从web用户使用C#接口上传到Google Drive

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.IO;
using System.Threading;

namespace GoogleDriveUploader
{
    class Program
    {
        static string[] Scopes = { DriveService.Scope.Drive };
        static string ApplicationName = "Google Drive Uploader";

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

            using (var stream = new FileStream("credentials.json", FileMode.Open, FileAccess.Read))
            {
                string credPath = "token.json";
                credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    Scopes,
                    "user",
                    CancellationToken.None,
                    new FileDataStore(credPath, true)).Result;
                Console.WriteLine("Credential file saved to: " + credPath);
            }

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

            // 上传文件
            string filePath = "path/to/file.ext";
            string mimeType = "application/octet-stream";
            string folderId = "your-folder-id"; // 上传到指定文件夹的ID

            var fileMetadata = new Google.Apis.Drive.v3.Data.File()
            {
                Name = Path.GetFileName(filePath),
                Parents = new[] { folderId }
            };

            FilesResource.CreateMediaUpload request;
            using (var stream = new FileStream(filePath, FileMode.Open))
            {
                request = service.Files.Create(
                    fileMetadata, stream, mimeType);
                request.Fields = "id";
                request.Upload();
            }

            var file = request.ResponseBody;
            Console.WriteLine("File ID: " + file.Id);
        }
    }
}