UpdateMediaUpload更新失败

Question

我正在开发一个控制台应用程序来管理Google驱动器上的文件，我的代码基于google.drive.api.v3文档。

我可以成功上传，下载和删除文件，但是我无法更新文件。

我正在使用UpdateMediaUpload类中的以下方法：

 public void Upload(UserCredential Credential, string folderGoogleId, string fileName, byte[] b)
        {
            using (DriveService service = new DriveService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = Credential,
                ApplicationName = ApplicationName,
            }))
            {
                try
                {
                    var fileUp = new File();
                    fileUp.Name = fileName;
                    fileUp.MimeType = fileName.GetContentType();
                    fileUp.Parents = parent;
                    using (Stream stream = new MemoryStream(b))
                    {
                        FilesResource.UpdateMediaUpload request = service.Files.Update(fileUp, folderGoogleId, stream,fileUp.MimeType);
                        request.Upload();
                        var update = request.ResponseBody; // this is the value I want
                    }
                }
                catch (Exception e)
                {
                    var msg = e.ToString();
                }
            }

        }

但是当我使用此功能时，变量update的值设置为null，并且它不会更新文件。

如果有人知道如何解决此问题，我将非常有帮助。

Answer 1

[确定，这是一个解决方案，所有内容都不可读，异常显示不能在更新请求中直接写入主字段。改用addParents和removeParents参数。因此我将文件的父级移到了请求中

public void Upload(UserCredential Credential, string folderGoogleId, string fileName, byte[] b)
        {
            using (DriveService service = new DriveService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = Credential,
                ApplicationName = ApplicationName,
            }))
            {
                try
                {
                    var fileUp = new File();
                    fileUp.Name = fileName;
                    fileUp.MimeType = fileName.GetContentType();
                    using (Stream stream = new MemoryStream(b))
                    {
                        FilesResource.UpdateMediaUpload request = service.Files.Update(fileUp, folderGoogleId, stream,fileUp.MimeType);
                        request.AddParents = folderGoogleId;
                        request.Upload();
                        var update = request.ResponseBody; // this is the value I want
                    }
                }
                catch (Exception e)
                {
                    var msg = e.ToString();
                }
            }

        }