c# - 如何通过多用户应用访问特定的 google drive 帐户？

Question

正如标题所说，如何使用位于可以安装在多台机器上的应用程序中的 Google API 来处理特定的 google drive 帐户。

亲切地。

标签： c#google-api

Answer 1

这是我使用 Google drive api 和身份验证的代码：

private void btnAffFiles_Click(object sender, EventArgs e)
    {
        List<IList<Google.Apis.Drive.v3.Data.File>> ListFiles = Manip_GDrive.GetListElem("",1000);
        for (int i=0; i < ListFiles.Count; i++)
        {
            RTBFiles.Text = RTBFiles.Text + "\nPage N° : " + (int)(i+1);
            if (ListFiles[i] != null && ListFiles[i].Count > 0)
            {
                foreach (var file in ListFiles[i])
                {
                    Console.WriteLine("File Name : " + file.Name + " // File Id : " + file.Id);
                    RTBFiles.Text = RTBFiles.Text + "\nFile Name : " + file.Name + " // File Id : " + file.Id;
                }
            }
        }
    }

    static string[] Scopes = { DriveService.Scope.Drive };
    static string ApplicationName = "my-project";

    public static List<IList<Google.Apis.Drive.v3.Data.File>> GetListElem(string parentFolderId, int pageSize)
    {
        List<IList<Google.Apis.Drive.v3.Data.File>> listAllElem = new List<IList<Google.Apis.Drive.v3.Data.File>>();
        try
        {
            if (InternetCnxState() == true)
            {
                DriveService service = Manip_GDrive.UserCredentialService("client_id.json");
                string pageToken = null;
                do //loop for all pages 
                {
                    var listRequest = service.Files.List();
                    if (parentFolderId != "") { listRequest.Q = "'" + parentFolderId + "' in parents"; }
                    listRequest.Spaces = "drive";
                    listRequest.PageSize = pageSize;
                    listRequest.Fields = "nextPageToken, files(id, name)";
                    listRequest.PageToken = pageToken;
                    var result = listRequest.Execute();
                    listAllElem.Add(result.Files);
                    pageToken = result.NextPageToken;
                } while (pageToken != null);
            }
            else
            {
                MessageBox.Show("Pas de connexion internet! \nVeuillez vérifier votre connexion internet avant de réessayer", "Hmidi Amine", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }
        catch (Exception e)
        {
            MessageBox.Show("Une erreure s'est produite! \nCode d'erreur : " + e.Message, "Hmidi Amine", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        return listAllElem;
    }

    public static DriveService UserCredentialService(string streamJsonPath)
    {
        UserCredential credential;

        using (var stream = new FileStream(streamJsonPath, 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);
        }

        // Create Drive API service.
        var service = new DriveService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = ApplicationName,
        });

        return service;
    }