Removes from the given set the categories that are not filterable.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0)
Since: 2011

Syntax

C#
`public static ICollection<ElementId> RemoveUnfilterableCategories( ICollection<ElementId> categories )`

Visual Basic
`Public Shared Function RemoveUnfilterableCategories ( _ categories As ICollection(Of ElementId) _ ) As ICollection(Of ElementId)`

Visual C++
`public: static ICollection<ElementId^>^ RemoveUnfilterableCategories( ICollection<ElementId^>^ categories )`

categories: Type: System.Collections.Generic ICollection ElementId
The set of categories to check.

Exceptions

Exception	Condition
Autodesk.Revit.Exceptions ArgumentNullException	A non-optional argument was null