线程中调用Request报"请求在此上下文中不可用。"

C# code

public string DecryptionParms    {        get        {            return Request.QueryString["tosee"];  //这里报错        }    }    protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            if (CheckParms())            {                Thread thread = new Thread(Check);                thread.IsBackground = true;                thread.Start();                                Response.Write(" ");            }        }    }    protected static readonly RequestDetails objRequestDetails = new RequestDetails();    public void Check()    {        string[] parms = DecryptionParms.Split('#');        bool relParms = true;        long[] longParms = new long[3];        for (int i = 0; i < 3; i++)        {             if (string.IsNullOrEmpty(parms[i]))            {                relParms = false;                break;            }            else            {                relParms = long.TryParse(parms[i], out longParms[i]);                if (!relParms)                    break;            }        }        if (relParms)        {            objRequestDetails.Visitor = longParms[0];            objRequestDetails.VisitorPage = longParms[1];            objRequestDetails.VisitorPage = longParms[2];            objRequestDetails.ImageOutCode = string.Empty;            objRequestDetails.Behavior = 0;  //访问            try            {                lock (objRequestDetails)                {                    StatisticsManager.AddRequestDetails(objRequestDetails);                    Thread.Sleep(1000);                }                Response.Write(" ");            }            catch (SqlException se)            {                Response.Write(se.Message);            }        }    }    /// <summary>    /// 检查参数是否传递过来    /// </summary>    /// <returns></returns>    protected bool CheckParms()    {        if (string.IsNullOrEmpty(Request.QueryString["tosee"]))            return false;        else            return true;    }

[解决办法]
HttpContext.Current.Request
[解决办法]
线程里面不是Request请求，哪来的 HttpContext.Current.Request啊