RegisterODataMethod.cs

public static class WebApiConfig
{
  public static void Register(HttpConfiguration config)
  {
    config.Routes.MapHttpRoute(
      name: "DefaultApi",
      routeTemplate: "api/{controller}/{id}",
      defaults: new { id = RouteParameter.Optional }
    );
  
    config.EnableQuerySupport();
  
    var modelBuilder = new ODataConventionModelBuilder();
    modelBuilder.EntitySet<DataSalesForExcel>("DataSalesForExcel");
  
    var model = modelBuilder.GetEdmModel();
    config.Routes.MapODataRoute("ODataRoute", "odata", model);
  }
}