P

TableCellCombinedParameterData.CategoryId

Description:
Category id for this parameter

public ElementId CategoryId { get; set; }

Public Property CategoryId As ElementId
	Get
	Set

public:
property ElementId^ CategoryId {
	ElementId^ get ();
	void set (ElementId^ value);
}

member CategoryId : ElementId with get, set

ArgumentNullException

When setting this property: A non-optional argument was null