using System;

​

public class Program

{

    public static void Main()

    {

    //

    // Use implicitly typed lambda expression.

    // ... Assign it to a Func instance.

    //

    Func<int, int> func1 = x => x + 1;

    //Console.WriteLine(func1.Invoke(1));

    //

    // Use lambda expression with statement body.

    //

    Func<int, int> func2 = x => { return x + 1; };

    //Console.WriteLine(func2.Invoke(1));

    //

    // Use formal parameters with expression body.

    //

    Func<int, int> func3 = (int x) => x + 1;

    //

    // Use parameters with a statement body.

    //

    Func<int, int> func4 = (int x) => { return x + 1; };

        //

    // Use multiple parameters.

    //

    Func<int, int, int> func5 = (x, y) => x * y;

    Console.WriteLine(func5.Invoke(2, 2));

    //

    // Use no parameters in a lambda expression.

    //

    Action func6 = () => Console.WriteLine("foo");

    func6.Invoke();

    //

    // Use delegate method expression.

    //

    Func<int, int> func7 = delegate(int x) { return x + 1; };

    //

    // Use delegate expression with no parameter list.

    //

    Func<int> func8 = delegate { return 1 + 1; };

    //

    // Invoke each of the lambda expressions and delegates we created.

    // ... The methods above are executed.

    //

    Console.WriteLine(func3.Invoke(1));

    Console.WriteLine(func4.Invoke(1));

    Console.WriteLine(func7.Invoke(1));

    Console.WriteLine(func8.Invoke());

    }

}

​