public static void EnableDevice(Func <string, bool> hardwareIdFilter, bool enable)
{
Guid nullGuid = Guid.Empty;
using (SafeDeviceInformationSetHandle infoSet = SetupDiGetClassDevs(ref nullGuid, null, IntPtr.Zero, DIGCF.ALLCLASSES))
{
CheckWin32CallSuccess(!infoSet.IsInvalid);
SP_DEVINFO_DATA devInfo = new SP_DEVINFO_DATA();
devInfo.cbSize = (UInt32)Marshal.SizeOf(devInfo);
for (uint index = 0; ; ++index)
{
CheckWin32CallSuccess(SetupDiEnumDeviceInfo(infoSet, index, ref devInfo));
string hardwareId = GetStringPropertyForDevice(infoSet, ref devInfo, SPDRP.HARDWAREID);
if ((!string.IsNullOrEmpty(hardwareId)) && (hardwareIdFilter(hardwareId)))
{
break;
}
}
SP_CLASSINSTALL_HEADER classinstallHeader = new SP_CLASSINSTALL_HEADER();
classinstallHeader.cbSize = (UInt32)Marshal.SizeOf(classinstallHeader);
classinstallHeader.InstallFunction = DIF.PROPERTYCHANGE;
SP_PROPCHANGE_PARAMS propchangeParams = new SP_PROPCHANGE_PARAMS
{
ClassInstallHeader = classinstallHeader,
StateChange = enable ? DICS.ENABLE : DICS.DISABLE,
Scope = DICS_FLAG.GLOBAL,
HwProfile = 0,
};
CheckWin32CallSuccess(SetupDiSetClassInstallParams(infoSet, ref devInfo, ref propchangeParams, (UInt32)Marshal.SizeOf(propchangeParams)));
CheckWin32CallSuccess(SetupDiChangeState(infoSet, ref devInfo));
}
}
private static string GetStringPropertyForDevice(SafeDeviceInformationSetHandle infoSet, ref SP_DEVINFO_DATA devInfo, SPDRP property)
{
RegistryValueKind regType;
UInt32 requiredSize;
if (!SetupDiGetDeviceRegistryProperty(infoSet, ref devInfo, property, out regType, null, 0, out requiredSize))
{
switch (Marshal.GetLastWin32Error())
{
case ERROR_INSUFFICIENT_BUFFER:
break;
case ERROR_INVALID_DATA:
return(string.Empty);
default:
throw new Win32Exception();
}
}
byte[] propertyBuffer = new byte[requiredSize];
CheckWin32CallSuccess(SetupDiGetDeviceRegistryProperty(infoSet, ref devInfo, property, out regType, propertyBuffer, (uint)propertyBuffer.Length, out requiredSize));
return(Encoding.Unicode.GetString(propertyBuffer));
}
private static extern bool SetupDiGetDeviceRegistryProperty(
SafeDeviceInformationSetHandle DeviceInfoSet,
[In] ref SP_DEVINFO_DATA DeviceInfoData,
SPDRP Property,
out RegistryValueKind PropertyRegDataType,
[Out] byte[] PropertyBuffer,
UInt32 PropertyBufferSize,
out UInt32 RequiredSize
);
private static extern bool SetupDiChangeState(
SafeDeviceInformationSetHandle DeviceInfoSet,
[In, Out] ref SP_DEVINFO_DATA DeviceInfoData
);
private static extern bool SetupDiSetClassInstallParams(
SafeDeviceInformationSetHandle DeviceInfoSet,
[In] ref SP_DEVINFO_DATA deviceInfoData,
[In] ref SP_PROPCHANGE_PARAMS classInstallParams,
UInt32 ClassInstallParamsSize
);
private static extern bool SetupDiEnumDeviceInfo(
SafeDeviceInformationSetHandle DeviceInfoSet,
UInt32 MemberIndex,
ref SP_DEVINFO_DATA DeviceInfoData
);
