Before updating scaffolding from new db schema try creating a
For this sample we are using the default “convention over configuration” based mapping rules to define how the classes should map to/from the database.
This means that the Products property will map to a Products table, and the Categories property will map to a Categories table.
For example – in our application above our Db Context class was named “Store Context”, and so by default EF will look for a connection-string with the same name to determine the database location.
Below is the entry we’d add to our web.config file if we wanted to use an embedded SQL CE database named “Store.sdf” within our application’s \App_data folder: URL.
These two features provide a really sweet, and extremely powerful, way to work with data and build data-driven web applications.
In addition to standard scalar properties, each class has an “association” property.This will execute our Categories Controller’s Index() method – which will list all categories in our database.Currently we don’t have any: Let’s click the “Create New” link to create a new category – this will navigate to the URL, which provides us with a form to create a new category: Clicking the “Create” button will post the form to our Categories Controller and add a new Category to our database.It will support listing products: As well as creating/editing new products (and categories): We can now build this entire application (and create the database that backs it) with ASP. We’ll use the “Internet Project” template – which will provide us with a default starter template for our application.When you look at the newly created project within the Solution Explorer, you’ll see that the ASP.
Search for before updating scaffolding from new db schema try creating a:
If you don’t specify one, EF Code-First will by default create a new SQL Express database whose name matches your Db Context class name (for example: above it would create a You can alternatively explicitly specify where you want your database to live by adding a connection-string to your application’s web.config file.