DAL/AreaInfoService.cs

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

namespace DAL
{
	/// <summary>
	/// 数据访问类:AreaInfoService
	/// </summary>
	public partial class AreaInfoService
	{
		public AreaInfoService()
		{}
		#region  BasicMethod
        /// <summary>
        /// 获取地区名称
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static string GetName(int id) 
        {
            string sql = "select areaName from AreaInfo where id = " + id;
            object obj = DBHelperSQL.GetSingle(sql);
            if(obj != null)
            {
                return obj.ToString();
            }
            return "";
        }
        /// <summary>
        /// 查询首字符信息
        /// </summary>
        /// <returns></returns>
        public static DataSet GetCharList()
        {
            string sql = "select Max(id) as id,Max(charIndex) as charIndex from AreaInfo group by charIndex order by charIndex asc";
            return DBHelperSQL.Query(sql);
        }

        /// <summary>
        /// 热门设置
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static int SetHot(int id,int status) 
        {
            string sql = "update AreaInfo set status = " + status + " where id = " + id;
            return DBHelperSQL.ExecuteSql(sql);
        }

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int id)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from AreaInfo");
			strSql.Append(" where id=@id");
			SqlParameter[] parameters = {