Where is INotifyCollectionChanged?
I'm trying to use MS' ObservableConcurrentDictionary sample, but I ran into a completely unexpected problem.
INotifyCollectionChanged interface is NOT found in System.Collections.Specialized namespace. The project is WinForms, and I tried targeting .NET 3.5 and 3.5 Client Profile to no avail, despite MSDN saying it's supported. There is nothing found in the assemblies that has Colections in it, so I suppose I'm not missing any references either. Google search was inconclusive, apparently I'm the only one in the whole wide world to have such a problem.
Just what the hell is wrong with this thing?
Here is a screenshot. Note how System.Collections.Specialized is marked as unused.
In .NET 3.5, INotifyCollectionChanged was compiled as part of WindowsBase.dll. Only in .NET 4.0 was it moved to the core System.dll. You'll have to add a reference to WindowsBase to access it.
However, I'm not aware of the INotifyPropertyChanged/INotifyCollectionChanged being relevant for WinForms - they're a core part of the WPF MVVM Binding experience. Are you sure they're the tool you want to use?
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