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Home/ Questions/Q 6361111
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Editorial Team
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Editorial Team
Asked: May 24, 20262026-05-24T23:44:03+00:00 2026-05-24T23:44:03+00:00

I have C# class definition MyViewModelClass: INotifyPropertyChanged, MyAbstractBaseForVMClass It won’t compile. Gives and error

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I have C# class definition

MyViewModelClass: INotifyPropertyChanged, MyAbstractBaseForVMClass

It won’t compile. Gives and error at the start of MyAbstractBaseForVMClass literal:

Interface definition is expected.

Can I not realize an interface, and inherit from an abstract class at the same time?

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  1. Editorial Team
    Editorial Team
    2026-05-24T23:44:04+00:00Added an answer on May 24, 2026 at 11:44 pm

    No you can. Just reverse them.

    MyViewModelClass: MyAbstractBaseForVMClass, INotifyPropertyChanged
    

    Interfaces always come after classes.

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