IViewMetadataGroupingColumn - свойство

[CanBeNullAttribute]
string GroupingColumn { get; set; }

<CanBeNullAttribute>
Property GroupingColumn As String
	Get
	Set

[CanBeNullAttribute]
property String^ GroupingColumn {
	String^ get ();
	void set (String^ value);
}

[<CanBeNullAttribute>]
abstract GroupingColumn : string with get, set