ASP.NET防止网页刷新，密码消失

ASP.NET防止网页刷新，密码消失

   protected void Page_Load(object sender, EventArgs e)
        {
            //防止网页刷新，密码消失
            this.TextB_mima.Attributes["value"] = TextB_mima.Text;
            this.TextB_qrmima.Attributes["value"] = TextB_qrmima.Text;
        }