Windows PowerShell™ 2.0 Best Practices

Chapter 13. Handling Errors

• Handling Missing Parameters 462

• Limiting Choices 465

• Handling Missing Rights 474

• Handling Missing WMI Providers 477

• Incorrect Data Types 487

• Out of Bounds Errors 492

• Additional Resources 495

When it comes to handling errors in your script, you need to understand how the script will be used. The way that a script will be used is sometimes called the use case scenario, and it describes how the user will interact with the script.

If the use case scenario is simple, the user might not need to do anything more than type the name of the script inside the Windows PowerShell console. A script such as Get-Bios.ps1 can get by without much need for any error handling because there are no inputs to the script. The script is called, it ...