DispatcherObject.VerifyAccess Method ()
Enforces that the calling thread has access to this DispatcherObject.
Assembly: WindowsBase (in WindowsBase.dll)
Any thread can check to see whether it has access to this DispatcherObject.
The difference between CheckAccess and is that CheckAccess returns a Boolean that specifies whether the calling thread has access to this DispatcherObject and throws an exception if the calling thread does not have access to the this DispatcherObject.
Available since 3.0