C# 利用DotRas 操作adsl

/// <summary>
/// 创建或更新一个PPPOE连接(指定PPPOE名称)
/// </summary>
void CreateOrUpdatePPPOE(string updatePPPOEname)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
string path = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);
allUsersPhoneBook.Open(path);
// 如果已经该名称的PPPOE已经存在，则更新这个PPPOE服务器地址
if (allUsersPhoneBook.Entries.Contains(updatePPPOEname))
{
allUsersPhoneBook.Entries[updatePPPOEname].PhoneNumber = " ";
// 不管当前PPPOE是否连接，服务器地址的更新总能成功，如果正在连接，则需要PPPOE重启后才能起作用
allUsersPhoneBook.Entries[updatePPPOEname].Update();
}
// 创建一个新PPPOE
else
{
string adds = string.Empty;
ReadOnlyCollection<RasDevice> readOnlyCollection = RasDevice.GetDevices();
//                foreach (var col in readOnlyCollection)
//                {
//                    adds += col.Name + ":" + col.DeviceType.ToString() + "|||";
//                }
//                _log.Info("Devices are : " + adds);
// Find the device that will be used to dial the connection.
RasDevice device = RasDevice.GetDevices().Where(o => o.DeviceType == RasDeviceType.PPPoE).First();
RasEntry entry = RasEntry.CreateBroadbandEntry(updatePPPOEname, device);    //建立宽带连接Entry
entry.PhoneNumber = " ";
allUsersPhoneBook.Entries.Add(entry);
}
}

/// <summary>
/// 断开 宽带连接
/// </summary>
public void Disconnect()
{
ReadOnlyCollection<RasConnection> conList = RasConnection.GetActiveConnections();
foreach (RasConnection con in conList)
{
con.HangUp();
}
}

/// <summary>
/// 宽带连接，成功返回true,失败返回 false
/// </summary>
/// <param name="PPPOEname">宽带连接名称</param>
/// <param name="username">宽带账号</param>
/// <param name="password">宽带密码</param>
/// <returns></returns>
public bool Connect(string PPPOEname, string username, string password,ref string msg )
{
try
{
CreateOrUpdatePPPOE(PPPOEname);
using (RasDialer dialer = new RasDialer())
{
dialer.EntryName = PPPOEname;
dialer.AllowUseStoredCredentials = true;
dialer.Timeout = 1000;
dialer.PhoneBookPath = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);
dialer.Credentials = new NetworkCredential(username, password);
dialer.Dial();
return true;
}
}
catch (RasException re)
{
msg = re.ErrorCode + " " + re.Message;
return false;
}
}
}