public ActionResult AssignDistrictToRegion(FormCollection collection)
        {
            Region aRegion = new Region {
                RegionId = Convert.ToInt32(collection["RegionId"])
            };

            List <District> districtList = new List <District>();

            string[] tokens = collection["DistrictId"].Split(',');
            for (int i = 0; i < tokens.Length; i++)
            {
                districtList.Add(new District {
                    DistrictId = Convert.ToInt32(tokens[i])
                });
            }
            aRegion.Districts = districtList;
            int rowAffected = _iRegionManager.AssignDristrictToRegion(aRegion);
            var regions     = _iRegionManager.GetAll();

            return(View(regions));
        }