public void Update(Location updateThis)
 {
     try
     {
         _db.Locations.Attach(updateThis);
         _db.Refresh(RefreshMode.KeepCurrentValues, updateThis);
         _db.SubmitChanges();
     }
     catch (Exception e)
     {
         throw new Exception(e.Message);
     }
 }
 public void Update(Customer updateThis)
 {
     try
     {
         _db.Customers.Attach(updateThis);
         _db.Refresh(RefreshMode.KeepCurrentValues, updateThis);
         _db.SubmitChanges();
     }
     catch (Exception e)
     {
         throw e;
     }
 }