It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari
I have 开发者_StackOverflowa strange \"problem\". Could someone explain me why : If I have in an ObservableCollection, twice (or more time) an item with the same value, then the selections of those v
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