"C # Tutorial" C # anonymous method

C # Anonymous Methods

As we have already mentioned, a delegate is used to refer to a method that has the same label as it. In other words, you can use a delegate object to invoke a method that can be referenced by a delegate.

The anonymous method (Anonymous methods) provides a technique for passing code blocks as delegate parameters. An anonymous method is a method that has no name but a principal.

In an anonymous method, you do not need to specify a return type, which is inferred from the return statement within the method body.

Syntax for writing anonymous methods

The anonymous method is declared by creating a delegate instance using the Delegate keyword. For example:

delegate void Numberchanger (int n); Numberchanger NC = delegate (int x) {    Console.WriteLine ("Anonymous Method: {0}", x);};

Code block Console.WriteLine ("Anonymous Method: {0}", x); is the body of the anonymous method.

Delegates can be called by anonymous methods, or by named methods, that is, by passing method parameters to the delegate object.

For example:

NC (10);

Instance

The following example demonstrates the concept of an anonymous method:

Using system;delegate void Numberchanger (int n); namespace delegateappl{class Testdelegate {static int num =        10;            public static void Addnum (int p) {num + = p;        Console.WriteLine ("Named Method: {0}", num);            } public static void Multnum (int q) {num *= q;        Console.WriteLine ("Named Method: {0}", num);        } public static int getnum () {return num;             } static void Main (string[] args) {//Use anonymous method to create delegate instance Numberchanger NC = delegate (int x)            {Console.WriteLine ("Anonymous Method: {0}", x);                        };            The delegate NC (10) is invoked using an anonymous method;                        Instantiating a delegate using a named method NC = new Numberchanger (addnum);            Call the delegate NC (5) using the named method;                        Instantiate a delegate using another named method NC = new Numberchanger (multnum);         Call the delegate NC (2) using the named method;   Console.readkey (); }    }}

When the above code is compiled and executed, it produces the following results:

Anonymous method:10named method:15named method:30

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