CODEWITHSUNDEEP
c#usbwmiwmi-query
0___________
0___________

Reputation: 67476

Get WMI properties

I am quite novice in c# but unfortunately have to discover usb ports VIDs and PIDs.

ObjectQuery objectQuery = new ObjectQuery("SELECT * FROM Win32_PnPEntity WHERE ConfigManagerErrorCode = 0");
ManagementObjectSearcher comPortSearcher = new ManagementObjectSearcher(connectionScope, objectQuery);

using (comPortSearcher)
{
    string caption = null;
    foreach (ManagementObject obj in comPortSearcher.Get())
    {
        if (obj != null)
        {
            object captionObj = obj["Caption"];
            // Rest of code
        }
    }
}

I actually can't understand whre this key "Caption" comes from. How can I know what else keys are hidden in this object? It is very unclear for me. How can I get the list of other of such a "Keys"

Upvotes: 1

Views: 1316

Answers (1)

Gilad Green
Gilad Green

Reputation: 37299

This code accesses by WMI different properties. Specifically Win32_PnPEntity class represents the properties of a Plug and Play device.

See more on MSDN about Win32_PnPEntity class and it's properties:

[Dynamic, Provider("CIMWin32"), UUID("{FE28FD98-C875-11d2-B352-00104BC97924}"), AMENDMENT]
class Win32_PnPEntity : CIM_LogicalDevice
{
  uint16   Availability;
  string   Caption;
  string   ClassGuid;
  string   CompatibleID[];
  uint32   ConfigManagerErrorCode;
  /* Rest of properties... */
};

The ManagementObjectSearcher is one way to retrieve information of a WMI Class

Upvotes: 1

Related Questions