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// Override the Exception.Message property.

public override string Message

{

get

{

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---

return string.Format("Car Error Message: {0}", messageDetails);

}

}

}

Here, the CarIsDeadException type maintains a private data member (messageDetails) that

represents data regarding the current exception, which can be set using a custom constructor.

Throwing this error from the Accelerate() method is straightforward. Simply allocate, configure,

and throw a CarIsDeadException type rather than a System.Exception (notice that in this case, we

no longer need to fill the data collection manually):