SuLei.DAL/sl_site_channel.cs

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using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Reflection;
using System.Text;
using SuLei.DBUtility;
using SuLei.Common;

namespace SuLei.DAL
{
    /// <summary>
    /// 数据访问类:系统频道表
    /// </summary>
    public partial class sl_site_channel
    {
        private string databaseprefix;//数据库表名前缀
        public sl_site_channel(string _databaseprefix)
        {
            databaseprefix = _databaseprefix;
        }

        #region 基本方法================================
        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from  " + databaseprefix + "site_channel");
            strSql.Append(" where id=@id");
            SqlParameter[] parameters = {
					new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = id;

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

        /// <summary>
        /// 增加一条数据及其子表
        /// </summary>
        public int Add(Model.sl_site_channel model)
        {
            //取得站点对应的导航，如果站点导航不存在则退出新增
            int parent_id = new DAL.sl_sites(databaseprefix).GetSiteNavId(model.site_id);
            if (parent_id == 0)
            {
                return 0;
            }

            using (SqlConnection conn = new SqlConnection(DbHelperSQL.connectionString))
            {
                conn.Open(); //打开数据连接
                using (SqlTransaction trans = conn.BeginTransaction())
                {
                    try
                    {
                        #region 写入频道表数据==================
                        StringBuilder strSql = new StringBuilder();
                        StringBuilder str1 = new StringBuilder();//数据字段