Twitter 林克托维特支票授权书

我有这个工作代码：

public AspNetAuthorizer Authoriser { get; set; }

protected async void Page_Load(object sender, EventArgs e)
{
    var currentUser = v2.Membership.Functions.GetLoggedInAsUser();

    Authoriser = v3.Twitter.Auth.GetUserAuthorizer(currentUser.UserID,
        v3.Arcade.Settings.TwitterScirraArcadeAppAppName, v3.Arcade.Settings.TwitterScirraArcadeAppConsumerKey,
        v3.Arcade.Settings.TwitterScirraArcadeAppConsumerSecret);

    if (!Page.IsPostBack && Request.QueryString["oauth_token"] != null)
    {
        await Authoriser.CompleteAuthorizeAsync(Request.Url);
        var credentials = Authoriser.CredentialStore;
        v3.Twitter.Auth.SaveAuthorisationDetails(currentUser.UserID,
            v3.Arcade.Settings.TwitterScirraArcadeAppAppName, credentials.OAuthToken, credentials.OAuthTokenSecret,
            credentials.ScreenName);
    }
    else
    {
        if (!Authoriser.CredentialStore.HasAllCredentials())
        {
            await Authoriser.BeginAuthorizeAsync(new Uri("https://127.0.0.1/newarcade/twitterpopup.aspx"));
        }
    }
}

如果未存储授权，它将重定向到Twitter身份验证请求。否则，它将在页面上继续

---

我面临的问题是，当用户通过其Twitter帐户撤销对应用程序的访问时，我如何在此页面上检测到应用程序不再具有为用户发布推文的权限，并且需要重新授权？

您可以查询VerifyCredentials：

        try
        {
            var verifyResponse =
                await
                    (from acct in twitterCtx.Account
                     where acct.Type == AccountType.VerifyCredentials
                     select acct)
                    .SingleOrDefaultAsync();

            if (verifyResponse != null && verifyResponse.User != null)
            {
                User user = verifyResponse.User;

                Console.WriteLine(
                    "Credentials are good for {0}.",
                    user.ScreenNameResponse); 
            }
        }
        catch (TwitterQueryException tqe)
        {
            Console.WriteLine(tqe.Message);
        }

如果失败，您可以通过删除用户的凭据密钥并仅使用ConsumerKey/ConsumerCret进行授权来强制授权。这将使用户进入Twitter页面，再次授权您的应用程序。然后，您可以重新保存这些用户凭据，以防它们发生更改