Tiny snippet that I always forget about and have to re-create from scratch every time. Working with ASP.Net, IIS tries really hard to cache files for performance reasons. Fine in normal circumstances but for development work, it can be a frustrating behaviour if you are writing and compiling code on a local machine and yet the behaviour you are seeing in the browser isn't changing. Often its because ASP.Net is ignoring your lovely new code in favour of the version it has cached.

Start-Process "iisreset.exe" -NoNewWindow -Wait

$Path = "C:\Windows\Microsoft.NET\Framework*\v*\Temporary ASP.NET Files"
Get-ChildItem $Path -Recurse | 
Remove-Item -Recurse

Often you need to make sure that IIS isn't holding onto the contents of the temp folder before you attempt to delete them.