public static extern int RasDial(
[In][Optional] IntPtr extensions,
[In][Optional][MarshalAs(UnmanagedType.LPStr)] string phonebook,
[In] ref RasDialParams dialParams,
[In] int notifierType,
[In][Optional] RasDialFunc callback,
[Out] out IntPtr connection);
public static IntPtr RasDial(RasDialParams dialParams, string phonebook = null, RasDialFunc callback = null)
{
int result = RasDial(IntPtr.Zero, phonebook, ref dialParams, 0, callback, out IntPtr connection);
if (result == RasErrorCodes.ERROR_SUCCESS)
{
return(connection);
}
throw new RasApi32Exception(result);
}