asp.net实现显示在线会员

asp.net中: global.asax.cs

using System; using System.Collections; using System.ComponentModel; using System.Web; using System.Web.SessionState;

namespace alumniV2 {  /// <summary>  /// Global 的摘要说明。  /// </summary>  public class Global : System.Web.HttpApplication  {   public Global()   {    InitializeComponent();   }       protected void Application_Start(Object sender, EventArgs e)   {    Application.Lock ();        Application["usernum"]=0;    Application["onlineuser"]="";       Application["guestnum"]=0;

   Application.UnLock ();   }     protected void Session_Start(Object sender, EventArgs e)   {    Application.Lock ();

   Application["guestnum"]=(Int32)Application["guestnum"]+1;

   Application.UnLock ();   }

  protected void Application_BeginRequest(Object sender, EventArgs e)   {

  }

  protected void Application_EndRequest(Object sender, EventArgs e)   {

  }

  protected void Application_AuthenticateRequest(Object sender, EventArgs e)   {

  }

  protected void Application_Error(Object sender, EventArgs e)   {

  }

  protected void Session_End(Object sender, EventArgs e)   {    Application.Lock ();    string name;    if (Request.Cookies ["personal"]!=null )    {     name=Request.Cookies ["personal"]["username"] ;     if (name!="")     {       Application["usernum"]=(Int32)Application["usernum"]-1;

      Application["onlineuser"]=(Application["onlineuser"]+"").Replace (name+"$","");

    }     else      Application["guestnum"]=(Int32)Application["guestnum"]-1;    }    else     Application["guestnum"]=(Int32)Application["guestnum"]-1;    Application.UnLock ();   }

  protected void Application_End(Object sender, EventArgs e)   {    Application.Lock ();        Application["usernum"]=0;    Application["onlineuser"]="";       Application["guestnum"]=0;

   Application.UnLock ();   }       #region Web Form Designer generated code   /// <summary>   /// 设计器支持所需的方法 - 不要使用代码编辑器修改   /// 此方法的内容。   /// </summary>   private void InitializeComponent()   {      }   #endregion  } }

index.aspx.cs

  private void ShowOnlineUser()   {    onlinenum.Text ="  当前共有 <font color=red>"+ Application["usernum"] +"</font>  个成员 <font color=red>"+ Application["guestnum"] +"</font>  个客人在线   <img src='images/user.gif'> <font color=red>成员</font>   <img src='images/guest.gif'> 客人 ";

   string oluserstr;    string []oluser;    int n;    oluserstr="";    if (Application["onlineuser"]!=null)    {     //oluser1=;     oluser=(Application["onlineuser"]+"").Split('$');     for (n=0;oluser[n]!="" && oluser[n]!=null;n++)      oluserstr=oluserstr+"  <img src='images/user.gif'> <a href='myinfo.aspx?username="+Server.UrlEncode(oluser[n])+"'><font color=red>"+oluser[n]+"</font></a> ";    }         if (Application["guestnum"]!=null)    {     for (n=0;n<(Int32)Application["guestnum"];n++)      oluserstr=oluserstr+"  <img src='images/guest.gif'> 客人 ";    }    onlineuser.Text =oluserstr;   }

转载于:https://www.cnblogs.com/Jwin/archive/2008/08/17/1269664.html

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