You should know that you have similar (assignment) operators for the other common operators:
x *= 8 => x = x * 8
x /= 8 => x = x / 8
x -= 8 => x = x - 8
These are the other ones: %=, &=, |=, ^=, <<=, >>=
Also use this when you have events to add an event handler to an event (or delegate):
grid.PreviewKeyDown += GridPreviewKeyDown;
The
-=
will remove an event handler from the event.
Note: Delegates perform the same way at events, so you can have multiple assignments to either a delegate or event, and when the delegate or event is executed, all assignments will be executed. (thanks to SAKryukov for reminding me to add this)
FYI: Th is is a case where it is difficult to find informatin because you cannot search for "+=". A grip on search capabilities for the Internet.