c# 统计在线人数

using System;
using System.Data;
using System.Configuration;
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;
using System.Text;

/// <summary>
/// rs 的摘要说明
/// </summary>
public class rs
{

private string USERNAME;
private int OFFLINEDIFF;
private int REMOVEDIFF;

public rs(string str)
{
//直接在这里设定、或从配置文件中读取配置参数
///存放用户名的Session名
USERNAME = str;
///多少分钟不活动的用户从在线列表中删除
///u
OFFLINEDIFF = 5;
///多少秒执行一次删除不活动用户
REMOVEDIFF = 10;

if (System.Web.HttpContext.Current.Application["OnlineTalbe"] == null)
{
this.CashTableInit();
}
}

pub