我只想获取其他域中的文件夹名称。当我尝试在本地获取文件夹名称时，可以获取文件夹名称。
下面是我的代码

[WebMethod]
public void getAllRootDirectoryNames(string path)
{
    string userName = "Domain\\Admin";
    string password = "Password";
    NetworkCredential theNetworkCredential = new NetworkCredential(userName, password);
    CredentialCache theNetcache = new CredentialCache();

    theNetcache.Add(new Uri(@"\\192.168.x.x"), "Basic", theNetworkCredential);

    List<GetFolderDetails> details = new List<GetFolderDetails>();
    Debug.WriteLine("GET All Root Directory Names START");

    foreach (var directoryName in new DirectoryInfo(path).GetDirectories())
    {
        GetFolderDetails fd = new GetFolderDetails();
        fd.fullFolder = directoryName.Parent.Name;
        fd.folderName = directoryName.Name;

        fd.urlPath = path + directoryName.Name;
        fd.subFolderExists = 0;

        details.Add(fd);
    }

    JavaScriptSerializer js = new JavaScriptSerializer();
    Context.Response.Write(js.Serialize(details));
}

错误信息：
System.IO.IOException:用户名或密码不正确。

更新

我尝试了下面的代码.

[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

    [WebMethod]
    public void getAllRootDirectoryNames(string path)
    {

        IntPtr tokenHandle = new IntPtr(0);
        tokenHandle = IntPtr.Zero;

        bool returnValue = LogonUser("USerName", "DomainName", "password", 2, 0, ref tokenHandle);
        WindowsIdentity ImpersonatedIdentity = new WindowsIdentity(tokenHandle);
        WindowsImpersonationContext MyImpersonation = ImpersonatedIdentity.Impersonate();

        List<GetFolderDetails> details = new List<GetFolderDetails>();

        foreach (var directoryName in new DirectoryInfo(path).GetDirectories())
        {
            GetFolderDetails fd = new GetFolderDetails();
            fd.fullFolder = directoryName.Parent.Name;
            fd.folderName = directoryName.Name;
            //fd.urlPath = directoryName.FullName;
            fd.urlPath = path + directoryName.Name;
            fd.subFolderExists = 0;

            foreach (var insideDirName in new DirectoryInfo(path + "/" + directoryName.Name + "/").GetDirectories())
            {
                fd.subFolderExists = 1;
            }
            details.Add(fd);
        }
        JavaScriptSerializer js = new JavaScriptSerializer();
        Context.Response.Write(js.Serialize(details));

        MyImpersonation.Undo();

    }

它抛出以下错误

'System.UnauthorizedAccessException' occurred in mscorlib.dll but was not handled in user code