App_Code/DAL/Orders.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;

namespace HZP.DAL
{
	/// <summary>
	/// 数据访问类:Orders
	/// </summary>
	public partial class Orders
	{
		public Orders()
		{}
		#region  Method

		/// <summary>
		/// 得到最大ID
		/// </summary>
		public int GetMaxId()
		{
		return DbHelperOleDb.GetMaxID("orderid", "Orders"); 
		}


		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int orderid)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from Orders");
			strSql.Append(" where orderid="+orderid+" ");
			return DbHelperOleDb.Exists(strSql.ToString());
		}

		/// <summary>
		/// 增加一条数据
		/// </summary>
		public int Add(HZP.Model.Orders model)
		{
			StringBuilder strSql=new StringBuilder();
			StringBuilder strSql1=new StringBuilder();
			StringBuilder strSql2=new StringBuilder();
			if (model.orderpid != null)
			{
				strSql1.Append("orderpid,");
				strSql2.Append(""+model.orderpid+",");
			}
			if (model.pnum != null)
			{
				strSql1.Append("pnum,");
				strSql2.Append(""+model.pnum+",");
			}
			if (model.orderuser != null)
			{
				strSql1.Append("orderuser,");
				strSql2.Append(""+model.orderuser+",");
			}
			if (model.ordertime != null)