Query string not working while using attribute routing

Question

I\'m using System.Web.Http.RouteAttribute and System.Web.Http.RoutePrefixAttribute to enable cleaner URLs for my Web API 2 application. For most of

Answer 1

I use FromUri attribute as solution

[Route("UsageAggregationDaily")]
public async Task UsageAggregationDaily([FromUri] string userId = null, [FromUri] DateTime? startDate = null, [FromUri] DateTime? endDate = null)