asp.net 如何做退出模块
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class mycontroller_Head1 : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (Session["userlogin"] != null)
{
Label1.Text = Session["userlogin"].ToString() + "您好,欢迎您进入樱花书店!";
lbtnOut.Visible = true;
}
else
{
Label1.Text = "您好,欢迎您进入樱花书店!请您登录!";
lbtnOut.Visible = false;
}
}
//lbtnOut是退出按钮
protected void lbtnOut_Click(object sender, EventArgs e)
{
Session["userlogin"] = null;
}
}
现在只有单击两次按钮才可以退出,
怎么让他单击一次按钮就可以退出。