public void GetCombinationSku()
        {
            int    productId     = 0;
            int    attributeId   = 0;
            int    valueId       = 0;
            int    combinationId = 0;
            string s             = this.context.Request["ProductId"];
            string s2            = this.context.Request["AttributeId"];
            string s3            = this.context.Request["ValueId"];
            string s4            = this.context.Request["CombinationId"];

            if (int.TryParse(s, out productId) && int.TryParse(s2, out attributeId) && int.TryParse(s4, out combinationId))
            {
                int.TryParse(s3, out valueId);
                StringBuilder stringBuilder  = new StringBuilder();
                DataTable     combinationSku = CombinationBuyHelper.GetCombinationSku(productId, attributeId, valueId, combinationId);
                stringBuilder.Append("[");
                if (combinationSku != null && combinationSku.Rows.Count > 0)
                {
                    for (int i = 0; i < combinationSku.Rows.Count; i++)
                    {
                        stringBuilder.Append("{");
                        stringBuilder.AppendFormat("\"SkuId\":\"{0}\",", combinationSku.Rows[i]["SkuId"]);
                        stringBuilder.AppendFormat("\"AttributeId\":\"{0}\",", combinationSku.Rows[i]["AttributeId"]);
                        stringBuilder.AppendFormat("\"ValueId\":\"{0}\",", combinationSku.Rows[i]["ValueId"]);
                        stringBuilder.AppendFormat("\"CombinationPrice\":\"{0}\",", combinationSku.Rows[i]["CombinationPrice"]);
                        stringBuilder.AppendFormat("\"SalePrice\":\"{0}\",", combinationSku.Rows[i]["SalePrice"]);
                        stringBuilder.AppendFormat("\"Stock\":\"{0}\"", combinationSku.Rows[i]["Stock"]);
                        if (i == combinationSku.Rows.Count - 1)
                        {
                            stringBuilder.Append("}");
                        }
                        else
                        {
                            stringBuilder.Append("},");
                        }
                    }
                }
                stringBuilder.Append("]");
                this.context.Response.ContentType = "text/json";
                this.context.Response.Write(stringBuilder);
            }
        }