How do I generate an absolute OData URL for a given entity type?

问题

I have a working OData implementation with routes setup in the typical way:

var builder = new ODataConventionModelBuilder();
builder.EntitySet<Person>("People");

configuration.Routes.MapODataRoute(routeName:"OData", routePrefix:"odata", model:builder.GetEdmModel());

I'm looking for a way to programatically generate an absolute URL for a registered entity set from outside of any OData action. For example, I want to request the OData endpoint for the Person type and get back "http://host/odata/People".

The standard URL helpers don't seem to apply since the OData routing is convention-based.

回答1:

You may want to leverage the IEdmModel instance generated by the ODataConventionModelBuilder.GetEdmModel().

IEdmModel model = builder.GetEdmModel(); // the builder is what you defined in the question.
var entitySetName = "";
foreach (var temp in model.FindEntityContainer("Container").EntitySets())
{
    if (temp.ElementType.Name == "Person")
    {
        entitySetName = temp.Name;
        break;
    }
}
return "http://host/odata/"+entitySetName;

Note: if you define more than one entity set for an entity type, the upper code only returns the first one.

来源：https://stackoverflow.com/questions/22255143/how-do-i-generate-an-absolute-odata-url-for-a-given-entity-type