delegate void TestDelegate(string s);

    static void M(string s)

    {

        Console.WriteLine(s);

    }

// Original delegate syntax required

        // initialization with a named method.

        TestDelegate testdelA = new TestDelegate(M);

 // C# 2.0: A delegate can be initialized with

        // inline code, called an "anonymous method." This

        // method takes a string as an input parameter.

        TestDelegate testDelB = delegate(string s) { Console.WriteLine(s); };

 // C# 3.0. A delegate can be initialized with

        // a lambda expression. The lambda also takes a string

        // as an input parameter (x). The type of x is inferred by the compiler.

        TestDelegate testDelC = (x) => { Console.WriteLine(x); };