTxt.Text = Request.Cookies["UserName"].Value.ToString();
       PwdTxt.Text = Request.Cookies["Pwd"].Value.ToString();
    }
}