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BOOK: Beginning Visual Basic 2005 ISBN: 978-0-7645-7401-6
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Old February 2nd, 2008, 10:31 PM
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Default Errata Entry Question

In the Errata there is a posting for pages 76 & 77 Error in Code that states, "Last line should be MessageBox.Show(dblArea.ToString, "Area").

dblArea is declared as Double. Why is it necessary to convert it to a string? The program runs with, or without, the addition of "ToString".

Is there ever a time when one would want to convert a Double to a String? If so, when?


Old February 4th, 2008, 07:26 AM
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In Visual Basic 2005 it is not necessary to convert the value contained in dblArea to a string to display it in a message box unless you have Option Strict turned on. The Show method of the MessageBox class expects a string value to display thus we have included the ToString method to convert the double value to a string.

I hope this clears this up for you.


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