FilteredElementCollector.UnionWith
Unites the set of elements passing the filter in this collector with the set of elements passing the filter in another collector.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
public FilteredElementCollector UnionWith( FilteredElementCollector other)Parameters
other FilteredElementCollector
The other collector
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
ArgumentException
The collector does not have a filter applied. Extraction or iteration of elements is not permitted without a filter.
ArgumentNullException
A non-optional argument was null
InvalidOperationException
The collector does not have a filter applied. Extraction or iteration of elements is not permitted without a filter.
Remarks
The result will be the same as using a LogicalOrFilter to connect this filter with another. If you have an active iterator to this collector it will be stopped by this call.