Creating a View Model to Contain View Logic

In this section, we will discuss the concept of View Models in the ASP.NET Core MVC framework. A View Model is a data model specifically crafted for presentation purposes. It allows you to shape the data to fit the exact requirements of a specific view. It can encapsulate the data (including validation rules) and the behavior of a specific user interface component, removing view logic from the controller and ensuring a clear separation of concerns.

Video: Creating a View Model to Contain View Logic

Populating View Model with Data

After defining our View Model, the next step is to populate it with data. Here, we'll explore how to retrieve data from a database or other data source and fill our View Model. We will also discuss how to handle errors when retrieving and assigning data, and we will demonstrate how to use the View Model to transfer data from the controller to the view.

Video: Populating View Model with Data

Updating a View to Use View Model

Finally, after our View Model has been populated with data, we need to update our view to use this View Model. We will explain how to modify the view to accept a View Model object instead of a simple model object. We will then demonstrate how to access data from the View Model in the view.

Video: Updating a View to Use View Model

Key Takeaways:

• View Models in ASP.NET Core MVC are used to shape the data specifically for a view's requirements and encapsulate the data and behavior of a specific UI component.
• View Models are populated with data retrieved from a database or other data source and used to transfer data from the controller to the view.
• A view can be updated to use a View Model instead of a simple model object to enhance data presentation and manipulation.