สอบถามปัญหา Crystal Report Viewer แจ้งเตือนให้ Logon (C#)

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;

private ReportDocument rpt;

ReportDocument rpt = new ReportDocument();

rpt.Load(Server.MapPath("../Rpt/myReport.rpt"));

TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();
ConnectionInfo crConnectionInfo = new ConnectionInfo();
Tables CrTables;

var db = YourClass.GetDatabaseConnection();
crConnectionInfo.ServerName = db.HOST;
crConnectionInfo.DatabaseName = db.DBNAME;
crConnectionInfo.UserID = db.UID;
crConnectionInfo.Password = db.UPWD;
CrTables = rpt.Database.Tables;

foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in CrTables)
{
	crtableLogoninfo = CrTable.LogOnInfo;
	crtableLogoninfo.ConnectionInfo = crConnectionInfo;
	CrTable.ApplyLogOnInfo(crtableLogoninfo);
}

rpt.SetParameterValue("pCustomerID", strCustomerID);
rpt.RecordSelectionFormula = "Formula";
this.rptCrystal.ReportSource = rpt;

protected void Page_Load(object sender, EventArgs e)
{
        string strSql = " SELECT * FROM tbReceive ";

        System.Data.DataSet ds = new System.Data.DataSet();
        ds = DBConnection.ExecuteDataAdapter(sbSelect.ToString(), System.Data.CommandType.Text); //function execute ข้อมูล return ค่ากลับเป็น Dataset

        CrystalDecisions.CrystalReports.Engine.ReportDocument rpt = new CrystalDecisions.CrystalReports.Engine.ReportDocument();

        rpt.Load(Server.MapPath("~/Report/crReportReceive.rpt"));
        rpt.SetDataSource(ds.Tables[0]);

        CrystalDecisions.Shared.TableLogOnInfo crtableLogoninfo = new CrystalDecisions.Shared.TableLogOnInfo();
        CrystalDecisions.Shared.ConnectionInfo crConnectionInfo = new CrystalDecisions.Shared.ConnectionInfo();
        CrystalDecisions.CrystalReports.Engine.Tables CrTables;

        var builder = DBConnection.sqlBuilder(); //function ดึงข้อมูลการเชื่อมต่อของโปรแกรม
        crConnectionInfo.ServerName = builder.DataSource; //Database server or ODBC
        crConnectionInfo.DatabaseName = builder.InitialCatalog; // Database name
        crConnectionInfo.UserID = builder.UserID; // username
        crConnectionInfo.Password = builder.Password; // password
        CrTables = rpt.Database.Tables;

        foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in CrTables)
        {
            crtableLogoninfo = CrTable.LogOnInfo;
            crtableLogoninfo.ConnectionInfo = crConnectionInfo;
            CrTable.ApplyLogOnInfo(crtableLogoninfo);
        }

        rpt.SetParameterValue("pDatePeriod", "2015-02-01 - 2015-06-30");
        rpt.SetParameterValue("pCheckedBy", "Adminstrator");
        this.crReceive.ReportSource = rpt;
}

        protected override void OnUnload(EventArgs e)
        {
            base.OnUnload(e);

            try
            {
                if (rpt != null)
                {
                    rpt.Close();
                    rpt.Dispose();
                    GC.Collect();
                }

            }
            catch (Exception ex)
            {
                MessageLogClass.WriteLog(ex);
            }
        }

        protected void rptCrystal_Unload(object sender, EventArgs e)
        {
            try
            {
                if (rpt != null)
                {
                    rpt.Close();
                    rpt.Dispose();
                    GC.Collect();
                }

            }
            catch (Exception ex)
            {
                MessageLogClass.WriteLog(ex);
            }
        }