public async Task <ActionResult <RegionAdd> > AddRegionInfo([FromBody] RegionAdd regionToAdd) { var regModel = _mapper.Map <Region>(regionToAdd); var temp = await _service.QueryRegionName(regionToAdd.Name); List <Region> duplicate = null; var rName = regionToAdd.Name.ToUpper(); if (temp.Any()) { foreach (var item in temp) { if (item.Name.ToUpper() == rName) { duplicate.Add(item); } } } if (duplicate == null) { try { _service.AddNewRegion(regModel); _service.SaveChanges(); } catch (Exception) { return(BadRequest("Duplicate RegionCode detected.")); } var regReadDto = _mapper.Map <RegionView>(regModel); return(CreatedAtRoute( "SearchByRegCode", new { regionCode = regReadDto.RegionCode }, regReadDto )); } else { return(BadRequest($"{regionToAdd.Name} already exists.")); } }