{"id":250,"date":"2006-03-20T14:56:32","date_gmt":"2006-03-20T13:56:32","guid":{"rendered":"http:\/\/www.craigmurphy.com\/blog\/?p=250"},"modified":"2006-03-22T08:19:46","modified_gmt":"2006-03-22T07:19:46","slug":"shutting-down-a-pc-using-wmi-and-c","status":"publish","type":"post","link":"http:\/\/www.craigmurphy.com\/blog\/?p=250","title":{"rendered":"Shutting down a PC using WMI and C#"},"content":{"rendered":"

I found myself needing to re-work some code that was originally part of my WMI presentation<\/a> from 2003.<\/p>\n

After a little bit of re-writing and a little bit of searching, I re-wrote my original Delphi routine, which looked like this:<\/p>\n

[code lang=”Pascal”]
\n[Delphi]
\nprocedure TfrmMain.btnShutdownClick(Sender: TObject);
\nvar
\n wmiLocator: TSWbemLocator;
\n wmiServices: ISWbemServices;
\n wmiObjectSet: ISWbemObjectSet;
\n wmiObject: ISWbemObject;
\n Enum: IEnumVariant;
\n ovVar: OleVariant;
\n lwValue: LongWord;<\/p>\n

begin
\n wmiLocator := TSWbemLocator.Create(self);
\n wmiServices := wmiLocator.ConnectServer( edtComputer.Text, ‘root\\cimv2’, edtUser.Text, edtPass.Text, ”, ”, 0, nil);<\/p>\n

wmiServices.Security_.Privileges.Add(wbemPrivilegeShutdown, True);
\n wmiObjectSet := wmiServices.ExecQuery(‘SELECT * FROM Win32_OperatingSystem WHERE Primary=True’, ‘WQL’, wbemFlagReturnImmediately, nil);
\n Enum := (wmiObjectSet._NewEnum) as IEnumVariant;
\n while (Enum.Next(1, ovVar, lwValue) = S_OK) do begin
\n wmiObject := IUnknown(ovVar) as SWBemObject;
\n wmiObject.ExecMethod_(‘Shutdown’, nil, 0, nil);
\n end;<\/p>\n

wmiLocator.Free;
\nend;
\n[\/code]<\/p>\n

…it now looks like this:<\/p>\n

[code lang=”C’#”]
\n[C#]
\n using System.Management; <\/p>\n

public enum ShutDown
\n {
\n LogOff = 0,
\n Shutdown = 1,
\n Reboot = 2,
\n ForcedLogOff = 4,
\n ForcedShutdown = 5,
\n ForcedReboot = 6,
\n PowerOff = 8,
\n ForcedPowerOff = 12
\n }<\/p>\n

…<\/p>\n

ManagementClass W32_OS = new ManagementClass(“Win32_OperatingSystem”);
\n ManagementBaseObject inParams, outParams;
\n int result;<\/p>\n

W32_OS.Scope.Options.EnablePrivileges = true;
\n foreach(ManagementObject obj in W32_OS.GetInstances())
\n {
\n inParams = obj.GetMethodParameters(“Win32Shutdown”);
\n inParams[“Flags”] = ForcedShutdown;
\n inParams[“Reserved”] = 0;<\/p>\n

outParams = obj.InvokeMethod(“Win32Shutdown”, inParams, null);
\n result = Convert.ToInt32(outParams[“returnValue”]);
\n if (result !=0) throw new Win32Exception(result);
\n }
\n[\/code]<\/p>\n

Here’s a link<\/a> to more information about this on the MSDN.<\/p>\n

[job for tonight – sort out this code format…once and for all]<\/em><\/del><\/p>\n","protected":false},"excerpt":{"rendered":"

I found myself needing to re-work some code that was originally part of my WMI presentation from 2003. After a little bit of re-writing and a little bit of searching, I re-wrote my original Delphi routine, which looked like this: [code lang=”Pascal”] [Delphi] procedure TfrmMain.btnShutdownClick(Sender: TObject); var wmiLocator: TSWbemLocator; wmiServices: ISWbemServices; wmiObjectSet: ISWbemObjectSet; wmiObject: ISWbemObject; … Continue reading Shutting down a PC using WMI and C#<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-250","post","type-post","status-publish","format-standard","hentry","category-net"],"_links":{"self":[{"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/250","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=250"}],"version-history":[{"count":0,"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/250\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=250"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.craigmurphy.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}