/// <summary>
/// Set device state.
/// </summary>
/// <param name="match"></param>
/// <param name="enable"></param>
/// <returns>Success state.</returns>
/// <remarks>
/// This is nearly identical to the method above except it
/// tries to match the hardware description against the criteria
/// passed in. If a match is found, that device will the be
/// enabled or disabled based on bEnable.
/// Errors: This method may throw the following exceptions.
/// Failed to enumerate device tree!
/// </remarks>
public static bool SetDeviceState(string deviceId, bool enable)
{
try
{
Guid myGUID = System.Guid.Empty;
IntPtr deviceInfoSet = SetupDiGetClassDevs(myGUID, null, IntPtr.Zero, DIGCF.DIGCF_ALLCLASSES | DIGCF.DIGCF_PRESENT);
if (deviceInfoSet.ToInt32() == INVALID_HANDLE_VALUE)
{
return false;
}
var deviceInfoData = new SP_DEVINFO_DATA();
deviceInfoData.Initialize();
deviceInfoData.DevInst = 0;
deviceInfoData.ClassGuid = System.Guid.Empty;
deviceInfoData.Reserved = IntPtr.Zero;
for (var i = 0; SetupDiEnumDeviceInfo(deviceInfoSet, i, ref deviceInfoData); i++)
{
var currentDeviceId = GetDeviceId(deviceInfoData.DevInst);
if (deviceId == currentDeviceId)
{
SetDeviceState(deviceInfoSet, deviceInfoData, enable);
}
}
SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
catch (Exception ex)
{
throw new Exception("Failed to enumerate device tree!", ex);
//return false;
}
return true;
}
public static DeviceInfo[] GetDevices(Guid classGuid, DIGCF flags, string deviceId, int vid, int pid, int rev)
{
lock (GetDevicesLock)
{
IntPtr deviceInfoSet = SetupDiGetClassDevs(classGuid, null, IntPtr.Zero, flags); // | DIGCF.DIGCF_PRESENT
if (deviceInfoSet.ToInt32() == ERROR_INVALID_HANDLE_VALUE)
{
throw new Exception("Invalid Handle");
}
var list = new List<DeviceInfo>();
var deviceInfoData = new SP_DEVINFO_DATA();
deviceInfoData.Initialize();
int i;
for (i = 0; SetupDiEnumDeviceInfo(deviceInfoSet, i, ref deviceInfoData); i++)
{
var currentDeviceId = GetDeviceId(deviceInfoData.DevInst);
if (!string.IsNullOrEmpty(deviceId) && deviceId != currentDeviceId) continue;
var device = GetDeviceInfo(deviceInfoSet, deviceInfoData, deviceId);
if (vid > 0 && device.VendorId != vid) continue;
if (pid > 0 && device.ProductId != pid) continue;
if (rev > 0 && device.Revision != rev) continue;
list.Add(device);
}
SetupDiDestroyDeviceInfoList(deviceInfoSet);
return list.OrderBy(x => x.ClassDescription).ThenBy(x => x.Description).ToArray();
}
}
public static DeviceInfo GetParentDevice(Guid classGuid, DIGCF flags, string deviceId)
{
lock (GetDevicesLock)
{
IntPtr deviceInfoSet = SetupDiGetClassDevs(classGuid, null, IntPtr.Zero, flags); // | DIGCF.DIGCF_PRESENT
if (deviceInfoSet.ToInt32() == ERROR_INVALID_HANDLE_VALUE)
{
throw new Exception("Invalid Handle");
}
DeviceInfo device = null;
var deviceInfoData = new SP_DEVINFO_DATA();
deviceInfoData.Initialize();
int i;
for (i = 0; SetupDiEnumDeviceInfo(deviceInfoSet, i, ref deviceInfoData); i++)
{
if (deviceId == GetDeviceId(deviceInfoData.DevInst))
{
uint parentDeviceInstance = 0;
var CRResult = CM_Get_Parent(out parentDeviceInstance, deviceInfoData.DevInst, 0);
if (CRResult == CR.CR_NO_SUCH_DEVNODE) break;
if (CRResult != CR.CR_SUCCESS) break;
var parentDeviceId = GetDeviceId(parentDeviceInstance);
device = GetDevice(classGuid, flags, parentDeviceId);
break;
}
}
SetupDiDestroyDeviceInfoList(deviceInfoSet);
return device;
}
}
public static SP_DEVINFO_DATA? GetDeviceInfo(IntPtr deviceInfoSet, string deviceInstanceId)
{
var da = new SP_DEVINFO_DATA();
da.Initialize();
var result = SetupDiOpenDeviceInfo(deviceInfoSet, deviceInstanceId, IntPtr.Zero, 0, ref da);
if (!result) return null;
return da;
}
