DirectorySearcher过滤器

Question

当我运行此查询时

// Next row is used to login to AD
DirectoryEntry entry = GetEntry(domain, adminUser, adminPassword);
// Here starts the query
DirectorySearcher search = new DirectorySearcher(entry)
{
    SearchScope = SearchScope.Subtree,
    Filter = "(&" +
        "(objectClass=user)" +
        // "(distinguishedname=*OU=Ingegneria*)" +
        "(givenname=s*)" +
        "(samaccountname=*100)" +
    ")"
};
search.PropertiesToLoad.Add("distinguishedname");
SearchResultCollection result = search.FindAll();

我得到六个条目，这是正确的 如果我使用record.GetDirectoryEntry()，所有记录都有

distinguishedname: CN=xxx,OU=Utenti,OU=Ingegneria,DC=xxx,DC=xxx

无论如何，如果我删除对distinguishedname部分过滤器的评论，我会收到零条目!!
我还试图使用search.PropertiesToLoad.Add("distinguishedname");但没有运气 如何在过滤器中搜索distinguishedname？

更新
如果我尝试在过滤器中使用"(distinguishedname=*)" +，我仍然会得到六条记录，所以我想我可以搜索distinguishedname ...
的 UPDATE2：
我还尝试使用Search Active Directory for an OU using a partial path to the OU中的代码：

Filter = "(&(objectClass=user)(ou=Ingegneria))";

但我没有条目（如果删除(objectClass=user)部分，我有两个）

Answer 1

如果您只想查询，那么您应该在初始连接中绑定到该容器：

// Next row is used to login to AD
string ldapPath = "LDAP://OU=Ingegneria,DC=xxx,DC=xxx";
DirectoryEntry searchRoot = GetEntry(ldapPath, adminUser, adminPassword);

// Here starts the query
DirectorySearcher search = new DirectorySearcher(searchRoot)
{
    SearchScope = SearchScope.Subtree,
    Filter = "(&" +
        "(objectClass=user)" +
        "(givenname=s*)" +
        "(samaccountname=*100)" +
    ")"
};

search.PropertiesToLoad.Add("distinguishedname");
SearchResultCollection result = search.FindAll();

这样，您还可以大幅减少AD中需要搜索的空间，从而加快搜索速度。

如果您使用的是.NET 3.5或更高版本，则可以使用PrincipalSearcher和“按示例查询”主体进行搜索：

// create your domain context
PrincipalContext ctx = new PrincipalContext(ContextType.Domain, "YOURDOMAIN", "OU=Ingegneria,DC=xxx,DC=xxx");

// define a "query-by-example" principal - here, we search for a UserPrincipal 
UserPrincipal qbeUser = new UserPrincipal(ctx);
qbeUser.GivenName = "s*";
qbeUser.SamAccountName = "*100";

// create your principal searcher passing in the QBE principal    
PrincipalSearcher srch = new PrincipalSearcher(qbeUser);

// find all matches
foreach(var found in srch.FindAll())
{
    // do whatever here - "found" is of type "Principal"
    UserPrincipal userFound = found as UserPrincipal;

    if(userFound != null)
    {
       // do something with your user principal here....
    }
}

如果您还没有 - 绝对阅读MSDN文章Managing Directory Security Principals in the .NET Framework 3.5，该文章很好地展示了如何充分利用System.DirectoryServices.AccountManagement

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