Creating the products workflow file
The Products module uses workflow for the product items. You define the workflow of the item in a .xamlx file. The products workflow file is defined in the Products sample in Sitefinity SDK. For the purpose of the tutorial, you can use the ProductsWorkflow.xamlx file to define the workflow.
The file is located in SDK\Content\Samples\asp\CSharp\Products under the Sitefinity installation folder.
When including the ProductsWorkflow.xamlx file in the project, you must set its Build Action property to Embedded Resource.