未能从程序集加载类型“Google.Apis.Requests.IErrorResponseHand

我在.NET谷歌验证API日历。我从这个链接复制代码：刷新令牌到期时间谷歌日历未能从程序集加载类型“Google.Apis.Requests.IErrorResponseHandler“Google.Apis，版本= 1.6.0.16897，文化=中立，公钥=空”

这里是我的代码：

private CalendarService CreateService(string token)
    {
        //KeyValuePair<string, string> credentials = Ninject.Web.Common.Get3LOCredentials();
        var provider = new NativeApplicationClient(GoogleAuthenticationServer.Description, this.clientID, this.ClientSecret);
        //provider.ClientIdentifier = clientID;
        //provider.ClientSecret = clientSecret;
        var auth = new Google.Apis.Authentication.OAuth2.OAuth2Authenticator<NativeApplicationClient>(provider, (p) => GetAuthorization(provider, token));
        CalendarService service = new CalendarService(new BaseClientService.Initializer()
        {
            Authenticator = auth,
            ApiKey = ConfigurationManager.AppSettings[this.APIkey].ToString(),
            GZipEnabled = false
        });
        return service;
    }

    private static IAuthorizationState GetAuthorization(NativeApplicationClient arg, String Refreshtoken)
    {
        IAuthorizationState state = new AuthorizationState(new[] { CalendarService.Scopes.Calendar.GetStringValue() });
        state.Callback = new Uri(NativeApplicationClient.OutOfBandCallbackUrl);
        state.RefreshToken = Refreshtoken;
        return state;
    }

Answer 1:

你使用软件包管理器安装API？

而且起，你要申请访问每次还是要保存refreshtoken这样就可以得到一个未过期的访问令牌，当你做以下电话？

Answer 2:

我通过卸载和重新安装NuGet包“google.apis.auth”解决了这个问题。这是因为安装了多个版本。