App_Code/BLL/TBSetThread.cs

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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.Threading;
namespace WebHL.BLL
{
    /// <summary>
    /// TBSetThread 的摘要说明
    /// </summary>
    public class TBSetThread
    {
        HttpContext _content;
        public TBSetThread(HttpContext content)
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
            _content = content;
        }
        public void SetUserNotOnline()
        {
            try
            {
                while (true)
                {
                    int timespan =Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["SetUserState"])*1000*10;
                    Thread cThread = Thread.CurrentThread;
                    cThread.Join(timespan);
                    _content.Application.Lock();
                    TBUserInformation user = new TBUserInformation();
                    DataTable dt = (DataTable)_content.Application["OnlineUserTable"];
                    user.SetUserNotOnline(ref dt);
                    _content.Application["OnlineUserTable"] = dt;
                    //cThread.Start();
                    _content.Application.UnLock();
                }

            }
            catch (Exception ex)
            {

            }
            finally
            {
                _content.Application.UnLock();
            }
        }
    }
}