Namespace: Autodesk.Revit.UI.Selection Interface: ISelectionFilter

ISelectionFilter.AllowElement

Method

Description:
Override this pre-filter method to specify if the element should be permitted to be selected.

Remarks:

If prompting the user to select an element from a Revit Link instance, the element passed here will be the link instance, not the selected linked element. Access the linked element from Reference passed to the AllowReference() callback of ISelectionFilter.

If an exception is thrown from this method, the element will not be permitted to be selected.

Syntax

bool AllowElement(
	Element elem
)

Function AllowElement ( 
	elem As Element
) As Boolean

bool AllowElement(
	Element^ elem
)

abstract AllowElement : 
        elem : Element -> bool

Parameters

Parameter	Type	Description
elem	Element	A candidate element in selection operation.

Return Value

Type	Description
Boolean	Return true to allow the user to select this candidate element. Return false to prevent selection of this element.