--- title: Adding a model to an ASP.NET Core MVC app author: rick-anderson description: Add a model to a simple ASP.NET Core app. keywords: ASP.NET Core, ms.author: riande manager: wpickett ms.date: 03/30/2017 ms.topic: get-started-article ms.assetid: 8dc28498-00ee-4d66-b903-b593059e9f39 ms.technology: aspnet ms.prod: asp.net-core uid: tutorials/first-mvc-app/adding-model --- [!INCLUDE[adding-model](../../includes/mvc-intro/adding-model1.md)] Note: The ASP.NET Core 2.0 templates contain the *Models* folder. In Solution Explorer, right click the **MvcMovie** project > **Add** > **New Folder**. Name the folder *Models*. Right click the *Models* folder > **Add** > **Class**. Name the class **Movie** and add the following properties: [!code-csharp[Main](../../tutorials/first-mvc-app/start-mvc/sample/MvcMovie/Models/MovieNoEF.cs?name=snippet_1)] The `ID` field is required by the database for the primary key. Build the project to verify you don't have any errors. You now have a **M**odel in your **M**VC app. ## Scaffolding a controller In **Solution Explorer**, right-click the *Controllers* folder **> Add > Controller**. ![view of above step](adding-model/_static/add_controller.png) In the **Add MVC Dependencies** dialog, select **Minimal Dependencies**, and select **Add**. ![view of above step](adding-model/_static/add_depend.png) Visual Studio adds the dependencies needed to scaffold a controller, but the controller itself is not created. The next invoke of **> Add > Controller** creates the controller. In **Solution Explorer**, right-click the *Controllers* folder **> Add > Controller**. ![view of above step](adding-model/_static/add_controller.png) In the **Add Scaffold** dialog, tap **MVC Controller with views, using Entity Framework > Add**. ![Add Scaffold dialog](adding-model/_static/add_scaffold2.png) Complete the **Add Controller** dialog: * **Model class:** *Movie (MvcMovie.Models)* * **Data context class:** Select the **+** icon and add the default **MvcMovie.Models.MvcMovieContext** ![Add Data context](adding-model/_static/dc.png) * **Views:** Keep the default of each option checked * **Controller name:** Keep the default *MoviesController* * Tap **Add** ![Add Controller dialog](adding-model/_static/add_controller2.png) Visual Studio creates: * An Entity Framework Core [database context class](xref:data/ef-mvc/intro#create-the-database-context) (*Data/MvcMovieContext.cs*) * A movies controller (*Controllers/MoviesController.cs*) * Razor view files for Create, Delete, Details, Edit and Index pages (*Views/Movies/*.cshtml*) The automatic creation of the database context and [CRUD](https://en.wikipedia.org/wiki/Create,_read,_update_and_delete) (create, read, update, and delete) action methods and views is known as *scaffolding*. You'll soon have a fully functional web application that lets you manage a movie database. If you run the app and click on the **Mvc Movie** link, you'll get an error similar to the following: ``` An unhandled exception occurred while processing the request. SqlException: Cannot open database "MvcMovieContext-" requested by the login. The login failed. Login failed for user 'Rick'. System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString ``` You need to create the database, and you'll use the EF Core [Migrations](xref:data/ef-mvc/migrations) feature to do that. Migrations lets you create a database that matches your data model and update the database schema when your data model changes. ## Add EF tooling and perform initial migration In this section you'll use the Package Manager Console (PMC) to: * Add the Entity Framework Core Tools package. This package is required to add migrations and update the database. * Add an initial migration. * Update the database with the initial migration. From the **Tools** menu, select **NuGet Package Manager > Package Manager Console**. ![PMC menu](adding-model/_static/pmc.png) In the PMC, enter the following commands: ``` PMC Install-Package Microsoft.EntityFrameworkCore.Tools Add-Migration Initial Update-Database ``` Note: See the [CLI approach](#cli) if you have problems with the PMC. The `Add-Migration` command creates code to create the initial database schema. The schema is based on the model specified in the `DbContext`(In the *Data/MvcMovieContext.cs* file). The `Initial` argument is used to name the migrations. You can use any name, but by convention you choose a name that describes the migration. See [Introduction to migrations](xref:data/ef-mvc/migrations#introduction-to-migrations) for more information. The `Update-Database` command runs the `Up` method in the *Migrations/\_InitialCreate.cs* file, which creates the database. You can perform the preceeding steps using the command-line interface (CLI) rather than the PMC: * Add [EF Core tooling](xref:data/ef-mvc/migrations#entity-framework-core-nuget-packages-for-migrations) to the *.csproj* file. * Run the following commands from the console (in the project directory): ```console dotnet ef migrations add InitialCreate dotnet ef database update ``` [!INCLUDE[adding-model](../../includes/mvc-intro/adding-model3.md)] [!code-csharp[Main](../../tutorials/first-mvc-app/start-mvc/sample/MvcMovie/Startup.cs?name=ConfigureServices&highlight=6-7)] [!INCLUDE[adding-model](../../includes/mvc-intro/adding-model4.md)] ![Intellisense contextual menu on a Model item listing the available properties for ID, Price, Release Date, and Title](adding-model/_static/ints.png) ## Additional resources * [Tag Helpers](xref:mvc/views/tag-helpers/intro) * [Globalization and localization](xref:fundamentals/localization) >[!div class="step-by-step"] [Previous Adding a View](adding-view.md) [Next Working with SQL](working-with-sql.md)