A quick check whether a definition already exists in the library. Checks for stored geometry objects only.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since: 2015

Syntax

C#
`public bool Contains( string id )`

Visual Basic
`Public Function Contains ( _ id As String _ ) As Boolean`

Visual C++
`public: bool Contains( String^ id )`

True if a geometry definition exists, false otherwise.

Exceptions

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