Gets the key/value collection associated with this interaction. This collection implements the [!:INotifyCollectionChanged] interface.

C# | Visual Basic | Visual C++ |
IDictionary<string, Object> UserData { get; }
ReadOnly Property UserData As IDictionary(Of String, Object)
property IDictionary<String^, Object^>^ UserData { IDictionary<String^, Object^>^ get (); }

The key/value collection.