Storing a method as a member variable of a class

Question

I have this as one of my members of the class \'KeyEvent\':

private delegate void eventmethod();

And the constructor:

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Answer 1

the thing that you want is called "first class function" http://en.wikipedia.org/wiki/First-class_function

C#, since version 3, supports anonymous functions and lambda expressions.

So you can use Func which represents a function taking an argument of type A and returning a value of type R

from wiki

static Func MakeDerivative(Func f, double deltaX)
  {
    return (x) => (f(x + deltaX) - f(x - deltaX)) / (2 * deltaX);
  }