1.在一个窗体的应用程序中加入了实现VPN功能的代码，但却只能实现窗体的功能，没有VPN，这是为什么？
-
}
private void panel1_Paint(object sender, PaintEventArgs e)
{}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text == String.Empty && textBox2.Text != String.Empty)
MessageBox.Show("用户名不能为空！");
if (textBox2.Text == String.Empty && textBox1.Text != String.Empty)
MessageBox.Show("密码不能为空！");
if (textBox1.Text == String.Empty && textBox2.Text == String.Empty)
MessageBox.Show("用户名和密码不能为空！请重新输入！");
if (textBox1.Text != String.Empty && textBox2.Text != String.Empty)
MessageBox.Show("DTGS正在连接中。。。");
button4.Enabled = true;
}
private void button3_Click_1(object sender, EventArgs e)
{
Form2 form=new Form2();
form.Show();
}
private void button2_Click(object sender, EventArgs e)
{
Close();
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
checkBox2.Enabled = false;
}
private void checkBox2_CheckedChanged(object sender, EventArgs e)
{
以上是实现窗体功能的代码
public class VPNHelper
{
// 系统路径 C:\windows\system32\
private static string WinDir = Environment.GetFolderPath(Environment.SpecialFolder.System) + @"";
// rasdial.exe
private static string RasDialFileName = "rasdial.exe";
// VPN路径 C:\windows\system32\rasdial.exe
private static string VPNPROCESS = WinDir + RasDialFileName;
// VPN地址
public string IPToPing { get; set; }
// VPN名称
public string VPNName { get; set; }
// VPN用户名
public string UserName { get; set; }
// VPN密码
public string PassWord { get; set; }
public VPNHelper()
{
}
/// <summary>
/// 带参构造函数
/// </summary>
/// <param name="_vpnIP"></param>
/// <param name="_vpnName"></param>
/// <param name="_userName"></param>
/// <param name="_passWord"></param>
public VPNHelper(string _vpnIP, string _vpnName, string _userName, string _passWord)
{
this.IPToPing = _vpnIP;
this.VPNName = _vpnName;
this.UserName = _userName;
this.PassWord = _passWord;
}
/// <summary>
/// 尝试连接VPN(默认VPN)
/// </summary>
/// <returns></returns>
public void TryConnectVPN()
{
this.TryConnectVPN(this.VPNName, this.UserName, this.PassWord);
}
/// <summary>
/// 尝试断开连接(默认VPN)
/// </summary>
/// <returns></returns>
public void TryDisConnectVPN()
{
this.TryDisConnectVPN(this.VPNName);
}
/// <summary>
/// 创建或更新一个默认的VPN连接
/// </summary>
public void CreateOrUpdateVPN()
{
this.CreateOrUpdateVPN(this.VPNName, this.IPToPing);
}
/// <summary>
/// 尝试删除连接(默认VPN)
/// </summary>
/// <returns></returns>
public void TryDeleteVPN()
{
this.TryDeleteVPN(this.VPNName);
}
/// <summary>
/// 尝试连接VPN(指定VPN名称，用户名，密码)
/// </summary>
/// <returns></returns>
public void TryConnectVPN(string connVpnName, string connUserName, string connPassWord)
{
try
{
string args = string.Format("{0} {1} {2}", connVpnName, connUserName, connPassWord);
ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);
myProcess.CreateNoWindow = true;
myProcess.UseShellExecute = false;
Process.Start(myProcess);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
/// <summary>
/// 尝试断开VPN(指定VPN名称)
/// </summary>
/// <returns></returns>
public void TryDisConnectVPN(string disConnVpnName)
{
try
{
string args = string.Format(@"{0} /d", disConnVpnName);
ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);
myProcess.CreateNoWindow = true;
myProcess.UseShellExecute = false;
Process.Start(myProcess);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
/// <summary>
/// 创建或更新一个VPN连接(指定VPN名称，及IP)
/// </summary>
public void CreateOrUpdateVPN(string updateVPNname, string updateVPNip)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
allUsersPhoneBook.Open();
// 如果该名称的VPN已经存在，则更新这个VPN服务器地址
if (allUsersPhoneBook.Entries.Contains(updateVPNname))
{
allUsersPhoneBook.Entries[updateVPNname].PhoneNumber = updateVPNip;
// 不管当前VPN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VPN重启后才能起作用
allUsersPhoneBook.Entries[updateVPNname].Update();
}
// 创建一个新VPN
else
{
RasEntry entry = RasEntry.CreateVpnEntry(updateVPNname, updateVPNip, RasVpnStrategy.PptpFirst, RasDevice.GetDeviceByName("(PPTP)", RasDeviceType.Vpn));
allUsersPhoneBook.Entries.Add(entry);
dialer.EntryName = updateVPNname;
dialer.PhoneBookPath = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);
}
}
/// <summary>
/// 删除指定名称的VPN
/// 如果VPN正在运行，一样会在电话本里删除，但是不会断开连接，所以，最好是先断开连接，再进行删除操作
/// </summary>
/// <param name="delVpnName"></param>
public void TryDeleteVPN(string delVpnName)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
allUsersPhoneBook.Open();
if (allUsersPhoneBook.Entries.Contains(delVpnName))
{
allUsersPhoneBook.Entries.Remove(delVpnName);
}
}
/// <summary>
/// 获取当前正在连接中的VPN名称
/// </summary>
public List<string> GetCurrentConnectingVPNNames()
{
List<string> ConnectingVPNList = new List<string>();
Process proIP = new Process();
proIP.StartInfo.FileName = "cmd.exe ";
proIP.StartInfo.UseShellExecute = false;
proIP.StartInfo.RedirectStandardInput = true;
proIP.StartInfo.RedirectStandardOutput = true;
proIP.StartInfo.RedirectStandardError = true;
proIP.StartInfo.CreateNoWindow = true;//不显示cmd窗口
proIP.Start();
proIP.StandardInput.WriteLine(RasDialFileName);
proIP.StandardInput.WriteLine("exit");
// 命令行运行结果
string strResult = proIP.StandardOutput.ReadToEnd();
proIP.Close();
// 用正则表达式匹配命令行结果，只限于简体中文系统哦^_^
Regex regger = new Regex("(?<=已连接\r\n)(.*\n)*(?=命令已完成)", RegexOptions.Multiline);
// 如果匹配，则说有正在连接的VPN
if (regger.IsMatch(strResult))
{
string[] list = regger.Match(strResult).Value.ToString().Split('\n');
for (int index = 0; index < list.Length; index++)
{
if (list[index] != string.Empty)
ConnectingVPNList.Add(list[index].Replace("\r", ""));
}
}
// 没有正在连接的VPN，则直接返回一个空List<string>
return ConnectingVPNList;
}
}
}以上是实现
public class VPNHelper
{
// 系统路径 C:\windows\system32\
private static string WinDir = Environment.GetFolderPath(Environment.SpecialFolder.System) + @"";
// rasdial.exe
private static string RasDialFileName = "rasdial.exe";
// VPN路径 C:\windows\system32\rasdial.exe
private static string VPNPROCESS = WinDir + RasDialFileName;
// VPN地址
public string IPToPing { get; set; }
// VPN名称
public string VPNName { get; set; }
// VPN用户名
public string UserName { get; set; }
// VPN密码
public string PassWord { get; set; }
public VPNHelper()
{
}
/// <summary>
/// 带参构造函数
/// </summary>
/// <param name="_vpnIP"></param>
/// <param name="_vpnName"></param>
/// <param name="_userName"></param>
/// <param name="_passWord"></param>
public VPNHelper(string _vpnIP, string _vpnName, string _userName, string _passWord)
{
this.IPToPing = _vpnIP;
this.VPNName = _vpnName;
this.UserName = _userName;
this.PassWord = _passWord;
}
/// <summary>
/// 尝试连接VPN(默认VPN)
/// </summary>
/// <returns></returns>
public void TryConnectVPN()
{
this.TryConnectVPN(this.VPNName, this.UserName, this.PassWord);
}
/// <summary>
/// 尝试断开连接(默认VPN)
/// </summary>
/// <returns></returns>
public void TryDisConnectVPN()
{
this.TryDisConnectVPN(this.VPNName);
}
/// <summary>
/// 创建或更新一个默认的VPN连接
/// </summary>
public void CreateOrUpdateVPN()
{
this.CreateOrUpdateVPN(this.VPNName, this.IPToPing);
}
/// <summary>
/// 尝试删除连接(默认VPN)
/// </summary>
/// <returns></returns>
public void TryDeleteVPN()
{
this.TryDeleteVPN(this.VPNName);
}
/// <summary>
/// 尝试连接VPN(指定VPN名称，用户名，密码)
/// </summary>
/// <returns></returns>
public void TryConnectVPN(string connVpnName, string connUserName, string connPassWord)
{
try
{
string args = string.Format("{0} {1} {2}", connVpnName, connUserName, connPassWord);
ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);
myProcess.CreateNoWindow = true;
myProcess.UseShellExecute = false;
Process.Start(myProcess);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
/// <summary>
/// 尝试断开VPN(指定VPN名称)
/// </summary>
/// <returns></returns>
public void TryDisConnectVPN(string disConnVpnName)
{
try
{
string args = string.Format(@"{0} /d", disConnVpnName);
ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);
myProcess.CreateNoWindow = true;
myProcess.UseShellExecute = false;
Process.Start(myProcess);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
/// <summary>
/// 创建或更新一个VPN连接(指定VPN名称，及IP)
/// </summary>
public void CreateOrUpdateVPN(string updateVPNname, string updateVPNip)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
allUsersPhoneBook.Open();
// 如果该名称的VPN已经存在，则更新这个VPN服务器地址
if (allUsersPhoneBook.Entries.Contains(updateVPNname))
{
allUsersPhoneBook.Entries[updateVPNname].PhoneNumber = updateVPNip;
// 不管当前VPN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VPN重启后才能起作用
allUsersPhoneBook.Entries[updateVPNname].Update();
}
// 创建一个新VPN
else
{
RasEntry entry = RasEntry.CreateVpnEntry(updateVPNname, updateVPNip, RasVpnStrategy.PptpFirst, RasDevice.GetDeviceByName("(PPTP)", RasDeviceType.Vpn));
allUsersPhoneBook.Entries.Add(entry);
dialer.EntryName = updateVPNname;
dialer.PhoneBookPath = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);
}
}
/// <summary>
/// 删除指定名称的VPN
/// 如果VPN正在运行，一样会在电话本里删除，但是不会断开连接，所以，最好是先断开连接，再进行删除操作
/// </summary>
/// <param name="delVpnName"></param>
public void TryDeleteVPN(string delVpnName)
{
RasDialer dialer = new RasDialer();
RasPhoneBook allUsersPhoneBook = new RasPhoneBook();
allUsersPhoneBook.Open();
if (allUsersPhoneBook.Entries.Contains(delVpnName))
{
allUsersPhoneBook.Entries.Remove(delVpnName);
}
}
/// <summary>
/// 获取当前正在连接中的VPN名称
/// </summary>
public List<string> GetCurrentConnectingVPNNames()
{
List<string> ConnectingVPNList = new List<string>();
Process proIP = new Process();
proIP.StartInfo.FileName = "cmd.exe ";
proIP.StartInfo.UseShellExecute = false;
proIP.StartInfo.RedirectStandardInput = true;
proIP.StartInfo.RedirectStandardOutput = true;
proIP.StartInfo.RedirectStandardError = true;
proIP.StartInfo.CreateNoWindow = true;//不显示cmd窗口
proIP.Start();
proIP.StandardInput.WriteLine(RasDialFileName);
proIP.StandardInput.WriteLine("exit");
// 命令行运行结果
string strResult = proIP.StandardOutput.ReadToEnd();
proIP.Close();
// 用正则表达式匹配命令行结果，只限于简体中文系统哦^_^
Regex regger = new Regex("(?<=已连接\r\n)(.*\n)*(?=命令已完成)", RegexOptions.Multiline);
// 如果匹配，则说有正在连接的VPN
if (regger.IsMatch(strResult))
{
string[] list = regger.Match(strResult).Value.ToString().Split('\n');
for (int index = 0; index < list.Length; index++)
{
if (list[index] != string.Empty)
ConnectingVPNList.Add(list[index].Replace("\r", ""));
}
}
// 没有正在连接的VPN，则直接返回一个空List<string>
return ConnectingVPNList;
}
}
}
以上是实现VPN功能的代码