Visual Basic - Crystal Report

I want to create report with the data i have in a True DB grid.



' My True DBGrid control - is a bound grid.

gsSqlStmt = "SELECT DateReceived FROM WorkOrder WHERE DateReceived > '8/1/01' and Datereceived < '8/30/01'
gsSqlStmt = gsSqlStmt & "Group BY DateReceived"
Set rdatCust.Resultset = grdoDTI.OpenResultset(gsSqlStmt, rdOpenStatic, rdConcurReadOnly)
 tdbgrdCust.Refresh

' (I have 1 bound column and 3 unbound columns. To fill the unbound columns i am using unboundcolumnfetch event of true db grid.

Private Sub tdbgrdCust_UnboundColumnFetch(Bookmark As Variant, ByVal Col As Integer, Value As Variant)
        Dim rrsTmp As rdoResultset
        Select Case Col
            Case 1
                gsSqlStmt = "SELECT COUNT(WorkOrderID) FROM WorkOrder WHERE DateReceived = '" & tdbgrdCust.Columns("DateReceived").CellText(Bookmark) & "'"
                Set rrsTmp = grdoDTI.OpenResultset(gsSqlStmt, rdOpenStatic, rdConcurReadOnly)
                If Not rrsTmp.EOF Then
                    Value = rrsTmp.rdoColumns(0).Value
                Else
                    Value = 0
                End If
            Case 2
               ' Some code like above to get value
            Case 3
                ' Some code like above to get value
        End Select
    Exit Sub
End Sub


' Then i am calling a routine to print the report
private sub PrintReport()
     'I set the crystal report control property
   CrystalReport1.ReportSource = crptTrueDBGrid
   CrystalReport1.ReportFileName = App.Path & "\Reports\" & "GRDRPT1.rpt"
   CrystalReport1.ReportSource = crptTrueDBGrid
   CrystalReport1.Destination =1
   CrystalReport1.Action = 1
end sub
   

' When  i am doing this -
Unbound column fetch event is firing again after    CrystalReport1.Action = 1

This is giving me the error:
Error: 40027
Application-deifned or object-defined error

Can any one help me why this is happening.

Thanks .