<C#>Google Drive APIs

第一步，激活Drive API

首先，注册Google帐号；其次，登录Google
Developers Console；接着，建立工程和程序；紧接，激活APIs & auth；最后，选择Credentials。

第二步，安装Google Client Library

安装一个NuGet包（Google.Apis.drive）。如在VS2012上，先选择Tools，再NuGet
Package Manager，接着Package Manager Console。在PM>中输入Install-Package Google.Apis
-Pre,Install-Package Google.Apis.Authentication -Pre,Install-Package
Google.Apis.Drive.v2 -Pre。

第三步，编程

 1 using System;

 2 using System.Threading;

 3 using System.Threading.Tasks;

 4

 5 using Google;

 6 using Google.Apis.Auth.OAuth2;

 7 using Google.Apis.Drive.v2;

 8 using Google.Apis.Drive.v2.Data;

 9 using Google.Apis.Services;

10

11 namespace GoogleDriveSamples

12 {

13     class DriveCommandLineSample

14     {

15         static void Main(string[] args)

16         {

17             UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync(

18                 new ClientSecrets

19                 {

20                     ClientId = "CLIENT_ID_HERE",

21                     ClientSecret = "CLIENT_SECRET_HERE",

22                 },

23                 new[] { DriveService.Scope.Drive },

24                 "user",

25                 CancellationToken.None).Result;

26

27             // Create the service.

28             var service = new DriveService(new BaseClientService.Initializer()

29             {

30                 HttpClientInitializer = credential,

31                 ApplicationName = "Drive API Sample",

32             });

33

34             File body = new File();

35             body.Title = "My document";

36             body.Description = "A test document";

37             body.MimeType = "text/plain";

38

39             byte[] byteArray = System.IO.File.ReadAllBytes("document.txt");

40             System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);

41

42             FilesResource.InsertMediaUpload request = service.Files.Insert(body, stream, "text/plain");

43             request.Upload();

44

45             File file = request.ResponseBody;

46             Console.WriteLine("File id: " + file.Id);

47             Console.WriteLine("Press Enter to end this process.");

48             Console.ReadLine();

49         }

50     }

51 }

最后，验证
运行程序后(F5)，跳出APIs申请权限，点击“接受”，就运行OK。

摘自：https://developers.google.com/drive/web/quickstart/quickstart-cs

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