Parameter Filter Utilities Get Filterable Parameters In Common Method

public static ICollection<ElementId> GetFilterableParametersInCommon(
	Document aDoc,
	ICollection<ElementId> categories
)

Public Shared Function GetFilterableParametersInCommon ( 
	aDoc As Document,
	categories As ICollection(Of ElementId)
) As ICollection(Of ElementId)

public:
static ICollection<ElementId^>^ GetFilterableParametersInCommon(
	Document^ aDoc, 
	ICollection<ElementId^>^ categories
)

static member GetFilterableParametersInCommon : 
        aDoc : Document * 
        categories : ICollection<ElementId> -> ICollection<ElementId> 

Parameters

aDoc Document

The document containing the categories and parameters to query.

categories ICollection ElementId

The categories for which to determine the common parameters.

Return Value

A filterable category in Revit has a set of filterable parameters. The filterable parameters common to a set of categories is the intersection of all these filterable parameter sets.

This set defines the set of parameters that may be used to define a rule on a ParameterFilterElement with a certain set of categories.

Reference