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  • What is the problem? Have you read stackoverflow.com/questions/15087131/…? And in which class does your ObservableCollection property located? Commented Jul 2, 2014 at 19:08
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    ObservableCollection is located in the class of Main Window of WPF application which is the client of WCF service and so is the DataGrid. Commented Jul 2, 2014 at 19:13
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    I have the same issue.. For some reason the data contract class is not working with observablecollection. I changed to simple class and it worked... @user3769902 Commented Apr 11, 2015 at 10:36