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hi in the previous video we created this login user interface in wpf now we will do the user authentication with c-sharp sql server and implement the mvvm pattern as i already mentioned in previous videos wpf better fits and takes full advantage of the mvvm pattern introducing quickly the mvvm pattern is made up of three components the model the view and the view model the model represents the domain objects that encapsulate data implement business logic services and data access at least generally speaking since these tasks are divided into layers such as the domain services and data access layer therefore the model would only represent the business entities and belongs to the domain layer while the view and the view model are part of the presentation layer however the layering depends on application complexity the view model provides the data and functionality for the view that is it exposes the data to the view and provides commands to control user interaction so this component will
