class SinASDL{  //ASDL在注冊表中的存放位置，這個是針對WinXP的，  //不知道Win7是否是這個，待驗證  private static String _adlskeys = @"RemoteAccess/Profile";  public static String adlskeys  {    get    {      return _adlskeys;    }  }  /// <summary>  /// 獲取本機的撥號名稱，也就是本機上所有的撥號  /// </summary>  /// <returns></returns>  public static String[] GetASDLNames()  {    RegistryKey RegKey = Registry.CurrentUser.OpenSubKey(adlskeys);    if (RegKey != null)      return RegKey.GetSubKeyNames();    else      return null;  }  private String _asdlname = null;  private ProcessWindowStyle _windowstyle = ProcessWindowStyle.Hidden;  /// <summary>  /// 實例化一個ASDL連接  /// </summary>  /// <param name="asdlname">ASDL名稱，如“寬帶連接”</param>  /// <param name="username">用戶名</param>  /// <param name="password">密碼</param>  /// <param name="windowstyle">窗口顯示方式，默認為因此撥號過程</param>  public SinASDL(String asdlname, String username = null, String password = null, ProcessWindowStyle windowstyle = ProcessWindowStyle.Hidden)  {    this.ASDLName = asdlname;    this.Username = username;    this.Password = password;    this.WindowStyle = windowstyle;  }  /// <summary>  /// 撥號名稱  /// </summary>  public String ASDLName  {    get    {      return this._asdlname;    }    set    {      this._asdlname = value;    }  }  /// <summary>  /// 撥號進程的窗口方式  /// </summary>  public ProcessWindowStyle WindowStyle  {    get    {      return this._windowstyle;    }    set    {      this._windowstyle = value;    }  }  private String _username = null;  //用戶名  private String _password = null;  //密碼  /// <summary>  /// 用戶名  /// </summary>  public String Username  {    get    {      return this._username;    }    set    {      this._username = value;    }  }  /// <summary>  /// 密碼  /// </summary>  public String Password  {    get    {      return this._password;    }    set    {      this._password = value;    }  }  /// <summary>  /// 開始撥號  /// </summary>  /// <returns>返回撥號進程的返回值</returns>  public int Connect()  {    Process pro = new Process();    pro.StartInfo.FileName = "rasdial.exe";    pro.StartInfo.Arguments = this.ASDLName + " " + this.Username + " " + this.Password;    pro.StartInfo.WindowStyle = this.WindowStyle;    pro.Start();    pro.WaitForExit();    return pro.ExitCode;  }  /// <summary>  /// 端口連接  /// </summary>  /// <returns></returns>  public int Disconnect()  {    Process pro = new Process();    pro.StartInfo.FileName = "rasdial.exe";    pro.StartInfo.Arguments = this.ASDLName + " /DISCONNECT";    pro.StartInfo.WindowStyle = this.WindowStyle;    pro.Start();    pro.WaitForExit();    return pro.ExitCode;  }}

//SinASDL asdl = new SinASDL("寬帶連接", "08793312221", "123456");//寬帶連接//使用枚舉到的第一個進行撥號SinASDL asdl = new SinASDL(SinASDL.GetASDLNames()[0], "08793312221", "123456", System.Diagnostics.ProcessWindowStyle.Normal);if (asdl.Connect() == 0){  MessageBox.Show("Success");}else{  MessageBox.Show("Fail");}