WebAPI and ODataController return 406 Not Acceptable

Question

Before adding OData to my project, my routes where set up like this:

       config.Routes.MapHttpRoute(
            name: \"ApiById\",
            routeTempl         


        

Answer 1

Set routePrefix to "api".

ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
builder.EntitySet("CustomerType");

config.MapODataServiceRoute(routeName: "ODataRoute", routePrefix: "api", model: builder.GetEdmModel());

Which OData version are you using? Check for correct namespaces, for OData V4 use System.Web.OData, for V3 System.Web.Http.OData. Namespaces used in controllers have to be consistent with the ones used in WebApiConfig.