FilteredElementCollectorOfCategoryId Method

Applies an ElementCategoryFilter to the collector.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public FilteredElementCollector OfCategoryId(
	ElementId categoryId
)

Public Function OfCategoryId ( 
	categoryId As ElementId
) As FilteredElementCollector

public:
FilteredElementCollector^ OfCategoryId(
	ElementId^ categoryId
)

member OfCategoryId : 
        categoryId : ElementId -> FilteredElementCollector

Parameters

categoryId ElementId: The category id.

Return Value

FilteredElementCollector
A handle to this collector. This is the same collector that has just been modified, returned so you can chain multiple calls together in one line.

Exceptions

Exception	Condition
ArgumentNullException	A non-optional argument was null

Remarks

Only elements of this category id will pass the collector. If you have an active iterator to this collector it will be stopped by this call.

Reference

FilteredElementCollector Class

Autodesk.Revit.DB Namespace