如何从ExecuteAsync（）方法获得字段

Question

我熟悉在Google云端硬盘中创建文件夹，但我正在研究如何使用异步方法执行此操作。然而，这样做，我不知道如何获得我明确添加到我想要返回的字段的字段。

我下面的代码：

private Task<Google.Apis.Drive.v3.Data.File> CreateGoogleDriveFolderAsync(DriveService service, string foldername, string parent_id = null) 
{ 
    IList<string> parent_ids = new List<string>(); 

    Google.Apis.Drive.v3.Data.File folder = new Google.Apis.Drive.v3.Data.File 
    { 
     Name = foldername 
     , MimeType = "application/vnd.google-apps.folder" 
     , Description = "Client Name: blah\nUser: Rudy\n" 
    }; 

    var insert = service.Files.Create(folder); 

    // The field I'd like to get somewhere. 
    insert.Fields = "id"; 

    var task = insert.ExecuteAsync(); 

    task.ContinueWith(t => 
    { 
     // NotOnRanToCompletion - this code will be called if the upload fails 
     Console.WriteLine("Failed to create folder \"{0}\": " + t.Exception, foldername); 
    }, TaskContinuationOptions.NotOnRanToCompletion); 
    task.ContinueWith(t => 
    { 
     // I'd like a way to access "id" from my insert execution. 
     log.insertLogging(foldername, "Directory Created"); 
    }); 

    return task; 
} 

Answer 1

使用的例子从documentation，await任务，并获取文件回来从那里，你应该能够访问它的属性

private async Task<File> CreateGoogleDriveFolderAsync(DriveService driveService, string foldername) { 
    var metadata = new File() 
    { 
     Name = foldername, 
     MimeType = "application/vnd.google-apps.folder" 
    }; 
    var request = driveService.Files.Create(metadata); 
    request.Fields = "id"; 
    var folder = await request.ExecuteAsync(); 
    Console.WriteLine("Folder ID: " + folder.Id); 

    return folder; 
}