How to work with OData primitives or complex types

Question

I am working with OData for the first time and have a model entity with the following properties:

public IEnumerable<string> Genres { get; set; } public IEnumerable<string> GenresFiltered { get; set; }

When I make the web call to retrieve data from the model I get the following message:

'The property 'Genres' on type 'xxxx' is not a valid property. Properties whose types are collection of primitives or complex types are not supported

Is there a way to workaround this error to display a list of strings in Odata?

take a look at this and perhaps you want to use a List<T> instead stackoverflow.com/questions/4462921/… — MethodMan
– MethodMan, Commented Aug 20, 2014 at 18:34
You may also want to check here: social.msdn.microsoft.com/Forums/en-US/… — Bin_MSFT
– Bin_MSFT, Commented Aug 21, 2014 at 2:33

QianLi · Accepted Answer · 2014-08-22 05:56:14Z

Weird. I wrote a little test web api odata service and it works. The code are as below.

WebApiConfig.cs

public static class WebApiConfig { public static void Register(HttpConfiguration config) { ODataConventionModelBuilder builder = new ODataConventionModelBuilder(); builder.EntitySet<Foo>("Foos"); config.MapODataServiceRoute("odata", "odata", builder.GetEdmModel()); } }

The model class

public class Foo { public string ID { get; set; } public IEnumerable<string> Genres { get; set; } }

The controller class

public class FoosController : ODataController { // GET odata/Foos [EnableQuery] public IHttpActionResult Get() { return Ok(FakeData.GetFoos().AsQueryable()); } }

And then I tried with http://localhost:37312/odata/Foos , the result is

{ "@odata.context": "http://localhost:37312/odata/$metadata#Foos", "value": [ { "ID": "1", "Genres": [ "aaa", "bbb" ] }, { "ID": "2", "Genres": [ "ccc" ] } ]

}

Hope this can help.

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