How to make ObservableCollection thread-safe?

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As of .net framwork 4.5 you can use native collection synchronization.

BindingOperations.EnableCollectionSynchronization(YourCollection, YourLockObject);

YourLockObject is instance of any object e.g. new Object();. Use one per collection.

This eliminates the need of some special class or anything. Just enable and enjoy 😉

[edit]
As stated in the comments by Mark and Ed (thanks for clarifying!), this does not relieve you from locking the collection on updates as it just synchonizes the collection-view-binding and does not magically make the collection thread-safe itself.
[/edit]

PS: BindingOperations resides in Namespace System.Windows.Data.

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