using System;

public class Program

{

    public static void Main()

    {

        var test = new TestOperations<int>();

        Console.WriteLine(test.Add(1,2));

    }

}

​

    public class TestOperations<T>

    {

        public T Add(T first, T second)

        {

            var result = default(T);

​

            if (typeof(T) == typeof(int))

            {

                dynamic a = first, b = second;

​

                result = a + b;

            }

​

            return result;

​

        }

    }

​