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// This delegate works in conjunction with the

// Car's events.

public delegate void CarEventHandler(string msg);

// This car can send these events.

public event CarEventHandler Exploded;

public event CarEventHandler AboutToBlow;

...

}

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8849CH11.qxd  10/1/07  10:43 AM  Page 363

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Sending an event to the caller is as simple as specifying the event by name as well as any

required parameters as defined by the associated delegate. To ensure that the caller has indeed reg-

istered with the event, you will want to check the event against a null value before invoking the

delegate’s method set. These things being said, here is the new iteration of the Car’s Accelerate()

method:

public void Accelerate(int delta)

{