using static System.Console;

public class Test {

    public static void Main() {

        var sc = new SampleClass();

        IControl ctrl = (IControl)sc;

        ISurface srfc = (ISurface)sc;

        sc.Paint();

        ctrl.Paint();

        srfc.Paint();

    }

}

​

interface IControl {

    void Paint();

}

interface ISurface  {

    void Paint();

}

class SampleClass : IControl, ISurface {

    public void Paint() => WriteLine("Paint method in SampleClass");

    void IControl.Paint() => WriteLine("IControl.Paint");

    void ISurface.Paint() => WriteLine("ISurface.Paint");

}