public class LoginViewModel : SinaWeibo_Win8AppStore.Common.BindableBase

{

    private const string AppKey = "你应用的Key";

    private const string AppSecret = "你应用的Secret";

    private const string Callback = "http://JDCB.com";



    public async Task<WeiboClientV2> LoginAsync()

    {

        var weibo = new SinaWeiboClientV2.WeiboClientV2();

        weibo.Initialize(AppKey, AppSecret, Callback);



        var json = Windows.Storage.ApplicationData.Current.LocalSettings.Values["AccessToken"] as string;

        if (!string.IsNullOrEmpty(json)) 

        {

            weibo.AccessToken = await JsonConvert.DeserializeObjectAsync<OAuthAccessToken>(json);

        }

        

        if (weibo.AccessToken == null)

        {

            // 认证

            await weibo.AuthenticateAsync();

        }

        // 授权

        await weibo.AuthorizeAccessAsync(System.Threading.CancellationToken.None);

        Windows.Storage.ApplicationData.Current.LocalSettings.Values["AccessToken"] = 

            await JsonConvert.SerializeObjectAsync(weibo.CurrentAuthToken.ContextData["AccessToken"]);



        return weibo;

    }

}

var request = new SinaWeiboClientV2.StatusesUpdate.Request { Status = this.InputArea.Text };

var response = await Weibo.ExecuteStatusesUpdateAsync(request);

var fileInfo = new RestAPICore.FileUploadInfo();

fileInfo.LocalPath = ImageFile.Name;

fileInfo.StreamFactory = GetImageFile(ImageFile);

var request = new SinaWeiboClientV2.StatusesUpload.Request

{

    Status = this.InputArea.Text,

    Pic = fileInfo

};

var response = await Weibo.ExecuteStatusesUploadAsync(request);

var response = await Weibo.ExecuteStatusesFriendsTimelineAsync(request);

 if (string.IsNullOrEmpty(_maxId))

 {

     foreach (var item in response.Value.Statuses)

     {

         _statusFriendsTimeline.Add(item);

     }

 }