Hi Friends, I am facing a problem with Microsoft upnp.dll, I have 5.1.2600.2180 of upnp.dll.
I wrote both VC++ as well as C# code; but could not iterate the device services. I also used get__item functions of IUPNPDevices and IUPNPServices but both returned null reference. I am sending you C# code snippet.
Code Snippet
using UPNPLib;
private void btnOK_Click(object sender, EventArgs e) {
try {
UPnPDeviceFinder pDeviceFinder = new UPnPDeviceFinder();
// get device list for DEVICE URN
UPnPDevices pDevices = pDeviceFinder.FindByType("urn:schemas-upnp-org:device:Printer:1", 0);
foreach (UPnPDevice pDevice in pDevices)
{
if (pDevice != null)
{ MessageBox.Show(pDevice.FriendlyName);
// get device services
UPnPServices pServices = pDevice.Services;

// While iterating the services it goes to catch block. Exception messge is "Exception from HRESUT:0X80040500"
foreach (UPnPService pService in pServices)
{
if (pService != null)
MessageBox.Show(pService.Id.ToString());
}
}
}
}
catch (Exception ex)
{ MessageBox.Show(ex.Message); }
}
I tried the code both in VC++ and C#, it could not able to iterate services with both languages. I also used get__item functions of IUPNPDevices and IUPNPServices but both returned null reference. Please let me know the problem cause.

Hi

the error code you are seeing is UPNP_E_INVALID_DOCUMENT - it suggests, that your device has invalid device description document. The error is actually on the device side

Oxygen