Overview
This is an article in a series of Sitecore how-to articles. These articles are meant to be quick guides to accomplish various tasks within Sitecore. The how-to articles have proven to be very helpful internally at One North https://www.onenorth.com. These articles assume working Sitecore knowledge. I just wanted to share the articles with the community. Hopefully you find them helpful.
How-To
Sometimes running Clean Solution in Visual Studio does not delete everything in the bin and obj directories. This can sometimes lead to reference issues if you have old binaries lingering around.
Step-by-step guide
Run this PowerShell script from the root of your solution. It will delete all bin and obj directories, ignoring the NuGet packages directory:
Get-ChildItem .\ -Include bin,obj -Recurse | Where-Object {$_.PSParentPath -NotLike "*packages*"} | ForEach-Object -Process { Remove-Item $_.fullname -Force -Recurse }