Creating the ViewModel class
We created new classes to mirror the relevant parts of the Visio Type Library objects, and all of the Validation API objects and collections. We prefixed these wrapper classes with
ValidationExplorer, which is the project name. The next screenshot shows the files in the
ViewModel folder in the Solution window:
When you select a folder in the Solution Explorer, then select Project, Add Class and so on, Visual Studio will automatically insert the folder name to the namespace of the class.
As the Visio objects are COM objects, you cannot bind directly to them successfully because XAML really needs to bind to dependency ...