Let’s pick up where we left off in the last article. We’ve been looking at adding support for -WhatIf and -Confirm to your PowerShell commands. You get these parameters for free simply by telling PowerShell you want them.

[cmdletbinding(SupportsShouldProcess)]

That’s it. Any command in your function that also supports this attribute will automatically inherit the parameter setting. I showed you this last time with -WhatIf. Coding for confirmation is a little more complicated as it involves another cmdletbinding attribute. But let’s start with something simple.

Here’s a sample function that creates a new folder. Presumably, I want to run additional commands after the folder is created with New-Item. This cmdlet recognizes SupportsShouldProcess.