internal bool IsNotAllowDBNullViolated()
{
Index index = SortIndex;
DataRow[] rows = index.GetRows(index.FindRecords(DBNull.Value));
for (int i = 0; i < rows.Length; i++)
{
string errorText = ExceptionBuilder.NotAllowDBNullViolationText(ColumnName);
rows[i].RowError = errorText;
rows[i].SetColumnError(this, errorText);
}
return (rows.Length > 0);
}