Can I tie an anonymous function to a Timer's tick event?

Question

If a Tick-handling function will only be used in one context (i.e. always in the same function in combination with the same Timer object), why bother make it a separate function

Answer 1

You're looking for Anonymous Methods:

myTimer.Tick += delegate (object sender, EventArgs e) {
    MessageBox.Show("Hello world!");
};

You can also omit the parameters:

myTimer.Tick += delegate {
    MessageBox.Show("Hello world!");
};

In C# 3.0, you can also use a Lambda Expression:

myTimer.Tick += (sender, e) => {
    MessageBox.Show("Hello world!");
};