我是实际项目来拆出来做的案例,场景是比如我们在做电商网站时,在创建订单时的一系列操作,通常在创建订单时我们需要数据表的操作有:订单的表头(主表)、订单的详细、清空购物车、甚至是修改优惠劵的状态(在使用了优惠劵的时候),下面直接把执行事务的主方法直接贴出来:
public static bool CreateUserOrder(UserOrder model, string Ids) { List<string> SQLStringList = new List<string>(); List<DbParameter[]> Parameters = new List<DbParameter[]>(); StringBuilder strSql = new StringBuilder(); //添加OrderInfor SqlParameter[] parameters1 = OrderInforDAL.BuildOrderInforAddParameter(model.UserId, model.OrderCode, Ids, ref strSql); SQLStringList.Add(strSql.ToString()); Parameters.Add(parameters1); //添加UserOrder SqlParameter[] parameters2 = BuildUserOrderAddParameter(model, ref strSql); SQLStringList.Add(strSql.ToString()); Parameters.Add(parameters2); //清空购物车 SqlParameter[] parameters3 = BasketDetailDAL.BuildUpdateParameter(true, Ids, ref strSql); SQLStringList.Add(strSql.ToString()); Parameters.Add(parameters3); //修改优惠劵状态 if (model.CouponId > 0) { SqlParameter[] parameters4 = CouponDAL.BuildUpdateParameter(model.CouponId, 1, model.OrderCode, ref strSql); SQLStringList.Add(strSql.ToString()); Parameters.Add(parameters4); } return access.ExecuteSqlTran(SQLStringList, Parameters, true); }
接下来贴出两个个详细的方法作参考:
internal static SqlParameter[] BuildOrderInforAddParameter(int UserId, string OrderCode, string Ids, ref StringBuilder strSql) { strSql = new StringBuilder(); strSql.Append("INSERT INTO OrderInfor("); strSql.Append("UserId,X_ProId,X_ProName,StockNum,BuyNum,UnitPrice,OrderCode,TotalPrice,IsOther)"); strSql.Append(" select UserId,X_ProId,X_ProName,StockNum,BuyNum,UnitPrice,@OrderCode,TotalPrice,IsOther from BasketDetail"); strSql.AppendFormat(" where UserId=@UserId and IsSubmit='false' and IsInquiry=2 and IsExpired=0 and BasketDetailId in ({0})", Ids); SqlParameter[] parameters = { new SqlParameter("@OrderCode", SqlDbType.NVarChar,100), new SqlParameter("@UserId", SqlDbType.Int) }; parameters[0].Value = OrderCode; parameters[1].Value = UserId; return parameters; }
internal static SqlParameter[] BuildUpdateParameter(int CouponId, int State, string OrderCode, ref StringBuilder strSql) { strSql = new StringBuilder(); strSql.Append("update Coupon set"); strSql.Append(" [State]=@State,OrderCode=@OrderCode"); strSql.AppendFormat(" where ID={0}", CouponId); SqlParameter[] parameters = { new SqlParameter("@State", SqlDbType.Int), new SqlParameter("@OrderCode", SqlDbType.NVarChar,50) }; parameters[0].Value = State; parameters[1].Value = OrderCode; return parameters; }