asp.net - 从 Active Directory 获取电子邮件地址

Question

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我能够获取全名值 我正在尝试从 Active Directory 检索电子邮件地址，但在我使用 Windows 身份验证的 ASP.Net Web 窗体项目中使用以下代码:

Dim wi As System.Security.Principal.WindowsIdentity = System.Security.Principal.WindowsIdentity.GetCurrent()
Dim a As String() = wi.Name.Split(New Char() {"\"c}) '' Context.User.Identity.Name.Split('\')

Dim ADEntry As System.DirectoryServices.DirectoryEntry = New System.DirectoryServices.DirectoryEntry(Convert.ToString("WinNT://" + a(0) + "/" + a(1)))
Dim Name As String = ADEntry.Properties("FullName").Value.ToString()
Dim Email As String = ADEntry.Properties("mail").Value.ToString()

当我到达尝试检索电子邮件地址的代码行时，我收到“未设置对象实例的对象引用”。错误。我试过使用电子邮件地址、电子邮件。我认为问题在于我只是使用了错误的关键字。我能够检索 FullName 值。

Answer 1

感谢Davide Piras谁发给我this link ，我找到了一个合适的解决方案:

Dim wi As System.Security.Principal.WindowsIdentity = System.Security.Principal.WindowsIdentity.GetCurrent()
Dim a As String() = wi.Name.Split(New Char() {"\"c}) '' Context.User.Identity.Name.Split('\')

Dim dc As PrincipalContext = New PrincipalContext(ContextType.Domain, "DomainName")
Dim adUser As UserPrincipal = UserPrincipal.FindByIdentity(dc, a(1))
Dim Email As String = adUser.EmailAddress