How can I do to delete duplicate item in ObservableCollection
Class Customer has got string Name, string PhoneNumber
If I'm add Name = Jonh in first time - OK
In second time i'm add Name = Jonh (duplicate) <-------------------- How can I do to delete duplicate item ?
(When we're Delete duplicate Name, What happen to PhoneNumber? )
Name : PhoneNumber:
Jonh 123
Jane113
Jonh<----Delete 456