.net application to establish gprs connection

it is still not possible to make a gprs connection with mobilkom austria (A1).
I got the networktrace from mobilkom and can see that there is a problem with the autentification (i filled in correct data but they are transmitted incorrect). perhaps a problem with the char set (there is an @ in the username).

now i found this link:
Establishing GPRS connection in C# (RAS,RasDial)

i do not have visual studio because its very expensiv. with the express version it is not possible to make mobile apps.

is anybody able to test the source from the link above?

i downloaded the 30day trial of visual studio. this should be enouth for this tool (i hope).

with this code i got error 608 Das Gerät ist nicht vorhanden (The device is not available) in line
r = RasDial(IntPtr.Zero, IntPtr.Zero, (IntPtr)pAddr, 0, IntPtr.Zero, ref
RasConn);
.

is anybody able to help me?

Code:

 
namespace GRPSConnect
{
public partial class Form1 : Form
{
unsafe public static uint myRasDial(string EntryName, string
UserName, string Password, out IntPtr RasConn)
{
/*
EntryName ,UserName,Password - same as in RASDIALPARAMS structure (see
MSDN)
*/
// MessageBox.Show("Starte verbindung");
uint r = 0;
RasConn = IntPtr.Zero;
String test = "";
byte[] bRASDIALPARAMS = new byte[1464];
fixed (byte* pAddr = bRASDIALPARAMS)
{
test = test + pAddr[0];
byte* pCurrent = pAddr;
// MessageBox.Show(test);
System.Runtime.InteropServices.Marshal.WriteInt32((IntPtr)pCurrent, bRASDIALPARAMS.Length);
pCurrent += 4;
foreach (byte b in Encoding.Unicode.GetBytes(EntryName))
{
System.Runtime.InteropServices.Marshal.WriteByte((IntPtr)pCurrent, b);
test = test + b.ToString();
 
pCurrent++;
}
 
pCurrent = pAddr + 0x192;//0x192 - offset for RASDIALPARAMS.UserName
test = test + "::";
foreach (byte b in Encoding.Unicode.GetBytes(UserName))
{
System.Runtime.InteropServices.Marshal.WriteByte((IntPtr)pCurrent, b);
test = test + b.ToString();
pCurrent++;
}
pCurrent = pAddr + 0x394;//0x394 - offset for RASDIALPARAMS.Password
foreach (byte b in Encoding.Unicode.GetBytes(Password))
{
System.Runtime.InteropServices.Marshal.WriteByte((IntPtr)pCurrent, b);
test = test + b.ToString();
pCurrent++;
}
// MessageBox.Show(test);
r = RasDial(IntPtr.Zero, IntPtr.Zero, (IntPtr)pAddr, 0, IntPtr.Zero, ref
RasConn);
MessageBox.Show(r.ToString()); //608
}
return r;
 
 
}
[System.Runtime.InteropServices.DllImport("coredll.dll")]
public static extern uint RasDial(IntPtr dialExtensions, IntPtr
phoneBookPath, IntPtr rasDialParam, uint NotifierType,
IntPtr notifier, ref IntPtr pRasConn);
[System.Runtime.InteropServices.DllImport("coredll.dll")]
public static extern uint RasHangUp(IntPtr pRasConn);
 
public Form1()
{
InitializeComponent();
IntPtr rc; // connection handle
if (myRasDial("a1.net", "ppp@a1plus.at", "ppp", out rc) == 0)
{ //success
try
{
System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient("www.google.at", 80);
MessageBox.Show("OK");
//..................................
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
RasHangUp(rc);
}
else
MessageBox.Show("Error");
}
}
}

google talked to me again:

to search for gprs/edge does not bring many success.
RAS is the keyword.

there should be a rnaapp
in the windows folder.
but i can not find it.

The Remote Network Access (RNA) Dialer :: Chapter 6. Remote Access Service :: Pocket pc network programming :: Programming :: eTutorials.org

i found this key in the registry:

[HKEY_LOCAL_MACHINE\Comm\Autoras]
"Dialer"="rnaapp.exe"
"NoPromptOpt"="-p"
"RasEntryOpt"="-e"

where can i find this file?

i found the file. its there but hidden.
but i only can establish connections which are declared in settings=>gprs

i am now able to read the ras-book from the registry. i can copy entrys and edit them. but i am not able to connect.

here is my code:

BOOL MakeRasDial (HWND hDlgWnd)
{
BOOL bPassword;
DWORD dwError;
TCHAR szBuffer[100];
// Set hRasConn to NULL before attempting to connect.
hRasConn = NULL;
// Initialize the structure.
memset(&RasDialParams, 0, sizeof(RASDIALPARAMS));

RasDialParams.dwSize = sizeof(RASDIALPARAMS);
// RasDialParams.szPhoneNumber[0] = TEXT('\0');
// RasDialParams.szCallbackNumber[0] = TEXT('\0');
wsprintf(RasDialParams.szEntryName, TEXT("Desktop @ 115200"));
wsprintf(RasDialParams.szUserName, TEXT("ppp@A1plus.at"));
wsprintf(RasDialParams.szPassword, TEXT("ppp"));
wsprintf(RasDialParams.szDomain, TEXT("a1.net"));

// Try to establish a RAS connection.

if ((dwError = RasDial (
NULL, // Extension is not supported in Windows CE
NULL, // Phone book is in the registry
&RasDialParams, // RAS configuration for the connection
0xFFFFFFFF, // Must use this value for Windows CE
hDlgWnd, // Window receives the notification message
&hRasConn)) != 0) // Connection handle
{
printf("Could not connect using RAS. Error %x",dwError);
wsprintf (szBuffer, TEXT("Could not connect using RAS. Error %x"),
dwError);
MessageBox (hDlgWnd, szBuffer, szTitle, MB_OK);
return FALSE;
}
wsprintf (szBuffer, TEXT("Dialing %s..."), szRasEntryName);
// Set the dialing dialog box window name to szBuffer.
SetWindowText (hDlgWnd, szBuffer);
return TRUE;
}

but i get "Could not connect using RAS. Error 260" when i try to connect.

i do not find anyrhing about ras error 260 with google.

any ideas?