IAsyncAttachedCollectionSource::IsUpdatingHasItems Property
Visual Studio 2015
Determines whether the HasItems property is currently being updated. Because updating HasItems may be an asynchronous operation, consumers of the IAttachedCollectionSource may want to wait for this property to become false before deciding that there are no items.
Assembly: Microsoft.VisualStudio.Shell.Immutable.12.0 (in Microsoft.VisualStudio.Shell.Immutable.12.0.dll)
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