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Re利用.NET SDK大文件上传代码 @千鸟 按照您提供的方法，文件分块上传，我已经获取到了ETags: foreach (PartETag partETag in partETags)                 {                     completeReq.PartETags.Add(partETag);                 }                 //  红色标注的是与JAVA的SDK有区别的地方                 //完成分块上传                 CompleteMultipartUploadResult completeResult = ossClient.CompleteMultipartUpload(completeReq);                 // 返回最终文件下载地址                 var downloadurl = completeResult.Location.ToString();                 //返回最终文件的MD5，用于用户进行校验                 this.Etag = completeResult.ETag; 那么问题来了，我通过自己的方法取的文件MD5值，和这个OSS最后的结果不一致，该怎么破？ private string GetMd5(string fileName)         {             using (FileStream file = new FileStream(fileName, FileMode.Open))             {                 System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();                 byte[] retVal = md5.ComputeHash(file);                 file.Close();                 StringBuilder sb = new StringBuilder();                 for (int i = 0; i                 {                     sb.Append(i.ToString('X2'));                 }                                  return sb.ToString();             }         }