This is simple UI control to select the Network Interface in single/multi network device

Add nuget package and use this namespace in xaml file

xmlns:comm="clr-namespace:Communication.Wpf;assembly=Communication.Wpf"

And use it like this control

<comm:InterfaceSelector            
        InterfaceList="{Binding InterfaceList, Mode=TwoWay}"
        IsManual="{Binding IsManual, Mode=TwoWay}"
        SelectedInterface="{Binding SelectedInterface, Mode=TwoWay}" />

For Just a combo box set IsMinimalUI = True

<comm:InterfaceSelector
    IsMinimalUI="True"
    InterfaceList="{Binding InterfaceList, Mode=TwoWay}"
    IsManual="{Binding IsManual, Mode=TwoWay}"
    SelectedInterface="{Binding SelectedInterface, Mode=TwoWay}" />