public extern static bool SetupDiGetDeviceRegistryProperty(
[In] IntPtr DeviceInfo,
[In] SP_DEVINFO_DATA DeviceInfoData,
[In] DeviceRegistryProperty Property,
[In, Out] ref RegistryType PropertyRegDataType,
[In, Out] StringBuilder PropertyBuffer,
[In] UInt32 PropertyBufferSize,
[In, Out] ref UInt32 RequiredSize);
private static string TryGetDeviceRegistryProperty(IntPtr deviceInfoSet, SP_DEVINFO_DATA deviceInfo, DeviceRegistryProperty property)
{
try
{
return(GetDeviceRegistryProperty(deviceInfoSet, deviceInfo, property));
}
catch (Win32Exception)
{
}
return(null);
}
private static string GetDeviceRegistryProperty(IntPtr deviceInfoSet, SP_DEVINFO_DATA deviceInfo, DeviceRegistryProperty property)
{
const int BufferSize = 2048;
IntPtr propertyBufferPtr = Marshal.AllocHGlobal(BufferSize);
try
{
if (NativeMethods.SetupDiGetDeviceRegistryProperty(
deviceInfoSet,
ref deviceInfo,
property,
out RegistryValueKind valueKind,
propertyBufferPtr,
BufferSize,
out uint propertySize))
{
if (propertySize > 0 && valueKind == RegistryValueKind.String)
{
return(Marshal.PtrToStringUni(propertyBufferPtr));
}
}
else
{
throw new Win32Exception();
}
}
private static string GetDeviceRegistryProperty(IntPtr hDeviceInfo, SP_DEVINFO_DATA deviceInfoData, DeviceRegistryProperty propertyType)
{
RegistryType propertyRegistryType = RegistryType.REG_NONE;
StringBuilder propertyBuffer = new StringBuilder(512);
UInt32 sizeRequired = 0;
bool result = SetupDi.SetupDiGetDeviceRegistryProperty(
hDeviceInfo,
deviceInfoData,
propertyType,
ref propertyRegistryType,
propertyBuffer,
(UInt32)propertyBuffer.Capacity,
ref sizeRequired);
if ((result == true) & (propertyRegistryType == RegistryType.REG_SZ))
{
return(propertyBuffer.ToString());
}
else
{
return(null);
}
}
