MedallionOData is a lightweight, zero-setup .NET library for creating and querying OData and OData-like services. MedallionOData is available for download as a NuGet package. For a more detailed introduction, check out my tutorial on Code Ducky.
var context = new ODataQueryContext();
var categories = context.Query(@"http://services.odata.org/v3/odata/odata.svc/Categories");
var foodCategoryId = categories.Where(c => c.Get<string>("Name") == "Food")
.Select(c => c.Get<int>("ID"))
// hits http://services.odata.org/v3/odata/odata.svc/Categories?$format=json&$filter=Name eq 'Food'&$select=ID
.Single();
Console.WriteLine(foodCategoryId); // 0
// we can also perform a more "strongly typed" query using a POCO class
class Category {
public int ID { get; set; }
public string Name { get; set; }
}
var categories2 = context.Query<Category>(@"http://services.odata.org/v3/odata/odata.svc/Categories");
var foodCategoryId2 = categories2.Where(c => c.Name == "Food")
.Select(c => c.ID)
.Single(); // 0The example uses EntityFramework and .NET MVC, but the MedallionOData library doesn't depend on either.
private static readonly ODataService service = new ODataService();
[Route("Categories")] // any form of mapping the route will do
public ActionResult Categories()
{
using (var db = new MyDbContext())
{
IQueryable<Category> query = db.Categories;
var result = service.Execute(query, HttpUtility.ParseQueryString(this.Request.Url.Query));
return this.Content(result.Results.ToString(), "application/json");
}
}