ParentDeviceId Property
ParentDeviceId
A unique identifier corresponding to the parent USB composite device, if available.
public string ParentDeviceId { get; protected set; }Property Value
| Type | Description |
|---|---|
| System.String |
Implements
Remarks
Certain devices that this SDK works with, like the YubiKey, are presented to the operating system as a composite device. This means that, to the operating system, multiple devices may be detected even though you have only plugged in one physical device. OSes that do this still expose a single "composite" device in their device tree. This is the common parent across all of the sub-devices.
Keeping track of this information, if available, can greatly increase the SDK's performance when it attempts to reconstruct the single, composite device out of all of the sub-devices. This isn't always possible, however, as the OS services that we use to enumerate the sub-devices don't always provide much information about its parent device. macOS and Windows 7, for example, cannot provide parent information for smart card devices. In those cases, we'll have to make do and attempt to match these devices some other way.