Action Delegate in C#

Hello everyone, in this article we will talk about “Action” a readymade delegate.

Action is just another delegate that takes some parameters and doesn’t return a value. So when do you want to execute some method which doesn’t return any value then rather creating your own delegate. .Net framework provides us an Action Delegate. Please have a look on below image –

So In general Action is a delegate -

• Which is contra variant ( in parameter  will discuss this in next articles )
• Which takes 1 to 16 parameters but do not return any value.

So let’s take an example of using Action –

private static void MyActionMethod()
        {
           Action obj = new Action(MyDummyMethod);
           //Synchronous way
           obj.Invoke();
           //Asynchronous way
           obj.BeginInvoke(null, null);
           Console.ReadLine();
           // You can call it as asynchronous way because this is just a delegate
        }

Cool J So we saw in this example we can invoke an action as a synchronous way as well as asynchronous way because Action is none other than a delegate.

Action using Lambda Expressions –

static Action<string> MyActionUsingLambda = str => Console.WriteLine(str);
MyActionUsingLambda("saurabh");

Action using Anonymous Functions-

Action<string> MyActionUsingAnounymous = delegate(string str)
        {
            Console.WriteLine(str);
        };
public void ActionUsingAnonymousMethod(string str)
        {
            MyActionUsingAnounymous(str);
        }

So that was all about Action in C#.

Hope you like reading the article. Please inbox me in case of any confusion you have.

Happy CodingJ

 

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