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

        internal void AddDependentColumn(DataColumn expressionColumn)
        {
            if (_dependentColumns == null)
            {
                _dependentColumns = new List<DataColumn>();
            }

            Debug.Assert(!_dependentColumns.Contains(expressionColumn), "duplicate column - expected to be unique");
            _dependentColumns.Add(expressionColumn);
            _table.AddDependentColumn(expressionColumn);
        }