Checks if given reference identifies part of object identified by this reference.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 18.0.0.0 (18.2.0.0)
Since: 2018

Syntax

C#
`public bool Contains( Reference reference )`

Visual Basic
`Public Function Contains ( _ reference As Reference _ ) As Boolean`

Visual C++
`public: bool Contains( Reference^ reference )`

Returns true if given reference identifies part of object identified by this reference, false otherwise.

Remarks

Can be used to check:

If given Reference is a part of a particular Subelement identified by this Reference.
If given Reference is a part of a particular Element identified by this Reference.

The input reference can refer to a subelement or a specific geometric item from an element or subelement.

Exception	Condition
Autodesk.Revit.Exceptions ArgumentNullException	Thrown when argument is a null reference ( Nothing in Visual Basic) .