Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition

12.4. Example: Handling DivideByZeroExceptions and FormatExceptions

Let us consider a simple example of exception handling. The application in Fig. 12.2 uses exception handling to process any DivideByZeroExceptions and FormatExceptions that might arise. The application displays two TextBoxes in which the user can type integers. When the user presses Click To Divide, the program invokes event handler btnDivide_Click (lines 6–33), which obtains the user’s input, converts the input values to type Integer and divides the first number (numerator) by the second number (denominator). Assuming that the user provides integers as input and does not specify 0 as the denominator, btnDivide_Click displays the division result in lblOutput. However, if the ...