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//====================================================================
using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlTypes;
using System.Data.SqlClient;
using Microsoft.SqlServer.Server;
public class AddrInfo
{
[Microsoft.SqlServer.Server.SqlProcedure]
public static void getAddrInfo(SqlString ip, out SqlString info)
{
using (SqlConnection connection = new SqlConnection("context connection=true"))
{
//IPµØַתΪÊý×Ö
string[] tmp = ip.Value.Split(new string[]{"."},StringSplitOptions.None);
Int64 ipn = ToInt(ToBinary(tmp[0]) + ToBinary(tmp[1]) + ToBinary(tmp[2]) + ToBinary(tmp[3]));
connection.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = connection;
cmd.CommandType = System.Data.CommandType.Text;
cmd.CommandText = "select addr_info from CZIP where ipn1<="
+ ipn.ToString() + " and ipn2>="
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