Sets the categories admitted by this filter.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 19.0.0.0 (19.0.0.405)
Since: 2011

Syntax

C#
`public void SetCategories( ICollection<ElementId> categories )`

Visual Basic
`Public Sub SetCategories ( _ categories As ICollection(Of ElementId) _ )`

Visual C++
`public: void SetCategories( ICollection<ElementId^>^ categories )`

Remarks

Testing that an element's category is a member of this set is, essentially, the first rule of the filter.

Changing the set of categories will clear any rules that use parameters that are not applicable for the new set of categories.

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