Question

按照here概述的Google代码示例。

我已经在我自己的测试项目中复制了他们的代码示例（在Visual Studio Express 2013中使用MVC 4模板），我无法运行该项目，因为我收到了这些错误：

错误1因为＆＃39; Google.Apis.Sample.MVC4.Controllers.HomeController.IndexAsync（System.Threading.CancellationToken）＆＃39;是一个返回＆＃39; Task＆＃39;的异步方法，返回关键字后面不能跟一个对象表达式。你打算回归＆＃39;任务＆＃39;？ f：\ users \ sausages \ documents \ visual studio 2013 \ Projects \ GooglePOC \ GooglePOC \ Controllers \ googleAnalytics.cs 33 17 GooglePOC

错误2因为＆＃39; Google.Apis.Sample.MVC4.Controllers.HomeController.IndexAsync（System.Threading.CancellationToken）＆＃39;是一个返回＆＃39; Task＆＃39;的异步方法，返回关键字后面不能跟一个对象表达式。你打算回归＆＃39;任务＆＃39;？ f：\ users \ sausages \ documents \ visual studio 2013 \ Projects \ GooglePOC \ GooglePOC \ Controllers \ googleAnalytics.cs 37 17 GooglePOC

这是它所抱怨的代码块：

using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Web.Mvc;

using Google.Apis.Auth.OAuth2.Mvc;
using Google.Apis.Drive.v2;
using Google.Apis.Services;

using Google.Apis.Sample.MVC4;

namespace Google.Apis.Sample.MVC4.Controllers
{
    public class HomeController : Controller
    {
        public async Task IndexAsync(CancellationToken cancellationToken)
        {
            var result = await new AuthorizationCodeMvcApp(this, new AppFlowMetadata()).
                AuthorizeAsync(cancellationToken);

            if (result.Credential != null)
            {
                var service = new DriveService(new BaseClientService.Initializer
                {
                    HttpClientInitializer = result.Credential,
                    ApplicationName = "ASP.NET MVC Sample"
                });

                // YOUR CODE SHOULD BE HERE..
                // SAMPLE CODE:
                var list = await service.Files.List().ExecuteAsync();
                ViewBag.Message = "FILE COUNT IS: " + list.Items.Count();
                return View();
            }
            else
            {
                return new RedirectResult(result.RedirectUri);
            }
        }
    }
}

Answer 1

 public async Task<ActionResult> IndexAsync(CancellationToken cancellationToken)

为我工作

Google API＆amp;的OAuth2

1 个答案: