Anonymous function

 class Program  
   {  
     static void Main(string[] args)  
     {  
       Func<int, int> func1 = x => x + 1;  
       Func<int, int> func2 = x => { return x + 1; };  
       Func<int, int> func3 = (int x) => x + 1;  
       Func<int, int> func4 = (int x) => { return x + 1; };  
       Func<int, int, int> func5 = (x, y) => x * y;  
       Action func6 = () => Console.WriteLine();  
       Func<int, int> func7 = delegate (int x) { return x + 1; };  
       Func<int> func8 = delegate { return 1 + 1; };  
       Console.WriteLine(func1.Invoke(1));  
       Console.WriteLine(func2.Invoke(1));  
       Console.WriteLine(func3.Invoke(1));  
       Console.WriteLine(func4.Invoke(1));  
       Console.WriteLine(func5.Invoke(2, 2));  
       func6.Invoke();  
       Console.WriteLine(func7.Invoke(1));  
       Console.WriteLine(func8.Invoke());  
       Console.ReadLine();  
     }