C# 如何将 Active Directory pwdLastSet 转换为日期/时间
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How to convert Active Directory pwdLastSet to Date/Time
提问by software is fun
public static string GetProperty(SearchResult searchResult, string PropertyName)
{
if (searchResult.Properties.Contains(PropertyName))
{
return searchResult.Properties[PropertyName][0].ToString();
}
else
{
return string.Empty;
}
}
The above method works great for most Active Directory properties except those that are related to date/time such as pwdLastSet, maxPwdAge, etc.
上述方法适用于大多数 Active Directory 属性，但与日期/时间相关的属性除外，例如 pwdLastSet、maxPwdAge 等。
My question is how to I get the pwdLastSet to a human readable datetime (like 8/13/2013 or August 13, 2013, etc)
我的问题是如何将 pwdLastSet 设置为人类可读的日期时间（例如 8/13/2013 或 2013 年 8 月 13 日等）
I've tries this but it threw exceptions
我试过这个，但它抛出了异常
public static Int64 ConvertADSLargeIntegerToInt64(object adsLargeInteger)
{
var highPart = (Int32)adsLargeInteger.GetType().InvokeMember("HighPart", System.Reflection.BindingFlags.GetProperty, null, adsLargeInteger, null);
var lowPart = (Int32)adsLargeInteger.GetType().InvokeMember("LowPart", System.Reflection.BindingFlags.GetProperty, null, adsLargeInteger, null);
return highPart * ((Int64)UInt32.MaxValue + 1) + lowPart;
}
I am using the following code to get the time as an Int64
我使用以下代码来获取时间作为 Int64
Int64 passwordLastSet = ConvertADSLargeIntegerToInt64(objResult.Properties["pwdLastSet"][0]);
Then I plan on using the DateTime(Int64) constructor to create a DateTime
然后我打算使用 DateTime(Int64) 构造函数来创建一个 DateTime
采纳答案by Matt Johnson-Pint
According to the MSDN documentation:
根据MSDN 文档：
This value is stored as a large integer that represents the number of 100 nanosecond intervals since January 1, 1601 (UTC).
此值存储为一个大整数，表示自 1601 年 1 月 1 日 (UTC) 以来 100 纳秒间隔的数量。
This aligns perfectly with DateTime.FromFileTimeUtc, as described here.
这与 完全一致DateTime.FromFileTimeUtc，如此处所述。
And I'm not sure why you feel the need to do the low level manipulation of the integer. I think you could just cast it.
而且我不确定为什么您觉得需要对整数进行低级操作。我想你可以投它。
So just do:
所以只需这样做：
long value = (long)objResult.Properties["pwdLastSet"][0];
DateTime pwdLastSet = DateTime.FromFileTimeUtc(value);
回答by almaceleste
You can get the last password set date of a directory user in human readable form as easy as pie. To achieve this you can use nullable LastPasswordSetproperty of UserPrincipalclass from System.DirectoryServices.AccountManagementnamespace.
您可以像馅饼一样简单地以人类可读的形式获取目录用户的最后一次密码设置日期。为了实现这一点，您可以使用命名空间LastPasswordSet中UserPrincipal类的可为空属性System.DirectoryServices.AccountManagement。
If User must change password at next logonoption is checked then LastPasswordSetproperty returns nullvalue. Otherwise it returns the last date and time the password was set in type DateTime.
如果User must change password at next logon选项被选中，则LastPasswordSet属性返回null值。否则，它返回在 type 中设置密码的最后日期和时间DateTime。
using(PrincipalContext context = new PrincipalContext(ContextType.Domain))
{
UserPrincipal user = UserPrincipal.FindByIdentity(context, IdentityType.SamAccountName, Username);
//? - to mark DateTime type as nullable
DateTime? pwdLastSet = (DateTime?)user.LastPasswordSet;
...
}
