I'm trying to open a USB device handle in MonoLibUsb (on Linux), but every time I open it I get IsInvalid == true on the device handle.
The USB device is definitely compatible with LibUsb as I've connected it to my Windows PC and can successfully use LibUsbDotNet to talk to it. If I try to use LibUsbDotNet in Mono the application hangs when trying to open it, so I figured LibUsbDotNet is for Windows and MonoLibUsb is for Mono (the name kind of gives it away). However, even MonoLibUsb fails to properly use the device.
So why is the device handle returned invalid?
Code
private void UsbInit() {
var sessionHandle = new MonoUsbSessionHandle();
var profileList = new MonoUsbProfileList();
profileList.Refresh(sessionHandle);
List<MonoUsbProfile> usbList = profileList.GetList().FindAll(MyVidPidPredicate);
foreach(MonoUsbProfile profile in usbList) {
var deviceHandle = profile.OpenDeviceHandle();
if (deviceHandle.IsInvalid) {
Console.WriteLine(string.Format("IsInvalid: {0} - {1}", MonoUsbSessionHandle.LastErrorCode, MonoUsbSessionHandle.LastErrorString));
}
}
}
private bool MyVidPidPredicate(MonoUsbProfile profile) {
if (profile.DeviceDescriptor.VendorID == 0xabcd && profile.DeviceDescriptor.ProductID == 0x1234)
return true;
return false;
}
Output
IsInvalid: Success -
This line in the documentation is very easy to overlook:
The user must have appropriate access permissions to the usb device before it can be used with linux.
If I'm starting the application as root (or through sudo) the device handle becomes valid.
I have an application that requires to control mobile broadband API.
I am struggling on correctly installing the api on my devices.
I've been follow the instructions in this document:
http://www.google.be/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&cad=rja&ved=0CC0QFjAA&url=http%3A%2F%2Fdownload.microsoft.com%2Fdownload%2F7%2FE%2F7%2F7E7662CF-CBEA-470B-A97E-CE7CE0D98DC2%2FMB_ManagedCode.docx&ei=kyvmUs7jE4e60QWbooHYDg&usg=AFQjCNG6yaGf4sRhdbWI99fE7tmQX8cmnA&sig2=2Fg-_DRYBIselKR19wTq2Q
and trying to combine the steps with this stackoverflow explanation
C# Read Windows Mobile Broadband connection properties
I have been able to lay a reference from visual studio to mbnapi.tlb in V7.0/lib. and I automatically now have a interop.mbnapi.tlb in my obj/debug folder.
When trying to "check the SIM is inserted and working / activated". => my code crashes on the following line
IMbnInterface[] mobileInterfaces = mbnInfMgrInterface.GetInterfaces() as IMbnInterface[];
When I run it on windows 8, mbnInfMgrInterface == null
I have already tried to install the same SDK on windows 8 as stated in the requirements of the document but the SDK is only meant for windows 7...
I have tried to register the mbnapi in windows 8 by performing
Regtlibv12 Mbnapi.tlb
no luck whatsoever...
what do I need to do to get this to work please?
anyone has some experience in this?
EDIT. on windows 7 (my development machine), I get the message "Device not ready", I think this is normal because I don't have mobile broadband on it, on windows 8 I do, but there the mobile interface manager is null => mbnInfMgrInterface == null.
thank you,
Not sure exactly what you are after, but after struggling with IMbnInterface and GetSignalStrength() (see https://msdn.microsoft.com/en-us/library/windows/desktop/dd323166(v=vs.85).aspx) and being unsuccessful, I found that you can obtain a lot of info using WMI:
int maxBandwidth = 0;
string query = "SELECT * FROM Win32_PerfRawData_Tcpip_NetworkInterface";
ManagementObjectSearcher moSearch = new ManagementObjectSearcher(query);
ManagementObjectCollection moCollection = moSearch.Get();
foreach (ManagementObject mo in moCollection)
{
if (Convert.ToInt32(mo["CurrentBandwidth"]) > maxBandwidth)
{
// Instead of CurrentBandwidth you may want to use BytesReceivedPerSec
maxBandwidth = Convert.ToInt32(mo["CurrentBandwidth"]);
}
}
Please see answer here: Determining the network connection link speed and here is the list of properties you can obtain: https://msdn.microsoft.com/en-us/library/aa394293(VS.85).aspx
UPDATE:
Please note that I can build and debug the above code (as part of a larger WPF application) from within Visual Studio 2015 on either Windows 7 or Windows 8.1, and I can deploy the same application onto Windows 7 where it runs successfully. For some reason when I deploy this application on Windows 8.1, I get an Invalid query message.
UPDATE 2:
Please note that I found you cannot get the network info in Windows 8.1 in the same way as you do in Windows 7, in that the System.Management namespace is not available on Windows 8.1. See https://code.msdn.microsoft.com/windowsapps/network-information-sample-63aaa201
string connectionProfileInfo = string.Empty;
ConnectionProfile InternetConnectionProfile = NetworkInformation.GetInternetConnectionProfile();
if (InternetConnectionProfile == null)
{
rootPage.NotifyUser("Not connected to Internet\n", NotifyType.StatusMessage);
}
else
{
connectionProfileInfo = GetConnectionProfile(InternetConnectionProfile);
OutputText.Text = connectionProfileInfo;
rootPage.NotifyUser("Success", NotifyType.StatusMessage);
}
// Which calls this function, that allows you to determine how strong the signal is and the associated bandwidth
string GetConnectionProfile(ConnectionProfile connectionProfile)
{
// ...
if (connectionProfile.GetSignalBars().HasValue)
{
connectionProfileInfo += "====================\n";
connectionProfileInfo += "Signal Bars: " + connectionProfile.GetSignalBars() + "\n";
}
// ...
}
I am trying to programmatically create and destroy a network bridge on Windows 7. Technologically I would love to stay within the .Net 4 realm (PInvokes are fine, ofc), but utilizing C++ is an option.
My research so far turned up that for configuration, netsh-commands are the route to go. However, there seems to be no option to actually spin up a new bridge with them.
I am currently investigating this program that uses the INetCfg APIs, but it appears that the program or, more specifically, the APIs, are not able to (again) build a new bridge.
If anyone can contribute to solving the problem, any kind of help is greatly appreciated.
[Update:] It seems that newtork bridges are implemented using a driver which then binds to both devices. I cannot yet make much of that information, so still any help is appreciated.
I've found a solution that works for both bridge service and bridge adapter driver. I don't use UpdateDriverForPlugAndPlayDevices like devcon but I'm using DiInstallDevice instead.
However, installing the drivers for the first time in non interactive mode (without user interaction) is not possible. This is because there are no corresponding .cat files for the builtin bridge .inf files. Neither UpdateDriverForPlugAndPlayDevices nor DiInstallDevice nor DiInstallDriver is intended for manual driver installation where .inf file is already contained in %SystemRoot%\inf but not yet in %SystemRoot%\System32\DriverStore.
The files should be on the distribution media or in a vendor-created directory, not in a system location such as %SystemRoot%\inf
All of the mentioned installation methods will create a OEM copy of the .inf file and will install it in driver store. Because this OEM copy is initially not part of the driver store, windows will show a prompt dialog and ask for user interaction either force installing the driver or canceling. Subsequent driver installations is possible without any user interaction by the way. Also preinstalled drivers (see pnputil -a) can be installed in non interactive mode.
So this is my solution:
First a device entry in HKLM\System\CurrentControlSet\Enum\Root is created with the given hardware id as device name (ms_bridge, ms_bridgemp) with the help of SetupDiCreateDeviceInfo
The hardware id is assigned with SetupDiSetDeviceRegistryProperty
The driver list is builded by exactly the given single .inf file with the help of SetupDiSetDeviceInstallParams
Enumerating and preselecting driver with SetupDiSetSelectedDriver
Registering device with SetupDiCallClassInstaller(DIF_REGISTERDEVICE...)
Installing with DiInstallDevice
This is the full code:
HRESULT InstallDriver(const wchar_t* DriverInfFile, const wchar_t* HardwareId) {
HRESULT Hr = S_OK;
GUID ClassGUID;
wchar_t ClassName[MAX_CLASS_NAME_LEN] = {0};
if (SetupDiGetINFClass(DriverInfFile, &ClassGUID, ClassName, sizeof(ClassName) / sizeof(wchar_t), nullptr) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
return Hr;
}
HDEVINFO DeviceInfoSet = SetupDiCreateDeviceInfoList(&ClassGUID, nullptr);
if (DeviceInfoSet == INVALID_HANDLE_VALUE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
return Hr;
}
SP_DEVINFO_DATA DeviceInfoData = {
sizeof(SP_DEVINFO_DATA), 0
};
if (SetupDiCreateDeviceInfo(DeviceInfoSet, HardwareId, &ClassGUID, nullptr, nullptr, DICD_GENERATE_ID, &DeviceInfoData) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
SetupDiDestroyDeviceInfoList(DeviceInfoSet);
return Hr;
}
if (SetupDiSetDeviceRegistryProperty(DeviceInfoSet, &DeviceInfoData, SPDRP_HARDWAREID, (LPBYTE) HardwareId, (DWORD) (wcslen(HardwareId) + 1) * sizeof(wchar_t)) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
SetupDiDestroyDeviceInfoList(DeviceInfoSet);
return Hr;
}
SP_DEVINSTALL_PARAMS InstallParams = {sizeof(SP_DEVINSTALL_PARAMS), 0};
InstallParams.FlagsEx = DI_FLAGSEX_ALLOWEXCLUDEDDRVS | DI_FLAGSEX_ALWAYSWRITEIDS;
InstallParams.Flags = DI_QUIETINSTALL | DI_ENUMSINGLEINF;
wcscpy_s(InstallParams.DriverPath, DriverInfFile);
if (SetupDiSetDeviceInstallParams(DeviceInfoSet, &DeviceInfoData, &InstallParams) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
SetupDiDestroyDeviceInfoList(DeviceInfoSet);
return Hr;
}
SP_DRVINFO_DATA DriverInfoData = {sizeof(SP_DRVINFO_DATA), 0};
if (SetupDiBuildDriverInfoList(DeviceInfoSet, &DeviceInfoData, SPDIT_COMPATDRIVER) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
SetupDiDestroyDriverInfoList(DeviceInfoSet, &DeviceInfoData, SPDIT_COMPATDRIVER);
}
// Use first best driver (since specified by inf file)
if (SetupDiEnumDriverInfo(DeviceInfoSet, &DeviceInfoData, SPDIT_COMPATDRIVER, 0, &DriverInfoData)) {
SetupDiSetSelectedDriver(DeviceInfoSet, &DeviceInfoData, &DriverInfoData);
}
if (SetupDiCallClassInstaller(DIF_REGISTERDEVICE, DeviceInfoSet, &DeviceInfoData) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
}
// TODO: Allow non interactive mode for drivers already contained in %SystemRoot%\inf directory
//BOOL PreviousMode = SetupSetNonInteractiveMode(TRUE);
if (Hr == S_OK) {
if (DiInstallDevice(nullptr, DeviceInfoSet, &DeviceInfoData, &DriverInfoData, 0, nullptr) == FALSE) {
Hr = HRESULT_FROM_SETUPAPI(GetLastError());
// Ensure that the device entry in \ROOT\ENUM\ will be removed...
SetupDiRemoveDevice(DeviceInfoSet, &DeviceInfoData);
}
}
//SetupSetNonInteractiveMode(PreviousMode);
SetupDiDestroyDeviceInfoList(DeviceInfoSet);
return Hr;
}
Todo's: Find a way to install this bridge drivers from within %SystemRoot%\inf without creating OEM copies and without any user interaction.
You can gain read/write access to subversion repository at Sourceforge
Any additional information or suggestion for improvement is appreciated! Everyone please feel free to checkout/modify the code.
Basic commands:
bridgeutil.exe /install
bridgeutil.exe /uninstall
bridgeutil.exe /attach
bridgeutil.exe /detach
Examples:
bridgeutil.exe /attach "PCI\VEN_10EC&DEV_8169" /attach {5d624f94-8850-40c3-a3fa-a4fd2080baf3}\vwifimp
Attaches each Realtek 8169 Network Interface Cards and Microsoft Virtual Wifi Adapter to bridge. If the bridge is not installed yet, it will be installed first.
bridgeutil.exe /detach 1
Detaches adapter with id 1 from bridge.
To see a list of bridgeable adapters, just call bridgeutil.exe without any arguments.
It is actually possible to create and network bridges via the SetupAPI.
Using the DevCon Tool, destroying them is as easy as this...
devcon.exe remove ms_bridgemp
...while building bridges can be done with this command:
devcon.exe install "C:\Windows\inf\netbrdgm.inf" ms_bridgemp
DevCon is open source, so you can dig into the sources to see how it implements those commands (the DevCon Tool is essentially a CLI to the SetupAPI).
Please note: The commands relate to Windows 7. The approach is said to work on XP and I suppose it works on other Windows Versions, too, but the .INF-File might have a different name or the device ID might differ.
After much unsuccessful searching on the Internet I wrote and have been successfully using the following Windows Script Host script "BridgeConnections.vbs" to create a network bridge on Windows XP (this method also works on Windows 7 and Windows 8 with slight modifications). It can be run from the command prompt or from a batch file as follows:
C:\Temp> cscript BridgeConnections.vbs
File BridgeConnections.vbs:
' This VBScript opens the "Network Connections" control panel window,
' sends Ctrl+A ("Select All") and Alt+N ("Advanced" menu) and
' C ("Bridge Connections" menu command) keystrokes to it and then waits
' until the splash window "Please wait while Windows bridges the connections..."
' disappears from the screen
Dim WshShell, Count
Set WshShell = WScript.CreateObject("WScript.Shell")
WshShell.Exec("rundll32.exe shell32.dll,Control_RunDLL ncpa.cpl")
Count = 0
Do While Not WshShell.AppActivate("Network Connections") And Count < 10
Count = Count + 1
WScript.Sleep 1000
WScript.Echo "Waiting for the 'Network Connections' window... " & CStr(Count) & "s"
Loop
WshShell.SendKeys "^(a)"
WshShell.SendKeys "%(n)"
WshShell.SendKeys "c"
Count = 0
Do While Not WshShell.AppActivate("Network Bridge") And Count < 10
Count = Count + 1
WScript.Sleep 1000
WScript.Echo "Waiting for the 'Network Bridge' splash window... " & CStr(Count) & "s"
Loop
Count = 0
Do While WshShell.AppActivate("Network Bridge") And Count < 120
Count = Count + 1
WScript.Sleep 1000
WScript.Echo "Waiting for the 'Network Bridge' splash window to disappear... " & CStr(Count) & "s"
Loop
Likewise one could modify the script to "Delete" the bridge if required (make a single selection with Shift and navigate keys and send a different keystroke command). In my case I only need to bridge all available ethernet adapters from a batch file so the above method works just fine.
In my experience, the "slight" problem with the
devcon.exe install "C:\Windows\inf\netbrdgm.inf" ms_bridgemp
approach posted here earlier is that it would create an empty, "half-backed" bridge with no adapters in it. So you will still have to go to the Windows GUI and "Add" adapters it one by one manually before it becomes really usable.
The only fully automated solution that really works for me it the above script.
To do the same actions from a C++ or C# code without the script you'd need to know and call undocumented Shell Network Interfaces (NETSHELL.DLL) functions which in turn are called by the Explorer Shell when the user initiates the actions via list view item selection and context menu command in the Windows GUI. A C++ sample of calling into the Shell Network Interface for programmatically disabling/enabling a Network Adapter can be seen here. Unfortunately there is no sample yet for creating/removing the Network Bridge adapter. So until it becomes available I'll stick with the script.
Based on the bindview example, I put up an utilitary called bindbridge, which works as following:
Usage: bindbridge <deviceId> <bind|unbind>
The source can be found at https://github.com/OurGrid/OurVirt/tree/master/tools/win32/bindbridge, and it assumes the bridge device already exists - which can be created with devcon, as per previous answers - and its name to be ms_bridge, what can be easily changed in the sources.
I'm using it to programatically add tap interfaces to the bridge, so my command line is something in the lines of:
bindbridge ROOT\NET\0001 bind
It turns out that, unfortunately, there is no documented way of setting up a network bridge.
The code which does that is located inside hnetcfg.dll, and is invoked only by Windows Explorer. It installs bridge driver, and configures bridge interface.
It might be possible to call it yourself (using COM), but that would require reverse engineering and may break on any system update, so I recommend against doing that.
I am using POS for .Net framework version 1.12 for one of my project.
Microsoft POS for .NET is a class library that is part of Microsoft Windows Embedded for Point of Service.
http://msdn.microsoft.com/en-us/library/ms828083%28v=winembedded.10%29.aspx
private PosPrinter GetReceiptPrinter()
{
PosExplorer posExplorer = new PosExplorer(this);
DeviceInfo receiptPrinterDevice = posExplorer.GetDevice(DeviceType.PosPrinter);
return (PosPrinter)posExplorer.CreateInstance(receiptPrinterDevice);
}
above is the sample code for find the printer. Now my issue is that POS is not able to detect the printer but only open simulator with data when i run my application.
can anyone please help me ?
I had developed an application for a POS running Windows CE as the operating System but for that POS, the manufacturer provided a custom dll for invoking the operations of the printer which I consumed in my C# code. Check with the POS manufacturer and see if they are providing custom dll for the same.
Your line of code
DeviceInfo receiptPrinterDevice = posExplorer.GetDevice(DeviceType.PosPrinter);
will return the default or first PosPrinter found, which in your case looks like it is the simulator.
You need to either (1) Iterate over the collection of printers and somehow select the one you want. i.e.
foreach (DeviceInfo deviceInfo in explorer.GetDevices(DeviceType.PosPrinter))
{
if (isThisThePrinterIWant(deviceInfo)) // user defined function (maybe lookup saved preference file)
{
return (PosPrinter)posExplorer.CreateInstance(deviceInfo );
}
} // Note: GetDevices() not GetDevice()
or (2) Set a logical name for your printer (using software that came with your printer, or the POSDM utility included with Pos for .Net SDK) and change the above line to
DeviceInfo receiptPrinterDevice = posExplorer.GetDevice(DeviceType.PosPrinter, "madeUpLogicalName");
or (3) Simply set the desired printer as the default printer, and leave your code the way it is.
My application requires the windows feature
to be installed.
I currently use this solution to see if it is installed.
Now how will I be able to installe it once I know it is not running. I have tried:
List<ServiceController> services = ServiceController.GetServices( ).ToList( );
ServiceController msQue = services.Find( o => o.ServiceName == "MSMQ" );
if ( msQue != null )
{
if ( msQue.Status == ServiceControllerStatus.Running )
{
Console.Write( "it is running" );
return;
}
}
else
{
Console.WriteLine( "It is not running \n\nPress enter to install" );
Console.Read( );
msQue.Start( ); // <- I was hoping to look for a method that will turn feature on or off
}
DISCLAIMER:
I wouldn't try to install it from code; instead, I would make Message Queueing a prerequisite of your application and install it when you install the app.
I don't know if you can do it from C# but here's articles on performing an unattended installation. You may be able to build a command line to perform the installation.
Server 2003 / Windows XP : http://technet.microsoft.com/en-us/library/cc778216(v=ws.10).aspx
Server 2008 / Windows 7: http://technet.microsoft.com/en-us/library/cc731283(v=ws.10).aspx