MVVM Question about default values in combo boxes

I have a combo box on a view that will have a default of "Active" when the form is loaded. Whose job is it to set the combobox to开发者_JAVA百科 "Active", the code behind in the loaded method or the View Model?

Bill

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I'd say it's the ViewModel's job. There are at least 2 approaches to do it:

• bind the SelectedItem of the combo to a property of the ViewModel, and set this property to the value you want
• obtain the default view for the collection (CollectionViewSource.GetDefaultView) and set the current item with the MoveCurrentTo method (don't forget to set IsSynchronizedWithCurrentItem to true on the ComboBox)