Private Sub CATEGORIEDataGridView_CellEndEdit(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles CATEGORIEDataGridView.CellEndEdit
' inizio codice aggiunto        
If CATEGORIEDataGridView.Columns(e.ColumnIndex).Name.Equals("Cat_CodDGVTB") Then
' fine codice aggiunto
            Me.CATEGORIEDataGridView.CurrentCell.Value = Me.CATEGORIEDataGridView.CurrentCell.Value.ToString.ToUpper
        End If
    End Sub