WMI in .Net

It’s quite easy to work with WMI in .net. Follow these steps to get details of Win32_VideoController.

Namespace to use is System.Management.

1. Create a management class object.

[sourcecode language=’cpp’]Dim MngClass As New ManagementClass(“Win32_VideoController”)[/sourcecode]

2. Create a management object class collection instance and fill out this collection likewise…

[sourcecode language=’vb’]Dim MngObjCollection As ManagementObjectCollection = MngClass.GetInstances

‘ Now we need to iterate through this collection object likewise…
For Each MngObj As ManagementObject In MngObjCollection
Dim PropCollection As PropertyDataCollection = MngObj.Properties
For Each PropData As PropertyData In PropCollection
‘ Read in properties of video controller.
Next PropData
Next MngObj[/sourcecode]

Well we are done, quite easy isn’t it? Do this in C++ and you will be breaking your head and fingers.

Change the name of the above WMI class to something else and it will work in the same way except for properties of the WMI class object since each class has different properties.

Look up MSDN for more details on the properties of WMI classes. As a homework try fetching properties of “Win32_Processor”.

Download a sample application which extensively uses WMI to fetch details of remote machines. There are two exe’s and one dll. Put them in the same directory and run both exe’s. The one with a blue icon is the client application and the one with a red icon is the server application. You can run these applications locally or as remote ones putting the client application in a remote machine. See the power of WMI in full flow.

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