如何在没有WMI的.Net中获取远程机器操作系统版本？

Question

Is there any way to get OS version of remote machine in .Net(C#)? Using of WMI is not acceptable for me.

I have IP address of remote machine :) and administrator credentials

Answer 1

based on sgmoore answer with some usings

    public string GetOsVersion(string ipAddress)
    {
        using (var reg = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, ipAddress))
        using (var key = reg.OpenSubKey(@"Software\Microsoft\Windows NT\CurrentVersion\"))
        {
            return string.Format("Name:{0}, Version:{1}", key.GetValue("ProductName"), key.GetValue("CurrentVersion"));
        }
    }

Answer 2

If you have administrator credentials for the remote machine you could use PsExec to run a command remotely to get the OS version eg

CMD /c ver

You can write a wrapper to run PsExec in C# by using the Process class.

Answer 3

Providing you have remote registry access,

 var reg = Microsoft.Win32.RegistryKey.OpenRemoteBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, ipaddress); 
 var key = reg.OpenSubKey(@"Software\Microsoft\Windows NT\CurrentVersion\");
 string version = (string) key.GetValue("CurrentVersion");
 reg.Close();

Answer 4

Reading registry values is the best solution, but sometimes, when you don't have WMI and RemoteRegedit service is not working, you can use another option -> SystemInfo.exe

So you need..

Powershell reference:

using System.Management.Automation; //Get via NuGet "Microsoft.Powershell.X.ReferenceAssemblies"
                                   //where X = your ps preferred version 
                                  //-> in this example I'm using version 5

Some method for powershell invoke:

    private static List<PSObject> InvokePowershell(string command, string remoteMachine = null)
    {
        //In powershell 5 version, we don't have to use Runspace... PoweShell class is enough
        List<PSObject> result = new List<PSObject>();

        using (PowerShell ps = PowerShell.Create())
        {
            //If remoteMachine is set, we have to change our ps command for remote invoke
            if (!string.IsNullOrWhiteSpace(remoteMachine))
            {
                command = string.Format("Invoke-Command -ComputerName {0} -ScriptBlock{{{1}}}", remoteMachine, command);
            }

            ps.AddScript(command);

            return ps.Invoke().Cast<PSObject>().ToList();
        }

    }

And simply using example:

string command = "systeminfo /fo LIST | Select-String \"System Type\", \"OS Name\", \"OS Version\"";
List<PSObject> resultOS = InvokePowershell(command, remoteMachineName);

string nameOS = resultOS.Find(obj => obj.ToString().Contains("OS Name")).ToString().Split(':').Last().Trim();
string versionOS = resultOS.Find(obj => obj.ToString().ContainsString("OS Version")).ToString().Split(null).Last().Trim();
string architectureOS = resultOS.Find(obj => obj.ToString().ContainsString("System Type")).ToString().Split(':').Last().Trim();

SystemInfo.exe has a lot more data, just type systeminfo in PS and you can choose what you want. Also.. in PS 5 there is modernization for SystemInfo via Get-ComputerInfo, but for this purpose is SystemInfo better, because has better compatibility (even PS version 2) and is faster

Answer 5

One can use pinvoke

[DllImport("Netapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int NetServerGetInfo(string serverName, int level, out IntPtr serverInfo);

See http://www.pinvoke.net/default.aspx/netapi32/netservergetinfo.html for marshalling types and http://msdn.microsoft.com/en-us/library/windows/desktop/aa370624(v=vs.85).aspx for usage