public async Task AddOrChangeMenuBannerMapping(string menuId, string[] bannerIds) { DataTable dataTable = new DataTable("Menu_Banner_Mapping"); dataTable.Columns.Add("MenuId", typeof(string)); dataTable.Columns.Add("BannerId", typeof(string)); foreach (var bannerId in bannerIds) { DataRow dr = dataTable.NewRow(); dr["MenuId"] = menuId; dr["BannerId"] = bannerId; dataTable.Rows.Add(dataTable); } await _menuRepository.AddOrChangeMenuBannerMapping(dataTable, menuId); }