// enable/disable...
private static void EnableDevice(SafeDeviceInfoSetHandle handle, DeviceInfoData diData, bool enable)
{
var @params = new PropertyChangeParameters();
// The size is just the size of the header, but we've flattened the structure.
// The header comprises the first two fields, both integer.
@params.Size = 8;
@params.DiFunction = DiFunction.PropertyChange;
@params.Scope = Scopes.Global;
@params.StateChange = enable ? StateChangeAction.Enable : StateChangeAction.Disable;
var result = NativeMethods.SetupDiSetClassInstallParams(handle, ref diData, ref @params,
Marshal.SizeOf(@params));
if (result == false)
{
throw new Win32Exception();
}
result = NativeMethods.SetupDiCallClassInstaller(DiFunction.PropertyChange, handle, ref diData);
if (result == false)
{
var err = Marshal.GetLastWin32Error();
if (err == (int)SetupApiError.NotDisableable)
{
throw new ArgumentException("Device can't be disabled (programmatically or in Device Manager).");
}
else if (err >= (int)SetupApiError.NoAssociatedClass &&
err <= (int)SetupApiError.OnlyValidateViaAuthenticode)
{
throw new Win32Exception("SetupAPI error: " + ((SetupApiError)err).ToString());
}
else
{
throw new Win32Exception();
}
}
}
public static extern bool SetupDiSetClassInstallParams(SafeDeviceInfoSetHandle deviceInfoSet,
[In] ref DeviceInfoData deviceInfoData,
[In] ref PropertyChangeParameters classInstallParams,
int classInstallParamsSize);