Hi Palli,

I tried making a sample application using NorthWind  but it worked on 6.4.0 without assigning a data source  so I will have to spend more time investigating.

What I did find was the designer in 6.3.7 assigns a value such as    Me.ProductID.MaxInputLength = -1 for DGV Column Headers and 6.4.0 throws -1 out as it must be 0 or more.

Cheers

Jay

Hi Palli,

I put the data member on hold and started invesigating a bigger problem which is that none of my search screens get filled.

These are screens that allow a search into the DB to fill a datagrid. The problem being the DGV never gets any data

Try
            MyTable = CreateTable()
            DataGridView.DataSource = MyTable
            SetupDatagrid()
            If txtSearchValue.Text.Trim.Length > 0 Then
                Dim dt As DataTable = GetSearchResult(Replace(Replace(SearchFields(cmbSearchFields.SelectedIndex), " ", ""), ".", ""), txtSearchValue.Text)
                If dt.Rows.Count > 0 Then
                    'fill table with search result
                    With MyTable
                        .Clear()
                        .BeginLoadData()
                        .Merge(dt)
                        .EndLoadData()
                    End With
                End If
            End If
            '6.4.0 testing
            Debug.WriteLine("Count 2 " & MyTable.TableName.ToString & "/" & MyTable.Rows.Count)
            Debug.WriteLine("Count 3 " & DataGridView.DataSource.ToString)
            Debug.WriteLine("Count 4 " & DataGridView.Rows.Count.ToString)
        Catch ex As Exception
            MessageBox.Show(ex.Message, "Database error", MessageBoxButtons.OK, MessageBoxIcon.Error)
        End Try

Looking at the debug output Count 2 and 3 are OK but Count 4 shows 0 rows

I tried DGV invalidate and update but to no avail

I am scratching my head as to what to try next

Any ideas?

Jay