Returns true if the collection contains a
GroupedColumn that shares the key value with the inputted parameter.
Parameters
- columnKey
- A column key value to match with a GroupedColumn's ColumnKey
Return Value
True if a
GroupedColumn object with that key is found
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2