Label2.Text = "密 码:"······.Value;报错

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = "用户名:" + Request.Cookies["UserName"].Value;
Label2.Text = "密 码:" + Request.Cookies["UserPwd"].Value;
}
}

执行后用户名无法正常显示

用户名:鏉庡洓
密 码:123456

要判断是否为null才能调用Value属性

 if(Request.Cookies["UserName"]!=null)Label1.Text = "用户名:" + Request.Cookies["UserName"].Value;
if(Request.Cookies["UserPwd"]!=null)Label2.Text = "密 码:" + Request.Cookies["UserPwd"].Value;

Label1.Text = "用户名:" + Request.Cookies["UserName"].Value;
未将对象引用设置到对象的实例。

Request.Cookies["UserName"] 值是不是传进去了