![]() ![]() So, in a GUI application, you can’t just write output and hope for the best. The ball just falls to the ground and rolls to a stop. It’s like a pitcher throwing a baseball when there’s no catcher on the field. So, when you generate output and don’t save it to a file or a variable, the output is just lost. GUI applications, like the cool ones that you write in PowerShell Studio, don’t have a console. What happens to the output that would otherwise go to the console when there is no console? And, more importantly, how do I manage output without a console? Where is my output? ![]() If you run Write-Host or Write-Output, Out-Host or Out-String, the output strings appears in the console.Īnd even if you send the output to an alternate output stream by using Write-Warning, Write-Verbose, or Write-Error, by default, the output appears in the console.īut GUI application don’t have a console. If you format objects, such as by using Format-List or Format-Table, (string representations of) the formatted objects appear in the console. So, if you run a cmdlet that returns objects, such as the Get-Process cmdlet, (string representations of) the objects appear in the console. The process that hosts Windows PowerShell handles the standard output, almost always by writing the output to the console (host behavior might vary). PS C:> Get-Dateīehind the scenes, Windows PowerShell silently appends an Out-String command to the pipeline and sends the results to “standard output” (“stdout”). When you generate output in the Windows PowerShell console, the output appears as text strings in the console window. I constantly need to remind myself that things that “just work” in the console don’t make any sense in a GUI. PowerShell Studio forms provide a gentle and well-guided introduction to GUI applications, but it’s still taken me some time to break old habits. After many years of writing scripts for the Windows PowerShell console, I’m now learning the next level of automation - writing GUI applications that run Windows PowerShell commands. ![]()
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