System.Data.DataSet.MarkModifiedRows C# (CSharp) Method

        private void MarkModifiedRows(TableChanges[] bitMatrix, DataRowState rowStates)
        {
            // for every table, every row & every relation find the modified rows and for non-deleted rows, their parents
            for (int tableIndex = 0; tableIndex < bitMatrix.Length; ++tableIndex)
            {
                DataRowCollection rows = Tables[tableIndex].Rows;
                int rowCount = rows.Count;

                for (int rowIndex = 0; rowIndex < rowCount; ++rowIndex)
                {
                    DataRow row = rows[rowIndex];
                    DataRowState rowState = row.RowState;
                    Debug.Assert(DataRowState.Added == rowState ||
                                 DataRowState.Deleted == rowState ||
                                 DataRowState.Modified == rowState ||
                                 DataRowState.Unchanged == rowState,
                                 "unexpected DataRowState");

                    // if bit not already set and row is modified
                    if ((0 != (rowStates & rowState)) && !bitMatrix[tableIndex][rowIndex])
                    {
                        bitMatrix[tableIndex][rowIndex] = true;

                        if (DataRowState.Deleted != rowState)
                        {
                            MarkRelatedRowsAsModified(bitMatrix, row);
                        }
                    }
                }
            }
        }