Checks for reentrant attempts to change this collection.
Assembly: WindowsBase (in WindowsBase.dll)
If there was a call to BlockReentrancy of which the IDisposable return value has not yet been disposed of. Typically, this means when there are additional attempts to change this collection during a CollectionChanged event. However, it depends on when derived classes choose to call BlockReentrancy.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.