Mastering Windows PowerShell Scripting

Error and exception handling – Try/Catch

One of the more popular error and exception handling techniques is leveraging Try/Catch methodology. The Try/Catch block is used for handling terminating errors and has a very simple structure. You first use the Try { } section of code and then use Catch { } to catch any errors and perform actions based on the errors. In the instance that you catch an error, you can access the exception object by declaring $_. The $_ refers to what is in the current pipeline. Since an error occurred during the Try sequence, the data in the pipeline is the actual error information.

To use the Try/Catch block, do the following action:

Try {
    1+ "abcd"
}
Catch {
  Write-host "Error Processing the Command: $_"
}
Write-host "" ...