public bool CheckDuplicateProductByName(string productName,string warehouse,string salescenter) { ProductDAL product = new ProductDAL(); try { LumexDBPlayer db = LumexDBPlayer.Start(); bool status = product.CheckDuplicateProductByName(productName,warehouse,salescenter, db); db.Stop(); return status; } catch (Exception) { throw; } finally { product = null; } }