{filelink=17485}

    using System;
    using System.Collections;

    public class ContrainteParametre
    {
        public static void Main()
        {
           X obj=new X();
        }
    }

    public class Z
    {
        public void MethodA()
        {
            Console.WriteLine("Y::MethodA");
        }
    }

    public class Y: Z
    {
    }

    public class X where T1:T2
    {
        public void MethodB(T1 arg)
        {

        }
    }