aspx页面记住密码

界面

点击登录按钮的代码

protected void btnLogin_Click(object sender, EventArgs e)
{
if (remember_long.Checked)
{
HttpCookie cookie = new HttpCookie("USER_COOKIE");
cookie.Values.Add("UserName", this.username.Value.Trim());
cookie.Expires = System.DateTime.Now.AddDays(7.0);
HttpContext.Current.Response.Cookies.Add(cookie);
}
else if (remember_long.Checked==false)
{
Response.Cookies["USER_COOKIE"].Expires = DateTime.Now;
}
Response.Redirect("ok.aspx");
}

load事件里代码，提交表单

protected void Page_Load(object sender, EventArgs e)
        {
         if (!IsPostBack)
        {
            //读取保存的Cookie信息
            HttpCookie cookies = Request.Cookies["USER_COOKIE"];
            if (cookies != null)
            {
                //如果Cookie不为空，则将Cookie里面的用户名和密码读取出来赋值给前台的文本框。
                this.username.Value = cookies["UserName"];
                this.remember_long.Checked = true;
            }
        }
        }

如果是密码框，使用上面的方法不能给密码框赋值，需要注意两点

1、密码框使用服务器端控件

2、赋值代码区别：this.password.Attributes["value"]= cookies["Pwd"];

不是this.password.Value = cookies["Pwd"];