Creating the Data Model

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

Perform LINQ Commands in Your Code

After Entity Framework Core is set up and the FHIR provider is registered, you can execute LINQ in your code.

using System.Linq;
using MySolutionName.Models;

System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance); // Include this if you would like to use code pages not bundled in .NET Standard.
FHIRContext ents = new FHIRContext();
var PatientQuery = from Patient in ents.Patient
                   orderby Patient.[address-city]
                   select Patient;