IADsLargeInteger的名称空间 [英] The namespace of IADsLargeInteger

问题描述

我正在寻找将 COM对象转换为 DateTime 的方法，我看到了很多有关
这个问题的文章（像这样）一个- https://msdn.microsoft.com /en-us/library/ms180872(v=vs.80).aspx
和这个
如何使用C＃读取 uSNChanged属性）

I looking for way to convert COM object to DateTime and I saw a lot of articles about this problem (like this one -https://msdn.microsoft.com/en-us/library/ms180872(v=vs.80).aspx and this one- How to read "uSNChanged" property using C# )

这些文章中讨论了如何从接口 IADsLargeInteger 使用对象。

However, all of those articles talking about using an object from the interface IADsLargeInteger.

我试图寻找该对象的命名空间界面，我只是找不到任何线索。

I tried to look for the namespace of this interface and I just couldn't find any clue.

推荐答案

下面是一个代码示例，其中包括您需要从AD转换的所有内容键入DateTime：

Here is a code sample including everything you need to convert from the AD type to a DateTime:

using System.DirectoryServices;
using System.DirectoryServices.AccountManagement;
using ActiveDs; // Namespace added via ref to C:\Windows\System32\activeds.tlb

private DateTime? getLastLogin(DirectoryEntry de)
{
    Int64 lastLogonThisServer = new Int64();

    if (de.Properties.Contains("lastLogon"))
    {
        if (de.Properties["lastLogon"].Value != null)
        {
            try
            {
                IADsLargeInteger lgInt =
                (IADsLargeInteger) de.Properties["lastLogon"].Value;
                lastLogonThisServer = ((long)lgInt.HighPart << 32) + lgInt.LowPart;

                return DateTime.FromFileTime(lastLogonThisServer);
            }
            catch (Exception e)
            {
                return null;
            }
        }
    }
    return null;
}

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