why we use delegate Func

Question

why we use delegate Func there... using System; class Test { static void Main() { Func func = GetGreeting; // no parameters but returns a string Console.WriteLine(func()); Console.ReadKey(); } static string GetGreeting() { return "Hello Jitendra :)"; } }

Ramesh Maruthi · Answer

Func is just a predefined generic delegate which encapsulates a method that accepts no parameters and returns a value of type T. It's declared like: public delegate T Func (); Its value can be assigned to a named method or to an anonymous method through delegate syntax or through lambda expression syntax. All the following assignments are correct and return the same result: void Main() { Func theDelegate; // Declare a delegate that has no parameters and returns an integer value. theDelegate = NamedMethod; // Assign to a named method. theDelegate = delegate() { return 0; }; // Assign to anonymous method through delegate syntax. theDelegate = delegate { return 0; }; // It has no parameters, so round braces can be omitted. theDelegate = () => { return 0; }; // The same anonymous method through lambda expression syntax. theDelegate = () => 0; // The syntax of single return statement can be even more simpler. int result = theDelegate(); // Call the delegate and get the result. } int NamedMethod() { return 0; }

why we use delegate Func<T>

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