Views

The Views define the appearance and layout of the UI. They typically connect with a View Model through the use of their DataContext property and display the data that it supplies. They expose the functionality provided by the View Model by connecting its commands to the UI controls that the users interact with.

In general, the basic rule of thumb is that each View has one associated View Model. This does not mean that a View cannot data bind to more than one data source or that we cannot reuse View Models. It simply means that, in general, if we have a class called SecurityView, it is more than likely that we'll also have an instance of a class named SecurityViewModel that will be set as the value of that View's DataContext property.