//Name: GetAll
//Inputs: none
//Outputs: string array
//Errors: This method may throw the following errors.
// Failed to enumerate device tree!
// Invalid handle!
//Remarks: This is code I cobbled together from a number of newsgroup threads
// as well as some C++ stuff I translated off of MSDN. Seems to work.
// The idea is to come up with a list of devices, same as the device
// manager does. Currently it uses the actual "system" names for the
// hardware. It is also possible to use hardware IDs. See the docs
// for SetupDiGetDeviceRegistryProperty in the MS SDK for more details.
public List <DEVICE_INFO> GetAll()
{
List <DEVICE_INFO> HWList = new List <DEVICE_INFO>();
try
{
Guid myGUID = System.Guid.Empty;
IntPtr hDevInfo = Native.SetupDiGetClassDevs(ref myGUID, 0, IntPtr.Zero, Native.DIGCF_ALLCLASSES | Native.DIGCF_PRESENT);
if (hDevInfo.ToInt64() == Native.INVALID_HANDLE_VALUE)
{
throw new Exception("Invalid Handle");
}
Native.SP_DEVINFO_DATA DeviceInfoData;
DeviceInfoData = new Native.SP_DEVINFO_DATA();
//for 32-bit, IntPtr.Size = 4
//for 64-bit, IntPtr.Size = 8
if (IntPtr.Size == 4)
{
DeviceInfoData.cbSize = 28;
}
else if (IntPtr.Size == 8)
{
DeviceInfoData.cbSize = 32;
}
//is devices exist for class
DeviceInfoData.devInst = 0;
DeviceInfoData.classGuid = System.Guid.Empty;
DeviceInfoData.reserved = 0;
UInt32 i;
StringBuilder DeviceName = new StringBuilder("");
StringBuilder DeviceFriendlyName = new StringBuilder("");
StringBuilder DeviceHardwareId = new StringBuilder("");
DeviceName.Capacity = DeviceFriendlyName.Capacity = DeviceHardwareId.Capacity = Native.MAX_DEV_LEN;
for (i = 0; Native.SetupDiEnumDeviceInfo(hDevInfo, i, DeviceInfoData); i++)
{
DeviceName.Length = DeviceFriendlyName.Length = DeviceHardwareId.Length = 0;
if (!Native.SetupDiGetDeviceRegistryProperty(hDevInfo, DeviceInfoData, Native.SPDRP_DEVICEDESC, 0, DeviceName, Native.MAX_DEV_LEN, IntPtr.Zero))
{
continue;
}
Native.SetupDiGetDeviceRegistryProperty(hDevInfo, DeviceInfoData, Native.SPDRP_FRIENDLYNAME, 0, DeviceFriendlyName, Native.MAX_DEV_LEN, IntPtr.Zero);
Native.SetupDiGetDeviceRegistryProperty(hDevInfo, DeviceInfoData, Native.SPDRP_HARDWAREID, 0, DeviceHardwareId, Native.MAX_DEV_LEN, IntPtr.Zero);
UInt32 status, problem;
string dstatustr = "";
DeviceStatus deviceStatus = DeviceStatus.Unknown;
if (Native.CM_Get_DevNode_Status(out status, out problem, DeviceInfoData.devInst, 0) == Native.CR_SUCCESS)
{
deviceStatus = ((status & Native.DN_STARTED) > 0) ? DeviceStatus.Enabled : DeviceStatus.Disabled;
}
HWList.Add(new DEVICE_INFO {
name = DeviceName.ToString(), friendlyName = DeviceFriendlyName.ToString(), hardwareId = DeviceHardwareId.ToString(), status = deviceStatus, statusstr = dstatustr
});
}
Native.SetupDiDestroyDeviceInfoList(hDevInfo);
}
catch (Exception ex)
{
throw new Exception("Failed to enumerate device tree!", ex);
}
return(HWList);
}