using System;

using System.Linq.Expressions;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

​

public class MyClass

{

    public static int MyFunc(int a, int b)

    {

        return a + b;

    }

}

public class Program

{

    public static void Main()

    {

        int param1 = 1;

        int param2 = 2;

        Console.WriteLine("****************** C# Equivalent Output **************************\n\n");

        Console.WriteLine(MyClass.MyFunc(param1,param2));

        Console.WriteLine("\n\n***************** Expression Tree Output **************************\n\n");

        var c1 = Expression.Constant(param1);

        var c2 = Expression.Constant(param2);

        var expr = Expression.Call(typeof(MyClass).GetMethod("MyFunc"), c1, c2);

        Func<int> func = Expression.Lambda<Func<int>>(expr).Compile();

​

        Console.WriteLine(func.Invoke());       

    }

}