private TabelleInDBView as DataView
...
 
TabelleInDBView = TestDataSet.TabelleInDB.DefaultView
 
...
if( e.RowIndex <= 0 ) Then
    return ' wir sind im Header
End If
 
If TabelleInDBView(e.RowIndex-1).RowState = DataRowState.Modified Then
    DataGridView.Rows(e.RowIndex).DefaultCellStyle.BackColor = Color.Blue
End If