Action Delegate using C#

This is a readymade available delegate. Action delegate also provides a method invoke to call the method.

In this demo we have created a static method Display which accepts a string input parameter. We would pass this method name to our delegate. A List of type string is defined. And Foreach method is used to iterate through the collection.

static void Display(string str)
{
    Console.WriteLine(str);
}
static void Main(string[] args)
{
    Action<string> ObjActionDel = new Action<string>(Display);
    List<string> names = new List<string>() { "India","Russia","US","Australia","New Zealand" };
    names.ForEach(x => Console.WriteLine(x));
    Console.ReadLine();
}

Output

India
Russia
US
Australia
New Zealand