C# Google日历API C凭据引发异常

我将遵循本教程： 我的代码：

问题是，这部分代码引发了一个异常：

{无法加载文件或程序集 'Microsoft.Threading.Tasks.Extensions.Desktop，版本=1.0.16.0， 区域性=中性，PublicKeyToken=b03f5f7f11d50a3a'或其 依赖项。系统找不到该文件 指定：Microsoft.Threading.Tasks.Extensions.Desktop， 版本=1.0.16.0，区域性=中性，PublicKeyToken=b03f5f7f11d50a3a}

注：虽然很可能与这个问题无关，但当在google上设置我的项目以获取凭据时，我选择了Installed Application->Other，因为我假设这就是控制台应用程序

编辑：添加似乎解决了这个问题。现在我剩下的代码是：

 var service = new CalendarService(new BaseClientService.Initializer()
    {
        HttpClientInitializer = credential,
        ApplicationName = "Calendar API Test"
    });

    var x = service.Events.List("actualcalendarid").OauthToken;

    Console.WriteLine(x);
    Console.ReadLine();

---

返回一个空行，即使当我运行应用程序时，它确实请求访问我的日历等。我忘了什么吗？

确保您已将所有引用添加到项目中

需要使用NuGet安装以下内容

-Install-Package Google.Apis.Calendar.v3 –Pre
-Install-Package Google.Apis -Pre
-Install-Package DotNetOpenAuth -Version 4.3.4.13329
-Install-Package Google.Apis.Auth.Mvc -Pre

并将引用Microsoft.Threading.Tasks.Extensions添加到项目中

编辑： 您没有检索数据，因为您没有执行查询

var result = service.Events.List("primary").Execute();


    private async Task<UserCredential> GetCredential()
    {
        UserCredential credential = null;
        try
        {
            using(var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
            {
                credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    new[] { CalendarService.Scope.Calendar },
                    "user", CancellationToken.None, new FileDataStore(""));
            }
        }
        catch (IOException ioe)
        {
            Debug.WriteLine("IOException" + ioe.Message);
        }
        catch (Exception ex)
        {
            Debug.WriteLine("Exception" + ex);
        }
        return credential;
    }

    private CalendarService GetCalenderService(UserCredential credential)
    {
        CalendarService service = new CalendarService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = "Calendar Sample"
            });
        return service;
    }

    private Events GetEvent(string CalendarId)
    {
        var query = this.Service.Events.List(CalendarId);
        query.ShowDeleted = false;
        query.SingleEvents = true;
        return query.Execute();
    }

---

添加似乎解决了这个问题。现在还有另一个问题，尽管我已经编辑了我的post，但您是否可以尝试service.Events.Listprimary.Execute；恐怕没有这样的执行方法，isI已经用我正在使用的代码更新了我的答案。

var result = service.Events.List("primary").Execute();


    private async Task<UserCredential> GetCredential()
    {
        UserCredential credential = null;
        try
        {
            using(var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
            {
                credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    new[] { CalendarService.Scope.Calendar },
                    "user", CancellationToken.None, new FileDataStore(""));
            }
        }
        catch (IOException ioe)
        {
            Debug.WriteLine("IOException" + ioe.Message);
        }
        catch (Exception ex)
        {
            Debug.WriteLine("Exception" + ex);
        }
        return credential;
    }

    private CalendarService GetCalenderService(UserCredential credential)
    {
        CalendarService service = new CalendarService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = "Calendar Sample"
            });
        return service;
    }

    private Events GetEvent(string CalendarId)
    {
        var query = this.Service.Events.List(CalendarId);
        query.ShowDeleted = false;
        query.SingleEvents = true;
        return query.Execute();
    }