C# - 查找 Active Directory 用户的所有电子邮件地址

问题描述

我正在尝试获取与给定 AD 用户关联的所有电子邮件地址.

I'm trying to get all the email addresses associated to a given AD user.

对于用户，我拥有域和登录名(例如 DOMAINUserName)，并且我的 AD 将电子邮件地址存储在:

For the user I have the domain and the login name (ex. DOMAINUserName) and I the AD is storing the email addresses in:

1. 邮件属性.
2. 在 proxyAddresses 属性中.

到目前为止，我不知道使用什么 C# API 来连接到 AD，以及如何由用户正确过滤以获取所有电子邮件地址.我使用的是 .NET 3.5.

So far, I don't know what C# API to use to connect to the AD, and how to properly filter by the user to fetch all the email addresses. I'm using .NET 3.5.

谢谢.

推荐答案

这是使用 System.DirectoryServices 命名空间.

Here's a possible solution using various classes in the System.DirectoryServices namespace.

string username = "username";
string domain = "domain";

List<string> emailAddresses = new List<string>();

PrincipalContext domainContext = new PrincipalContext(ContextType.Domain, domain);
UserPrincipal user = UserPrincipal.FindByIdentity(domainContext, username);

// Add the "mail" entry
emailAddresses.Add(user.EmailAddress);

// Add the "proxyaddresses" entries.
PropertyCollection properties = ((DirectoryEntry)user.GetUnderlyingObject()).Properties;
foreach (object property in properties["proxyaddresses"])
{
   emailAddresses.Add(property.ToString());
}

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