Coding の ORZ : Google Drive API .NET 一條龍系列 C#

前置作業

我們近來到這裡我們找尋左邊的

接下來呢

應用程式類型一定要選擇其他

然後呢

創建完後得到

下載後得到一個json

透過NUGET 搜尋並下載 Google APIs Client Library點選右方安裝!

取名叫做client_id，一定要記得勾選一率複製重要!然後複製到目前的專案底下我們這邊放在參考這邊

ㄎㄎvisual studio 有一個位置重導向，這在開發asp.net也就是網路應用程式的話，每次你的visual studio 會動態的產生一組port，在asp.net的話呢可以把動態port設為false。

就是可能你授權出錯或是下載到錯誤的json檔解析錯誤這樣，我一開始選擇的是網路應用程式，debug好久呢~

	private static void Create_folder(string folder_name, DriveService service)
	{
	string pageToken = null;
	var fileMetadata = new Google.Apis.Drive.v3.Data.File()
	{
	Name = folder_name,
	MimeType = "application/vnd.google-apps.folder"
	};
	var request = service.Files.Create(fileMetadata);
	request.Fields = "id";
	var file = request.Execute();
	MessageBox.Show(file.Id);
	Console.WriteLine("Folder ID: " + file.Id);

	}

view raw Create_folder.cs hosted with ❤ by GitHub

	private static void Download(string file_name, DriveService service,String savato)
	{
	var fileId = file_name;
	var request = service.Files.Get(fileId);
	var stream = new System.IO.MemoryStream();

	// Add a handler which will be notified on progress changes.
	// It will notify on each chunk download and when the
	// download is completed or failed.
	request.MediaDownloader.ProgressChanged +=
	(IDownloadProgress progress) =>
	{
	switch (progress.Status)
	{
	case DownloadStatus.Downloading:
	{
	Console.WriteLine(progress.BytesDownloaded);
	break;
	}
	case DownloadStatus.Completed:
	{
	Console.WriteLine("Download complete.");
	MessageBox.Show("Download complete.");
	SaveStream(stream, savato);
	break;
	}
	case DownloadStatus.Failed:
	{
	Console.WriteLine("Download failed.");
	MessageBox.Show("Download failed.");
	break;
	}
	}
	};
	request.Download(stream);
	}


	private static void SaveStream(System.IO.MemoryStream stream, string saveTo)
	{
	using (System.IO.FileStream file = new System.IO.FileStream(saveTo, System.IO.FileMode.Create, System.IO.FileAccess.Write))
	{
	stream.WriteTo(file);
	}
	}

view raw Download.cs hosted with ❤ by GitHub

	UserCredential credential;
	credential = GetCredentials();
	// Create Drive API service.
	var service = new DriveService(new BaseClientService.Initializer()
	{
	HttpClientInitializer = credential,
	ApplicationName = ApplicationName,
	});
	//UploadBasicImage("C:\\0110000010001.txt", service);
	// MessageBox.Show(Searach("Invoices", service));
	// UploadBasicData("C:\\0110000010001.txt", service, Searach("Invoices", service,0));
	// Download(Searach("0110000010001.txt", service,1),service, "C:\\qwe.txt");

view raw Form1.cs hosted with ❤ by GitHub

	private static UserCredential GetCredentials()
	{
	UserCredential credential;

	using (var stream = new FileStream("client_id.json", FileMode.Open, FileAccess.Read))
	{
	string credPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);

	credPath = Path.Combine(credPath, ".credentials/drive-dotnet-quickstart.json");

	credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
	GoogleClientSecrets.Load(stream).Secrets,
	Scopes,
	"user",
	CancellationToken.None,
	new FileDataStore(credPath, true)).Result;
	// Console.WriteLine("Credential file saved to: " + credPath);
	}

	return credential;
	}

view raw GetCredentials.cs hosted with ❤ by GitHub

	private static String Searach(string file_name, DriveService service,int change)
	{
	FilesResource.ListRequest request = service.Files.List();
	//find folder
	if( change==0)
	request.Q = "mimeType = 'application/vnd.google-apps.folder' and name = '" + file_name + "'";
	else
	//find file
	request.Q = "mimeType = 'text/plain' and name = '" + file_name + "'";
	var folderId = request.Execute(); // Error occurs here upon execution
	List<string> File_Id = new List<string>();
	List<string> File_Name = new List<string>();
	// MessageBox.Show(request.Execute().Files.Count.ToString());
	for (int i = 0; i < folderId.Files.Count; i++)
	{
	File_Id.Add(folderId.Files[i].Id);
	File_Name.Add(folderId.Files[i].Name);
	}
	String find_id = null;
	for (int i = 0; i < folderId.Files.Count; i++)
	{
	if (File_Name[0] == file_name)
	find_id = File_Id[0];

	}
	return find_id;

	}

view raw Searach.cs hosted with ❤ by GitHub


	private static void UploadBasicData(string path, DriveService service,string foloder_id)
	{
	var folderId = "0BwwA4oUTeiV1TGRPeTVjaWRDY1E";
	var fileMetadata = new Google.Apis.Drive.v3.Data.File();
	fileMetadata.Name = Path.GetFileName(path);
	fileMetadata.MimeType = "text/plain";
	fileMetadata.Parents = new List<string> { foloder_id };
	FilesResource.CreateMediaUpload request;
	using (var stream = new System.IO.FileStream(path, System.IO.FileMode.Open))
	{
	request = service.Files.Create(fileMetadata, stream, "image/jpeg");
	request.Fields = "id";
	request.Upload();
	}

	var file = request.ResponseBody;

	Console.WriteLine("File ID: " + file.Id);
	MessageBox.Show("ok");

	}

view raw UploadBasicData.cs hosted with ❤ by GitHub

我的部落格阿，考杯剩下6X個文章嗚嗚