类文档here http://msdn.microsoft.com/en-us/library/aa394391(VS.85).aspx。 InstalledOn 属性应该具有安装修复程序时的时间戳（好吧，废话）。但文档没有说明格式是什么。我得到一些难以理解的东西，但它显然意味着什么。 “01ca56402c180b70”是一个非常明显的十六进制数字，但是是什么？
还有一件事：为什么前几项看起来像 GUID？他们的意思是什么？
Da code:
ManagementScope scope;
ConnectionOptions options = new ConnectionOptions();
options.Username = tbUsername.Text;
options.Password = tbPassword.Password;
options.Authority = String.Format("ntlmdomain:{0}", tbDomain.Text);
scope = new ManagementScope(String.Format("\\\\{0}\\root\\cimv2", tbHost.Text), options);
scope.Connect();
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, new ObjectQuery("SELECT * FROM Win32_QuickFixEngineering"));
foreach (ManagementObject queryObj in searcher.Get())
{
wmiResults.Text += String.Format("{0} <{1}>: {2} (Installed {3} by '{4}')",
queryObj["HotFixID"],
queryObj["Caption"],
queryObj["Description"],
queryObj["InstalledOn"],
queryObj["InstalledBy"]
);
}
达输出：
{87796B93-94D0-A0C7-EFC4-FF34426626BC} <>: (Installed 20090513 by '')
{D93F9C7C-AB57-44C8-BAD6-1494674BCAF7} <>: (Installed 20090928 by '')
{9AD2FB23-AC50-435C-8ABC-8119D29CF0C1} <>: (Installed 20090929 by '')
{62D3B51B-F56D-40F0-8C32-EAB204ADF752} <>: (Installed 20090513 by '')
{EC038F86-AC1E-4C30-AEFB-B6B8A3922DCD} <>: (Installed 20091116 by '')
{D1219E04-62FF-49D0-804C-A27F968E50A5} <>: (Installed 20091116 by '')
{1DE62EBA-6684-2483-3409-CEBADBF8A31E} <>: (Installed 20090513 by '')
{8CA89076-2A6D-42C3-AA24-F203C9E5DBF3} <>: (Installed 20090513 by '')
{F5E29D9D-519A-36C7-87E3-9A22A8180B1B} <>: (Installed 20091016 by '')
KB948609 <http://support.microsoft.com/?kbid=948609>: Update (Installed 01c9d3cb9b46a87c by 'S-1-5-21-2756995651-916083937-3196967445-500')
KB948610 <http://support.microsoft.com/?kbid=948610>: Update (Installed 01c9d3cb9b4909dd by 'S-1-5-21-2756995651-916083937-3196967445-500')
KB951978 <http://support.microsoft.com/?kbid=951978>: Update (Installed 01ca408d02d6cdbe by 'S-1-5-18')
KB952287 <http://support.microsoft.com/?kbid=952287>: Hotfix (Installed 01ca408d02d925c8 by 'S-1-5-18')
KB954155 <http://support.microsoft.com/?kbid=954155>: Security Update (Installed 01ca56402c10e74d by 'S-1-5-18')
KB955020 <http://support.microsoft.com/?kbid=955020>: Update (Installed 01ca408d02d925c8 by 'S-1-5-18')
KB955302 <http://support.microsoft.com/?kbid=955302>: Update (Installed 01ca408d02db7dd2 by 'S-1-5-18')
KB956250 <http://support.microsoft.com>: Update (Installed 01ca66e5e6fc6b70 by 'S-1-5-21-501351562-481299158-1019697294-11592')
KB958481 <http://support.microsoft.com/?kbid=958481>: Update (Installed 01ca408d02db7dd2 by 'S-1-5-18')
KB958483 <http://support.microsoft.com/?kbid=958483>: Update (Installed 01ca408d02ddd5dc by 'S-1-5-18')
KB958644 <http://support.microsoft.com/?kbid=958644>: Security Update (Installed 01ca57f748bfe059 by 'S-1-5-21-2756995651-916083937-3196967445-500')
KB958869 <http://support.microsoft.com/?kbid=958869>: Security Update (Installed 01ca56402c10e74d by 'S-1-5-18')
KB959772 <http://support.microsoft.com/?kbid=959772>: Update (Installed 01ca408d02ddd5dc by 'S-1-5-18')
KB968389 <http://support.microsoft.com/?kbid=968389>: Update (Installed 01ca408d02e02de6 by 'S-1-5-18')
KB968816 <http://support.microsoft.com/?kbid=968816>: Security Update (Installed 01ca45c1ebfd041f by 'S-1-5-18')
KB971486 <http://support.microsoft.com/?kbid=971486>: Security Update (Installed 01ca56402c1348ae by 'S-1-5-18')
KB972594 <http://support.microsoft.com/?kbid=972594>: Security Update (Installed 01ca408d02e02de6 by 'S-1-5-18')
KB973525 <http://support.microsoft.com/?kbid=973525>: Security Update (Installed 01ca56402c1348ae by 'S-1-5-18')
KB974455 <http://support.microsoft.com/?kbid=974455>: Security Update (Installed 01ca56402c15aa0f by 'S-1-5-18')
KB974571 <http://support.microsoft.com/?kbid=974571>: Security Update (Installed 01ca56402c15aa0f by 'S-1-5-18')
KB975467 <http://support.microsoft.com/?kbid=975467>: Security Update (Installed 01ca56402c15aa0f by 'S-1-5-18')
KB975517 <http://support.microsoft.com/?kbid=975517>: Security Update (Installed 01ca56402c180b70 by 'S-1-5-18')
http://blogs.msdn.com/oldnewthing/archive/2003/09/05/54806.aspx http://blogs.msdn.com/oldnewthing/archive/2003/09/05/54806.aspx提供有关解释不同类型时间戳的信息。看起来你有一个 Win32FILETIME http://msdn.microsoft.com/en-us/library/ms724284(VS.85).aspx.
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