c#-VPN寬帶連接的時候怎麼獲取他的錯誤代碼。。比如VPN連接錯誤代碼691，678。。之類的

VPN寬帶連接的時候怎麼獲取他的錯誤代碼。。比如VPN連接錯誤代碼691，678。。之類的

using System;

using System.Collections.Generic;

using System.Text;

using System.Diagnostics;

using DotRas;

using System.Text.RegularExpressions;

namespace VpnTest

{

public class VPNHelper

{

// 系統路徑 C:\windows\system32\

private static string WinDir = Environment.GetFolderPath(Environment.SpecialFolder.System) + @"";

// rasdial.exe

private static string RasDialFileName = "rasdial.exe";

// VPN路徑 C:\windows\system32\rasdial.exe

private static string VPNPROCESS = WinDir + RasDialFileName;

// VPN地址

public string IPToPing { get; set; }

// VPN名稱

public string VPNName { get; set; }

// VPN用戶名

public string UserName { get; set; }

// VPN密碼

public string PassWord { get; set; }

public VPNHelper()

{

}

public VPNHelper(string _vpnIP, string _vpnName, string _userName, string _passWord)

{

this.IPToPing = _vpnIP;

this.VPNName = _vpnName;

this.UserName = _userName;

this.PassWord = _passWord;

}

//嘗試連接VPN(默認VPN)

public void TryConnectVPN()

{

this.TryConnectVPN(this.VPNName,this.UserName,this.PassWord);

}

//嘗試斷開連接(默認VPN)

public void TryDisConnectVPN()

{

this.TryDisConnectVPN(this.VPNName);

}

//創建或更新一個默認的VPN連接

public void CreateOrUpdateVPN()

{

this.CreateOrUpdateVPN(this.VPNName, this.IPToPing);

}

//嘗試刪除連接(默認VPN)

public void TryDeleteVPN()

{

this.TryDeleteVPN(this.VPNName);

}

//嘗試連接VPN(指定VPN名稱，用戶名，密碼)

public void TryConnectVPN(string connVpnName,string connUserName,string connPassWord)

{

try

{

string args = string.Format("{0} {1} {2}", connVpnName, connUserName, connUserName);

ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);

myProcess.CreateNoWindow = true;

myProcess.UseShellExecute = false;

Process.Start(myProcess);

}

catch (Exception Ex)

{

Debug.Assert(false, Ex.ToString());

}

}

//嘗試斷開VPN(指定VPN名稱)

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());  
        }  
    }  

}

最佳回答：

好像是因為那個DotRas.dll沒有返回報錯機制
我最後使用CMD調用rasdial.exe
rasdial connVpnName connUserName connPassWord