Friday, April 4, 2014

PowerShell Tip #1: Loading custom assemblies

PowerShell is a great trick to have in your bag, it allows easy and flexible scripting using SharePoint objects. Whether you're automating a certain one-off(ish) task, or just debugging a certain strange behaviour, it is always the tool I resort to.

This time, I was having an issue with an Event Receiver. PowerShell came to the rescue!

Something wasn't right, even thought it should be. I wanted to isolate the issue, validate the code being used, the method being called, did what it was supposed to do. This way I could be sure it was something to do with the Event Receiver's configuration and not the code.

In order to do that, I needed to load my custom assembly and call the method in question. The assembly was deployed to the GAC.

Using PowerShell 3.0 or up, you have the Add-Type cmdlet available:

Add-Type -AssemblyName Org.Proj

More info on TechNet, here

On previous versions, the easiest way was using the following (although deprecated for many years, it seems):


To use your methods and properties, just use:


And if your methods use any SharePoint object as input or output, you can just use the objects you get from PowerShell using the SharePoint cmdlets with no problems.

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