Creating the Data Model

There are two approaches to creating the context and entity classes for your application. Using the Code-First Approach approach, you can fine-tune your model by writing the classes manually. Alternatively, you can use Reverse Engineering (Scaffolding) to generate these classes automatically from your PostgreSQL schema.

Perform LINQ Commands in Your Code

After EF Core is set up and the PostgreSQL provider is registered, you can begin querying your data with LINQ:

using System.Linq;
using MySolutionName.Models;

PostgreSQLContext ents = new PostgreSQLContext();
var OrdersQuery = from Orders in ents.Orders
                   orderby Orders.ShipCity
                   select Orders;