how to return NotFound() result

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  I am trying to return NotFound() result. 

   [Route("~/api/patient/{patientId:int}/reactions/{id:int?}")]
          [ResponseType(typeof(IEnumerable<Reaction>))]
          public async Task<IHttpActionResult> GetReactionsByPatientId(int patientId, int id = 0)
          {
              return await Task.Run(() =>
              {
                  IEnumerable<Reaction> reactionsByPatient = ReactionRepo.GetReactionsByPatientId(patientId).Result;
  
                  if (reactionsByPatient == null)
                  {
                      return NotFound();
                  }
  
                  if (id != 0)
                  {
                      reactionsByPatient = reactionsByPatient.Where(I => I.Id == id);
                  }
  
                  if (reactionsByPatient == null)
                  {
                      return NotFound();
                  }
  
                  return Ok(reactionsByPatient);
              });
          }

  
  

  the error messages are

  CS0029 C# Cannot implicitly convert type to 'System.Threading.Tasks.Task'

  CS8030 C# Anonymous function converted to a void returning delegate cannot return a value

  CS1662 C# Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type

  • Moved by Wendy ZangMicrosoft contingent staff Tuesday, June 26, 2018 8:48 AM

  Monday, June 11, 2018 10:06 AM

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