同一账号禁止多人同时登陆

首先在Global中写如下代码:

 1 protected void Session_Start(Object sender, EventArgs e)  
 2 {  
 3  ArrayList lstName=new ArrayList();  
 4  this.Application.Add("name",lstName);  
 5  }  
 6    
 7 protected void Session_End(Object sender, EventArgs e)  
 8 {  
 9  Application.Lock();  
10  string str=Session["name"].ToString();  
11  ArrayList lstName=(ArrayList)this.Application["name"];  
12  Application.UnLock();  
13  }
View Code

然后在登陆页面写代码:

 1 string username=this.txtName.Text.Trim();  
 2  ArrayList lstName=(ArrayList)this.Application["name"];  
 3 foreach(string strname in lstName)  
 4 {  
 5  if(username.Equals(strname))  
 6  {  
 7    Response.Redirect("User_Login.aspx");  
 8  }  
 9 }  
10    
11  lstName=(ArrayList)Application["name"];  
12  lstName.Add(this.txtName.Text.Trim());  
13  this.Application.Lock();  
14  this.Application["name"]=lstName;  
15  Session["name"]=username;  
16  this.Application.UnLock();  
17  this.Response.Redirect("main.aspx");
View Code

 

posted on 2021-04-15 11:21  快乐鱼  阅读(150)  评论(0)  编辑  收藏  举报

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