When you build the C# version of this sample, you will see the following build warning:
"The field 'NorthwindCatalog.ShoppingCartSheet.components' is never used"
You can ignore this build warning, and the sample still runs as expected. This warning is caused by the declaration of the components field of type System.ComponentModel.IContainer in the ShoppingCartSheet.Designer.cs file. This field is never used elsewhere in the sample.
This problem is planned to be fixed in a future release.