Calling a function using a parameter in it's name

Question

Can I put all of this code in one line, like "Level + index ()" Is it possible?

I have this switch function:

switch(index)
    {
        case 1:
        Level1();
        break;
        case 2:
        Level2();
        break;
        case 3:
        Level3();
        break;
        case 4:
        Level4();
        break;
        case 5:
        Level5();
        break;
    }

as you can see, each index calls a function with the name "Level" and the index number.

Answer 1

Not like that, no. You could use delegates:

// Ideally make this a readonly field.
Action[] actions = { Level1, Level2, Level3, Level4, Level5 };
...
actions[index - 1]();

Or you could use reflection, as others have mentioned... but I'd try to avoid that if possible, especially if performance is a concern.

It does feel like an odd design though - I'd take a step back and consider whether there's a cleaner way of designing this to start with. (It's hard for us to help with that at the moment without more context.)

Answer 2

Try this:

typeof(yourClassCOntainingLevel1Method).GetMethod("Level"+index).Invoke(this,null); 

yourClassCOntainingLevel1Method is a class name where you have Level1 method

if it's in the same class as calling:

typeof(this).GetMethod("Level"+index).Invoke(this,null);