class SinASDL
{
    //ASDL在注册表中的存放位置，这个是针对WinXP的，不知道Win7是否是这个，待验证
    private static String _adlskeys = @"RemoteAccess\Profile";
    public static String adlskeys
    {
        get
        {
            return _adlskeys;
        }
    }

    /// <summary>
    /// 获取本机的拨号名称，也就是本机上所有的拨号
    /// </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>
    /// 实例化一个ASDL连接
    /// </summary>
    /// <param name="asdlname">ASDL名称，如“宽带连接”</param>
    /// <param name="username">用户名</param>
    /// <param name="password">密码</param>
    /// <param name="windowstyle">窗口显示方式，默认为因此拨号过程</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>
    /// 拨号名称
    /// </summary>
    public String ASDLName
    {
        get
        {
            return this._asdlname;
        }
        set
        {
            this._asdlname = value;
        }
    }

    /// <summary>
    /// 拨号进程的窗口方式
    /// </summary>
    public ProcessWindowStyle WindowStyle
    {
        get
        {
            return this._windowstyle;
        }
        set
        {
            this._windowstyle = value;
        }
    }

    private String _username = null;    //用户名
    private String _password = null;    //密码
    /// <summary>
    /// 用户名
    /// </summary>
    public String Username
    {
        get
        {
            return this._username;
        }
        set
        {
            this._username = value;
        }
    }
    /// <summary>
    /// 密码
    /// </summary>
    public String Password
    {
        get
        {
            return this._password;
        }
        set
        {
            this._password = value;
        }
    }



    /// <summary>
    /// 开始拨号
    /// </summary>
    /// <returns>返回拨号进程的返回值</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>
    /// 端口连接
    /// </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;
    }
}

 

下面是使用测试

 

//SinASDL asdl = new SinASDL("宽带连接", "08793312221", "123456");  //宽带连接
//使用枚举到的第一个进行拨号
SinASDL asdl = new SinASDL(SinASDL.GetASDLNames()[0], "08793312221", "123456", System.Diagnostics.ProcessWindowStyle.Normal);
if (asdl.Connect() == 0)
{
    MessageBox.Show("Success");
}
else
{
    MessageBox.Show("Fail");
}