How to add an event to a UserControl in C#?

Question

I have a UserControl which contains 3 labels. I want to add an event for it, which occurs when the text of one of the labels changed.
I am using Visual Studio 2010

Answer 1

compile error, which says: "Expected class, delegate, enum, interface, or struct" on the second line it seems to have a problem with "event...

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These 2 lines need to be INSIDE the class declaration.

public delegate void TextChangedEventHandler(object sender, EventArgs e);
public event TextChangedEventHandler LabelTextChanged;