Adding a CLR-based GlobalChangeSpec to Your Visual Studio Project
Use Global Change Spec (CLR) Catalog Item
You begin creating a global change whose business logic is powered by .NET code by adding a new catalog item to a catalog project in Visual Studio. Select the Global Change Spec (CLR) catalog item template to create a CLR-implemented global change operation. Doing so will add a new XML file to your project along with a CLR class file.
Tip: For an example of how to create a CLR-based global change, see Exercise: Creating a CLR Based Global Change.