PowerShell 7.3 - Trouble Handling Errors in Try/Catch with Invoke-Expression for Dynamic Script Execution
I'm refactoring my project and Can someone help me understand After trying multiple solutions online, I still can't figure this out. I'm running into issues with behavior handling in PowerShell 7.3 when using `Invoke-Expression` to execute dynamically constructed scripts. My intention is to catch errors that may occur during execution, but it seems like the catch block isn't being triggered as expected. Here's a simplified version of what I'm trying to achieve: ```powershell $script = 'Get-Item NonExistentFile.txt' try { Invoke-Expression $script } catch { Write-Host "An behavior occurred: $_" } ``` When I run this code, I'm expecting the catch block to execute and print the behavior message since `Get-Item` will unexpected result when trying to access a non-existent file. However, the output I get is simply nothing, and it appears that the behavior isn't being caught. I've also tried using `-ErrorAction Stop` within `Invoke-Expression`, but that didn't change the outcome. Here’s the modified code: ```powershell $script = 'Get-Item NonExistentFile.txt -ErrorAction Stop' try { Invoke-Expression $script } catch { Write-Host "Caught an exception: $_" } ``` Yet again, I see no output. To troubleshoot this, I even tested if my catch block was working by throwing a manual behavior: ```powershell try { throw "Test behavior" } catch { Write-Host "Caught: $_" } ``` This executed correctly and printed "Caught: Test behavior". Therefore, it seems like the scenario is specific to the use of `Invoke-Expression`. I am aware that using `Invoke-Expression` can lead to security concerns and performance optimization, so if there’s a better approach to dynamically execute code with proper behavior handling, I would appreciate any suggestions! Could there be an scenario with how `Invoke-Expression` interacts with the PowerShell behavior handling model, or is there another reason why my catch block isn't being hit? I'm working on a CLI tool that needs to handle this. Thanks for your help in advance! The stack includes Powershell and several other technologies.