Backup2/orderdetail.cs

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using System;
using System.Data;
using System.Text;
using MySql.Data.MySqlClient;
using Maticsoft.DBUtility;//Please add references
namespace Maticsoft.DAL
{
	/// <summary>
	/// 数据访问类:orderdetail
	/// </summary>
	public partial class orderdetail
	{
		public orderdetail()
		{}
		#region  BasicMethod

		/// <summary>
		/// 得到最大ID
		/// </summary>
		public int GetMaxId()
		{
		return DbHelperMySQL.GetMaxID("OrderDetailId", "orderdetail"); 
		}

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int OrderDetailId)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from orderdetail");
			strSql.Append(" where OrderDetailId=@OrderDetailId ");
			MySqlParameter[] parameters = {
					new MySqlParameter("@OrderDetailId", MySqlDbType.Int32,11)			};
			parameters[0].Value = OrderDetailId;

			return DbHelperMySQL.Exists(strSql.ToString(),parameters);
		}


		/// <summary>
		/// 增加一条数据
		/// </summary>
		public bool Add(Maticsoft.Model.orderdetail model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into orderdetail(");
			strSql.Append("OrderDetailId,OrderId,AlbumId,Quantity,UnitPrice)");
			strSql.Append(" values (");
			strSql.Append("@OrderDetailId,@OrderId,@AlbumId,@Quantity,@UnitPrice)");
			MySqlParameter[] parameters = {
					new MySqlParameter("@OrderDetailId", MySqlDbType.Int32,11),
					new MySqlParameter("@OrderId", MySqlDbType.Int32,11),
					new MySqlParameter("@AlbumId", MySqlDbType.Int32,11),
					new MySqlParameter("@Quantity", MySqlDbType.Int32,11),
					new MySqlParameter("@UnitPrice", MySqlDbType.Decimal,10)};
			parameters[0].Value = model.OrderDetailId;
			parameters[1].Value = model.OrderId;
			parameters[2].Value = model.AlbumId;
			parameters[3].Value = model.Quantity;