public static string GetProductByThirdCategory(int[] ThirdCategoryID, int Sub_cat_id) { try { PAWDStoreEntities context = new PAWDStoreEntities(); if (ThirdCategoryID.Count() > 0) { var result = string.Join(",", ThirdCategoryID); var all_product_third_cat_wise = context.GetAllProductThirdCategoryWise(result).ToList(); return(JsonConvert.SerializeObject(all_product_third_cat_wise)); } else { var all_products = context.GetAllProductSubCategoryWise(Sub_cat_id).ToList(); return(JsonConvert.SerializeObject(all_products)); } } catch (Exception ex) { throw ex.InnerException; } }