public class Class {

    private Service1 service1;
    private Service2 service2;

    public MyClass (Service1 service1, Service2 service2) {
        this.service1 = service1;
        this.service2 = service2;
    }

    private int SampleMethod() {
        Console.WriteLine("doing something with service 1");
        service1.DoSomething();
        return 0;
    }

    private int SampleMethod2() {
        Console.WriteLine("doing something with service 2");
        service2.DoSomethingElse();
        return 1;
    }
}