使用google drive api v3 C上传文件或创建文件夹#

我将Google Drive Api V3与C集成。我想执行多种操作,如上传文件,下载文件,创建文件夹,搜索文件,显示文件列表。使用Google drive的官方文档,我有以下代码。

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Drive.v3.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

    namespace GoogleDrive
{


class Program
{
    // If modifying these scopes, delete your previously saved credentials
    // at ~/.credentials/drive-dotnet-quickstart.json
    static   string[] Scopes = { DriveService.Scope.Drive,
                       DriveService.Scope.DriveAppdata,
                       DriveService.Scope.DriveFile,
                       DriveService.Scope.DriveMetadataReadonly,
                       DriveService.Scope.DriveReadonly,
                       DriveService.Scope.DriveScripts};
    static string ApplicationName = "Drive API .NET Quickstart";

    static void Main(string[] args)
    {
        UserCredential credential;

        using (var stream =
            new FileStream("client_secret.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);
        }

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


        // Define parameters of request.
        FilesResource.ListRequest listRequest = service.Files.List();
        listRequest.PageSize = 10;
        listRequest.Fields = "nextPageToken, files(id, name)";

        // List files.
        IList<Google.Apis.Drive.v3.Data.File> files = listRequest.Execute()
            .Files;
        Console.WriteLine("Files:");
        Console.WriteLine("Hello World");
        if (files != null && files.Count > 0)
        {
            foreach (var filee in files)
            {
                Console.WriteLine("{0} ({1})", filee.Name, filee.Id);
            }
        }
        else
        {
            Console.WriteLine("No files found.");
        }



        //file upload
         string path = "F:\\muneeb\\phone.jpg";
         var fileMetadata = new Google.Apis.Drive.v3.Data.File();
        // fileMetadata.Name = path.GetFileName(path);
        fileMetadata.MimeType = "image/jpeg";
        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);        
        //end
        Console.Read();

    }   
}