问具有不同url参数的web api调用get方法

EN

[RoutePrefix("api/items")]
public class ItemsController : ApiController
{

    public IHttpActionResult Get()
    {
        return Ok(new List<string> { "some results collection" });
    }

    [Route("names")]
    public IHttpActionResult GetByName([FromUri]string name = null)
    {
        if (string.IsNullOrWhiteSpace(name))
        {
            return BadRequest("name is empty");
        }
        return Ok("some result");
    }

    [Route("updates")]
    public IHttpActionResult GetUpdates([FromUri]string updated = null)
    {
        if (string.IsNullOrWhiteSpace(updated))
        {
            return BadRequest("updated is empty");
        }
        return Ok("some result");
    }
}