如何检测机器是否加入域(在C#中)？

Question

如何检测计算机是否已加入Active Directory域(与工作组模式相比)？

Answer 1

如果你不需要,不要吝啬pinvoke.

参考System.DirectoryServices,然后调用:

System.DirectoryServices.ActiveDirectory.Domain.GetComputerDomain()

ActiveDirectoryObjectNotFoundException如果机器未加入域,则抛出一个.返回的Domain对象包含您要查找的Name属性.

Answer 2

您可以PInvoke到Win32 API,例如NetGetDcName,它将为非域加入的机器返回空/空字符串.

更好的是NetGetJoinInformation,它将明确告诉您机器是否未加入,在工作组或域中.

使用NetGetJoinInformation我把这个,这对我有用:

public class Test
{
    public static bool IsInDomain()
    {
        Win32.NetJoinStatus status = Win32.NetJoinStatus.NetSetupUnknownStatus;
        IntPtr pDomain = IntPtr.Zero;
        int result = Win32.NetGetJoinInformation(null, out pDomain, out status);
        if (pDomain != IntPtr.Zero)
        {
            Win32.NetApiBufferFree(pDomain);
        }
        if (result == Win32.ErrorSuccess)
        {
            return status == Win32.NetJoinStatus.NetSetupDomainName;
        }
        else
        {
            throw new Exception("Domain Info Get Failed", new Win32Exception());
        }
    }
}

internal class Win32
{
    public const int ErrorSuccess = 0;

    [DllImport("Netapi32.dll", CharSet=CharSet.Unicode, SetLastError=true)]
    public static extern int NetGetJoinInformation(string server, out IntPtr domain, out NetJoinStatus status);

    [DllImport("Netapi32.dll")]
    public static extern int NetApiBufferFree(IntPtr Buffer);

    public enum NetJoinStatus
    {
        NetSetupUnknownStatus = 0,
        NetSetupUnjoined,
        NetSetupWorkgroupName,
        NetSetupDomainName
    }

}

Answer 3

也可以使用system.net调用

string domain = System.Net.NetworkInformation.IPGlobalProperties.GetIPGlobalProperties().DomainName

如果域字符串为空,则不绑定机器.

Answer 4

ManagementObject cs;
        using(cs = new ManagementObject("Win32_ComputerSystem.Name='" + System.Environment.MachineName + "'" ))
        {
            cs.Get();
            Console.WriteLine("{0}",cs["domain"].ToString());
        }

这应该允许你获得域名.如果您是工作组的一部分而不是域,我相信它将为null或为空.

确保参考System.Management

Answer 5

只是想在VB中删除Rob的代码:

 Public Class Test
    Public Function IsInDomain() As Boolean
        Try
            Dim status As Win32.NetJoinStatus = Win32.NetJoinStatus.NetSetupUnknownStatus
            Dim pDomain As IntPtr = IntPtr.Zero
            Dim result As Integer = Win32.NetGetJoinInformation(Nothing, pDomain, status)

            If (pDomain <> IntPtr.Zero) Then
                Win32.NetApiBufferFree(pDomain)
            End If

            If (result = Win32.ErrorSuccess) Then
                If (status = Win32.NetJoinStatus.NetSetupDomainName) Then
                    Return True
                Else
                    Return False
                End If
            Else
                Throw New Exception("Domain Info Get Failed")
            End If
        Catch ex As Exception
            Return False
        End Try
    End Function
End Class
Public Class Win32
    Public Const ErrorSuccess As Integer = 0
    Declare Auto Function NetGetJoinInformation Lib "Netapi32.dll" (ByVal server As String, ByRef IntPtr As IntPtr, ByRef status As NetJoinStatus) As Integer
    Declare Auto Function NetApiBufferFree Lib "Netapi32.dll" (ByVal Buffer As IntPtr) As Integer
    Public Enum NetJoinStatus
        NetSetupUnknownStatus = 0
        NetSetupUnjoined
        NetSetupWorkgroupName
        NetSetupDomainName
    End Enum
End Class

和斯蒂芬的代码一样:

Dim cs As System.Management.ManagementObject
    Try
        cs = New System.Management.ManagementObject("Win32_ComputerSystem.Name='" + System.Environment.MachineName + "'")
        cs.Get()
        dim myDomain as string = = cs("domain").ToString
    Catch ex As Exception
    End Try

我相信只有第二个代码才能让您知道机器加入了哪个域,即使当前用户不是域成员.