Private Sub dgv_CellFormatting(sender As Object, 
        e As DataGridViewCellFormattingEventArgs) Handles dgv.CellFormatting
 
        If e.ColumnIndex = 0 Then
            If Not IsDBNull(e.Value) Then
                e.Value = CDate(e.Value).ToString("dd.MM.yyyy")
                e.FormattingApplied = True
            End If
        ElseIf e.columnindex = 1 Then
            If Not IsDBNull(e.Value) Then
                e.Value = CDate(e.Value).ToString("t",
                System.Globalization.CultureInfo.GetCultureInfo("DE-de"))
                e.FormattingApplied = True
            End If
        End If
    End Sub