App_Code/DAL/dalAreaInfo.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using System.Data;

using ENTITY;

namespace DAL
{
    /*区域信息业务逻辑层实现*/
    public class dalAreaInfo
    {
        /*待执行的sql语句*/
        public static string sql = "";

        /*添加区域信息实现*/
        public static bool AddAreaInfo(ENTITY.AreaInfo areaInfo)
        {
            string sql = "insert into AreaInfo(areaName) values(@areaName)";
            /*构建sql参数*/
            SqlParameter[] parm = new SqlParameter[] {
             new SqlParameter("@areaName",SqlDbType.VarChar)
            };
            /*给参数赋值*/
            parm[0].Value = areaInfo.areaName; //区域名称

            /*执行sql进行添加*/
            return (DBHelp.ExecuteNonQuery(sql, parm) > 0) ? true : false;
        }

        /*根据areaId获取某条区域信息记录*/
        public static ENTITY.AreaInfo getSomeAreaInfo(int areaId)
        {
            /*构建查询sql*/
            string sql = "select * from AreaInfo where areaId=" + areaId;
            SqlDataReader DataRead = DBHelp.ExecuteReader(sql, null);
            ENTITY.AreaInfo areaInfo = new ENTITY.AreaInfo();
            /*如果查询存在记录，就包装到对象中返回*/
            if (DataRead.Read())
            {
                areaInfo.areaId = Convert.ToInt32(DataRead["areaId"]);
                areaInfo.areaName = DataRead["areaName"].ToString();
            }
            return areaInfo;
        }

        /*更新区域信息实现*/
        public static bool EditAreaInfo(ENTITY.AreaInfo areaInfo)
        {
            string sql = "update AreaInfo set areaName=@areaName where areaId=@areaId";
            /*构建sql参数信息*/
            SqlParameter[] parm = new SqlParameter[] {
             new SqlParameter("@areaName",SqlDbType.VarChar),
             new SqlParameter("@areaId",SqlDbType.Int)
            };
            /*为参数赋值*/
            parm[0].Value = areaInfo.areaName;
            parm[1].Value = areaInfo.areaId;