Windows Management Instrumentation (WMI)

Conditional Execution

The script might now be bug-free, but it certainly still has its problems. Consider, for example, what would happen if a user encountering the dialog box “Please enter your age and click OK” decided to submit a nonnumeric answer such as “hibiscus.” VBScript would attempt to add 5 to “hibiscus,” causing a runtime error. Arguably, a user who types hibiscus in response to a question about his age deserves for the script to fail! However, it is the job of a good programmer to anticipate problems that could occur as a result of user interaction with a script by ensuring, for example, that arithmetic calculations are carried out only on numbers. Conditional execution makes this possible by allowing you to choose whether to execute ...