I am using Notepad++ to edit a PowerShell file and want to be able to execute that file from inside Notepad++.
How can I set that up?
See Using Notepad++ to Compile and Run Java Programs and replace "javac" with "C:Windows\system32\WindowsPowerShell\v1.0\powershell.exe" (or your path to PowerShell). (Caveat: I'm not a Notepad++ user and haven't tried this.)
That said, I'd just use PowerShell ISE (installs with PowerShell) or one of the other dedicated PowerShell IDEs instead.