在Response.Write中出现NullReferenceException
本文关键字:NullReferenceException Response Write | 更新日期: 2023-09-27 18:03:06
protected void Btnlogin_Click(object sender, EventArgs e)
{
BLL.Bll Bll = new BLL.Bll();
String Result = Bll.Login(TBNomelog.Text, TBPasslog.Text);
String UserID = Bll.UserID(TBNomelog.Text);
Session ["IDutil"] = UserID;
Response.Write(Session["IDultil"].ToString());
if (Result.Equals("True"))
{
MultiView1.ActiveViewIndex = 2;
}
else
{
MultiView1.ActiveViewIndex = 1;
}
}
}
当我执行响应时,我得到"NullReferenceException被用户代码未处理"。写有什么建议吗?
您正在尝试从会话对象中读取另一个键,而不是在上面一行中写入("IDutil"不等于"IDultil)
Session ["IDutil"] = UserID;
Response.Write(Session["IDultil"].ToString()); // Session["IDultil"] will be null