Reading Device Manager's Property Fields in Windows 7/8

Question

I am developing a windows application which gives the field details --> X.

Where X is -->

Right Click My Computer >

    Properties >

          Device Manager > (select any Item - Say KeyBoard) >

                   Click it > standard PS/2 KeyBoard >

                                double Click standard PS/2 KeyBoard >

                                           click the Details Tab >

Under the Property there are various fields like Display Name , Problem Code,Parent Siblings, etc , etc?

I want to get their values . Which Windows API I can use for this. I am doing this for windows 7 as well as windows 8.I hope the API will remain the same.Also i am having 64 bit machine. This has to be true for any device whose details I wanted to know from the Device Manager.

ALso I just want to all operations - Reading and No Set (writing) so I think I will not be having any problem with violating the Admin Rights.PLease suggest.! I have added Snapshots for reference!Say for example I want to know the current State of the HID USB Complaint Mouse(D0(Active) or D2(Sleep)).

I need to Get this Power State D0.

Answer 1

It's quite easy to get the hardware information using ManagementObjectCollection.

For instance to get all properties and values from the PC processor

var win32DeviceClassName = "win32_processor";
            var query = string.Format("select * from {0}", win32DeviceClassName);

            using (var searcher = new ManagementObjectSearcher(query))
            {
                ManagementObjectCollection  objectCollection = searcher.Get();

                foreach (ManagementBaseObject managementBaseObject in objectCollection)
                {
                    foreach (PropertyData propertyData in managementBaseObject.Properties)
                    {
                        Console.WriteLine("Property:  {0}, Value: {1}", propertyData.Name, propertyData.Value);
                    }
                }



            }

The full list of WIN32 class name is available at http://msdn.microsoft.com/en-us/library/aa394084%28v=VS.85%29.aspx

Cheers.