private void DelRec_Click(object sender, EventArgs e)
        {
            #region  除指定条件的日志信息

            if (this.CheckCookie())
            {
                string condition = "";

                condition = AdminVistLogs.DelVisitLogCondition(Request.Form["deleteMode"].ToString(), DNTRequest.GetString("visitid").ToString(), deleteNum.Text, deleteFrom.SelectedDate.ToString());
                if (condition != "")
                {
                    AdminVistLogs.DeleteLog(condition);
                    Response.Redirect("forum_adminvisitloggrid.aspx");
                }
                else
                {
                    base.RegisterStartupScript("", "<script>alert('您未选中任何选项或输入参数错误!');window.location.href='forum_adminvisitloggrid.aspx';</script>");
                }
            }

            #endregion
        }