How to get hotfix details installed on machine

Question

How to get installed hotfix and service related information in c#

pp singh · Answer

Hi All as per my understanding Win32_QuickFixEngineering class is not returning all the installed patches. is there any alternate way to get all the installed patches . Thanks

nilesh phule · Answer

Thanks Sam for ur reply i will try this

Sam Hobbs · Answer

I am sorry that posting the script was such a problem. I did not expect it to be a problem. A WMI connection string does have multiple parts. I do not understand all the parts. As best as I know the .Net Management classes do not use all the parts; it might be that some of the parts are implied and never specified by us and never shown to us. A WMI connection string will be in the format used in the script for any unmanaged code; whether the code is VBScript JavaScript C++ or any unmanaged code. It is not the language that has any relevant affect whatsoever; it is that the .Net Management classes simplifies things which can make things very confusing without an explanation and it is typical for Microsoft to not explain things like that.

Vulpes · Answer

The VBScript works fine. The problem is if I try to graft the connection string as it stands into the C# code I posted earlier: ManagementScope scope = new ManagementScope(@winmgmts:{impersonationLevel=impersonate}!\.oot\cimv2); It compiles OK but when I run it (Windows 7) I get: Unhandled Exception: System.Management.ManagementException: Invalid parameter at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStat us errorCode) at System.Management.ManagementPath.CreateWbemPath(String path) at System.Management.ManagementPath..ctor(String path) at System.Management.ManagementScope..ctor(String path) at Program.Main() However if you drop this bit: winmgmts:{impersonationLevel=impersonate}! which is probably what you'd do if you hadn't seen the VBScript code then it again works fine. So far I haven't been able to come up with an explanation for this :-/

Sam Hobbs · Answer

I said I would answer specific questions so if the response would have been more specific than  if i can get c# code  then I would have answered that with something specific. So I should have just said that the Win32_QuickFixEngineering class could be used. In this case less is more. Probably the problem you encountered with the VBScript code is the continuation. The following is a modified version. Set objWMIService = GetObject(winmgmts:{impersonationLevel=impersonate}!\.oot\cimv2) Set colQuickFixes = objWMIService.ExecQuery (Select * from Win32_QuickFixEngineering) For Each objQuickFix in colQuickFixes Wscript.Echo Description:  & objQuickFix.Description Wscript.Echo Hotfix ID:  & objQuickFix.HotFixID Next

Vulpes · Answer

I hope nilesh does read the articles as we have some good ones. However I don't think they'll tell him why the VBScript connection string doesn't work in C#. There's nothing worse when you're trying to learn new stuff than to be faced with such mysteries which is why I posted.

Sam Hobbs · Answer

I see absolutely no reason why someone would have difficulty knowing how to put the Win32_QuickFixEngineering WMI class into code that uses another WMI class. The only part of that code that needs to be converted is to use the Win32_QuickFixEngineering class in C# code that uses the Management namespace classes for WMI. I said I would help if Nilesh were to read the articles. Do you disagree that reading the articles is a good thing to do?

Vulpes · Answer

Although Sam's VBScript code works it's unlikely that you'll be able to convert it to C# as it stands because of the connection string used. I got an 'invalid parameter error' when I tried it and frankly I've no idea why :( However if you don't mind waiting a few seconds for the output this works fine on my machine: using System; using System.Management; class Program { static void Main() { string computer = .; ManagementScope scope = new ManagementScope(@\ + computer + @oot\cimv2); ManagementObjectSearcher quickFixes = new ManagementObjectSearcher(scope new ObjectQuery(Select * from Win32_QuickFixEngineering)); foreach(ManagementObject quickFix in quickFixes.Get()) { Console.WriteLine(Description: {0 -20} ID: {1} quickFix[Description] quickFix[HotFixId]); } Console.ReadKey(); } }

Sam Hobbs · Answer

You can do it if you try. How about we do this. If you read the articles in this web site about the classes in the System.Management Namespace for using WMI then I or someone will fill in the parts that you need help with. Please don't avoid trying just because you assume you cannot do it.

nilesh phule · Answer

Thanks Sambut its better if i can get c# code as i am not familiar with VBScript

Sam Hobbs · Answer

Welcome to C# Corner. You can list the hotfixes installed in a computer using WMI. You can use the .Net System.Management Namespace to use WMI; look in this web site for articles about using WMI. The following is VBscript code that does what you need; I hope this is enough for you to be able to determine how to do it using C#. strComputer = . Set objWMIService = GetObject(winmgmts: _ & {impersonationLevel=impersonate}!\ _ & strComputer & oot\cimv2) Set colQuickFixes = objWMIService.ExecQuery _ (Select * from Win32_QuickFixEngineering) For Each objQuickFix in colQuickFixes Wscript.Echo Description:  _ & objQuickFix.Description Wscript.Echo Hotfix ID:  & objQuickFix.HotFixID Next

Satyapriya Nayak · Answer

Hi Nilesh Please refer the below link http://www.ehow.com/how_5229661_install-microsoft-hotfixes.html Thanks