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http://www.cnblogs.com/zengxiangzhan/archive/2009/09/15/1567329.html
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http://www.cnblogs.com/zengxiangzhan/archive/2009/12/04/1617186.html
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using System;
using System.Collections.Generic;
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using System.Web;
using System.Web.Configuration;
using System.Data.SqlClient;
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{
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