C# Delegates Real World Usage [duplicate]

Answer 1

Say you have a console application that responds to different key presses:

            Action a = () => {/* Do Stuff*/};
            Action b = () => {/* Do Stuff*/};
            Action c = () => {/* Do Stuff*/};
            Action d = () => {/* Do Stuff*/};
            Action e = () => {/* Do Stuff*/};
            Action f = () => {/* Do Stuff*/};
            Action g = () => {/* Do Stuff*/};
            Action h = () => {/* Do Stuff*/};
            Action i = () => {/* Do Stuff*/};
            Action j = () => {/* Do Stuff*/};

            List actions = new List() {a,b,c,d,e,f,g,h,i,j};

            string line;

            while((line = Console.ReadKey().KeyChar) != 'q')
            {
                if(line.isBetween_0_and_9())
                {
                    actions[line.ParseInt()]();
                }
            }

You can obviously just use a bunch of Ifs but this not only easier but it's almost certainly more clear/readable.