App_Code/DAL/gsclass.cs

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using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections.Generic;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Text;
using System.Data.OleDb;
using Maticsoft.DBUtility;//请先添加引用
namespace Maticsoft.DAL
{
	/// <summary>
	/// 数据访问类gsclass。
	/// </summary>
	public class gsclass
	{
        public static string connectionString = PubConstant.ConnectionString;  
		public gsclass()
		{}
		#region  成员方法


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

		/// <summary>
		/// 增加一条数据
		/// </summary>
		public void Add(Maticsoft.Model.gsclass model)
		{
			StringBuilder strSql=new StringBuilder();
			StringBuilder strSql1=new StringBuilder();
			StringBuilder strSql2=new StringBuilder();
			if (model.id != null)
			{
				strSql1.Append("id,");
				strSql2.Append(""+model.id+",");
			}
			if (model.classname != null)
			{
				strSql1.Append("classname,");
				strSql2.Append("'"+model.classname+"',");
			}
			if (model.classid != null)
			{
				strSql1.Append("classid,");
				strSql2.Append(""+model.classid+",");