System.Data.DataColumn.IsNotAllowDBNullViolated C# (CSharp) Method

        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);
        }