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  #1 (permalink)  
Old July 7th, 2007, 12:36 PM
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Default Need help understanding validation

I can't seem to get this validation routine to work.
Can anyone give me some clues? I thought I was following the proper sequence of events, but I have apparently left something out.

Code:
    Private strCellESN As String
    Private intNetworkID As Integer
    Private Sub dgvRMA_SetDefaultValues(ByVal sender As System.Object, _
        ByVal e As DataGridViewRowEventArgs) Handles dgvRMA.DefaultValuesNeeded

        With e.Row
            'default values for new Equipment row
            .Cells(0).Value = 0                             'ESN
            .Cells(1).Value = cmbCarrier.SelectedValue      'Carrier
            .Cells(2).Value = cmbPhone.SelectedValue        'Phone
            .Cells(3).Value = cmbColor.SelectedValue        'Color
            .Cells(4).Value = cmbLocation.SelectedValue     'Location
            .Cells(5).Value = cmbStatus.SelectedValue       'Status
            .Cells(6).Value = txtDebitMemoID.Text           'DebitMemo
            .Cells(7).Value = ""                            'Invoice Nbr
            .Cells(8).Value = 0                             'RMA Cost
            .Cells(9).Value = My.User.Name                  'user_insert
            .Cells(10).Value = Now()                        'date_insert
            .Cells(11).Value = My.User.Name                 'user_update
            .Cells(12).Value = Now()                        'date_update
            .Cells(13).Value = cmbVendor.SelectedValue      'Customer
        End With
    End Sub
    Private Sub dgvRMA_CellValidating( _
        ByVal sender As Object, _
        ByVal e As System.Windows.Forms. _
        DataGridViewCellValidatingEventArgs) _
        Handles dgvRMA.CellValidating

        Dim blnValidESN As Boolean

        'validate ESN
        If e.ColumnIndex = 0 Then
            blnValidESN = _
                EquipmentNumberValidation(e.ColumnIndex.ToString(), cmbCarrier.SelectedValue)
            If Not blnValidESN Then
                e.Cancel = True
            End If
        End If

    End Sub
    Private Sub dgvRMA_CellEndEdit(ByVal sender As Object, _
        ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
        Handles dgvRMA.CellEndEdit

        'clear the error message
        dgvRMA.Rows(e.RowIndex).ErrorText = Nothing

    End Sub
        Private Function GetNetworkType(ByRef intCarrierID As Integer) As Integer
        Me.Cursor = Cursors.WaitCursor

        ' connect to SQL Server
        Dim strConn As New SqlConnection(APC_WirelessConnectionString)
        strConn.Open()

        Dim strSQL As New SqlClient.SqlCommand( _
            "SELECT NetworkID from Carrier " & _
            "   WHERE CarrierID = " & cmbCarrier.SelectedValue & _
            ";", strConn)

        Dim sqlResults As SqlClient.SqlDataReader = strSQL.ExecuteReader()
        sqlResults.Read()

        intNetworkID = sqlResults("NetworkID")

        sqlResults.Close()
        strConn.Close()

    End Function
    Private Function EquipmentNumberValidation(ByRef strCellESN As String, _
        ByVal intCarrierID As Integer) _
        As Boolean

        Dim intStrLen As Integer = Len(strCellESN)
        Dim blnNumeric As Boolean

        Select Case intNetworkID
            Case 1              'CDMA
                Select Case intStrLen
                    Case 8      'Hex
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 16))
                    Case 11     'Decimal
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 10))
                    Case 14     'Hex
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 16))
                    Case Else
                        blnNumeric = False
                End Select

            Case 4              'GSM
                Select Case intStrLen
                    Case 10     'Hex
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 16))
                    Case 15     'Decimal
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 10))
                    Case Else
                        blnNumeric = False
                End Select

            Case Else
                blnNumeric = True
        End Select

        Return blnNumeric

    End Function
The datagridview only contains one cell visible in each row, the ESN.
I am really confused by this.

Please help!

Thanks,
Karen

  #2 (permalink)  
Old July 7th, 2007, 07:15 PM
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Default

I found the problem ...

Code:
        'validate ESN
        If e.ColumnIndex = 0 Then
            strCellESN = e.FormattedValue
            If Not EquipmentNumberValidation() Then
                dgvRMA.Rows(e.RowIndex).ErrorText = "ESN did not pass validation"
                e.Cancel = True
            End If
        End If

    Private Function GetNetworkType(ByVal intCarrierID As Integer) As Integer
        Me.Cursor = Cursors.WaitCursor

        ' connect to SQL Server
        Dim strConn As New SqlConnection(APC_WirelessConnectionString)
        strConn.Open()

        Dim strSQL As New SqlClient.SqlCommand( _
            "SELECT NetworkID from Carrier " & _
            "   WHERE CarrierID = " & intCarrierID & ";", strConn)

        Dim sqlResults As SqlClient.SqlDataReader = strSQL.ExecuteReader()
        sqlResults.Read()
        If sqlResults.HasRows() Then
            intNetworkID = sqlResults.Item(0)       'NetworkID
        End If
        sqlResults.Close()
        strConn.Close()

        Return intNetworkID

    End Function
    Private Function EquipmentNumberValidation() _
        As Boolean

        Dim intStrLen As Integer = Len(strCellESN)
        Dim blnNumeric As Boolean

        intNetworkID = GetNetworkType(cmbCarrier.SelectedValue)

        Select Case intNetworkID
            Case 1              'CDMA
                Select Case intStrLen
                    Case 8      'Hex
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 16))
                    Case 11     'Decimal
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 10))
                    Case 14     'Hex
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 16))
                    Case Else
                        blnNumeric = False
                End Select

            Case 4              'GSM
                Select Case intStrLen
                    Case 10     'Hex
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 16))
                    Case 15     'Decimal
                        blnNumeric = IsNumeric(Convert.ToInt32(strCellESN, 10))
                    Case Else
                        blnNumeric = False
                End Select

            Case Else
                blnNumeric = True
        End Select

        Return blnNumeric

    End Function
I've posted the changes to my code, hopefully someone else will benefit.

Karen

 


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