c# 拨号换IP

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace AdslChangeIP
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {
            string strError = ““;
            const string adslName = “宽带连接“;
            const string adslUserName = “079103472442“;
            const string adslPassWord = “9690861“;
            new RasApi（）.HangUp（adslName out strError）;
            bool fh = new RasApi（）.DialUp（adslName adslUserName adslPassWord out strError）;
            if （fh）
          

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       3774  2015-06-13 11:06  Adsl\AdslChangeIP\AdslChangeIP\AdslChangeIP.csproj

     文件      15360  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\bin\Debug\AdslChangeIP.exe

     文件      36352  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\bin\Debug\AdslChangeIP.pdb

     文件      22472  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\bin\Debug\AdslChangeIP.vshost.exe

     文件        490  2012-06-06 02:06  Adsl\AdslChangeIP\AdslChangeIP\bin\Debug\AdslChangeIP.vshost.exe.manifest

     文件       1002  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\Form1.cs

     文件       2112  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\Form1.Designer.cs

     文件       5817  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\Form1.resx

     文件        594  2015-06-13 11:08  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.csproj.FileListAbsolute.txt

     文件        975  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.csproj.GenerateResource.Cache

     文件       2209  2015-06-13 11:06  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.csprojResolveAssemblyReference.cache

     文件      15360  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.exe

     文件        180  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.Form1.resources

     文件      36352  2015-06-13 11:14  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.pdb

     文件        180  2015-06-13 11:06  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\AdslChangeIP.Properties.Resources.resources

     文件        863  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6788  2015-06-13 11:04  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        493  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\Program.cs

     文件       1362  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\Properties\AssemblyInfo.cs

     文件       2876  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\Properties\Resources.Designer.cs

     文件       5612  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\Properties\Resources.resx

     文件       1099  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\Properties\Settings.Designer.cs

     文件        249  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\Properties\Settings.settings

     文件      22624  2015-06-13 11:06  Adsl\AdslChangeIP\AdslChangeIP\RasApi.cs

     文件        926  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP.sln

    ..A..H.     11264  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP.v11.suo

     文件       2012  2015-06-13 11:10  Adsl\安装\123.iss

     文件     329272  2015-06-13 11:10  Adsl\安装\Output\setup.exe

     目录          0  2015-06-13 11:02  Adsl\AdslChangeIP\AdslChangeIP\obj\Debug\TempPE

     目录          0  2015-06-13 11:08  Adsl\AdslChangeIP\AdslChangeIP\bin\Debug

............此处省略12个文件信息