public static bool AddPromotionCodeToCart(string promotionCode) { try { var cartManager = new CartManager(ShopName); var userid = GetCurrentUserId(); if (!string.IsNullOrEmpty(userid)) { var result = cartManager.AddPromotionCodeToCart(userid, promotionCode); return(result); } } catch (Exception ex) { Sitecore.Diagnostics.Log.Error("AddPromotionCodeToCart failed: ", ex, ""); } return(false); }