C#中登录界面 中的 “记住密码” 代码怎么实现

记住密码，就是对Cookie的读写操作，你只要在页面中判断记住标记然后操作Cookie就可以了，示例代码如下：

 protected void Page_Load(object sender, EventArgs e)
        {
            HttpCookie cookies = Request.Cookies["platform"];
            //判断是否有cookie值，有的话就读取出来
            if (cookies != null && cookies.HasKeys)
            {
                tbxUserName.Text = cookies["Name"];
                //tbxPwd.Text= cookies["Pwd"];
                tbxPwd.Attributes.Add("value", cookies["Pwd"]);
                this.chkState.Checked = true;
            }
        }
        protected bool getUser()
        {
            string userName = tbxUserName.Text.Trim();//用户名
            string userPwd = FormsAuthentication.HashPasswordForStoringInConfigFile(tbxPwd.Text.Trim(), "MD5"); //MD5密码
            StringBuilder strWhere=new StringBuilder();
            strWhere.AppendFormat("auserName='{0}' and auserPassword='{1}'", userName, userPwd);
            bl.A_TUser user = new bl.A_TUser();
            DataSet ds = new DataSet();
            ds=user.GetList(strWhere.ToString());
            if (ds.Tables[0].Rows.Count>0)
            {
                if (chkState.Checked)//记录cookie值
                {
                      HttpCookie cookie = new HttpCookie("platform");
                      cookie.Values.Add("Name", tbxUserName.Text.Trim());
                      cookie.Values.Add("Pwd", tbxPwd.Text.Trim());
                      cookie.Expires = System.DateTime.Now.AddDays(7.0);
                      HttpContext.Current.Response.Cookies.Add(cookie);
                }
                //else
                //{
                //    if (Response.Cookies["platform"] != null)
                //        Response.Cookies["platform"].Expires = DateTime.Now;
                //}
                Session["userId"] = ds.Tables[0].Rows[0][0].ToString();
                Session["userName"] = ds.Tables[0].Rows[0][1].ToString();
                return true;
            }
            return false;
        }
        protected void btnLogin_Click(object sender, EventArgs e)
        {
            if (getUser())
            {
                Response.Redirect("Default.aspx");
            }
            else
            {
                MessageBox.Show(this, "用户名和密码不正确");
            }
        }

添加Cookie
protected void Button1_Click(objectsender, EventArgs e)
{
HttpCookiecookies = new HttpCookie("website");
//方法一
cookies.Values.Add("name","Jianjie1");
cookies.Values.Add("sex","1");
//方法二
cookies["name"]= "Jianjie2";
cookies["sex"]= "0";
cookies.Expires = DateTime.Now.AddMinutes(60);
Response.Cookies.Add(cookies);
} //其中"Jianjie2"和"0"是变量，此处为固定值，可以为页面中的值。例：
cookies["name"]= txtName.text.trim();
以上来源于：长沙简界科技网络有限公司-技术分享