C# 将文件上载到azure blob存储，然后发送带有files base64字符串的http响应不'；行不通

我正在尝试使用azures blob存储实现以下目标

将文件上载到azure blob存储

然后发送一个包含文件base64字符串的http响应 奇怪的是，我只能让其中一个工作，因为它会导致另一个停止工作，具体取决于代码的顺序

        HttpPostedFile image = Request.Files["froalaImage"];
        if (image != null)
        {
            string fileName = RandomString() + System.IO.Path.GetExtension(image.FileName);
            string companyID = Request.Form["companyID"].ToLower();

            // Retrieve storage account from connection string.
            CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
                CloudConfigurationManager.GetSetting("StorageConnectionString"));

            // Create the blob client.
            CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

            // Retrieve reference to a previously created container.
            CloudBlobContainer container = blobClient.GetContainerReference(companyID);

            // Create the container if it doesn't already exist.
            container.CreateIfNotExists();

            // Retrieve reference to a blob named "filename".
            CloudBlockBlob blockBlob = container.GetBlockBlobReference(fileName);

            // Create or overwrite the blob with contents from a local file.
            using (image.InputStream)
            {
                blockBlob.UploadFromStream(image.InputStream);
                byte[] fileData = null;
                using (var binaryReader = new BinaryReader(image.InputStream))
                {
                    fileData = binaryReader.ReadBytes(image.ContentLength);
                }
                string base64ImageRepresentation = Convert.ToBase64String(fileData);                   

                // Clear and send the response back to the browser.
                string json = "";
                Hashtable resp = new Hashtable();
                resp.Add("link", "data:image/" + System.IO.Path.GetExtension(image.FileName).Replace(@".", "") + ";base64," + base64ImageRepresentation);
                resp.Add("imgID", "BLOB/" + fileName);
                json = JsonConvert.SerializeObject(resp);
                Response.Clear();
                Response.ContentType = "application/json; charset=utf-8";
                Response.Write(json);
                Response.End();
            }
        }

上面的代码将文件上载到azure的blob存储，但是base64字符串将为空

但是如果我把行

blockBlob.UploadFromStream（image.InputStream）行下方
string base64ImageRepresentation=Convert.ToBase64String（fileData）

我将获得base64字符串没有问题，但是文件未正确上载到azure的blob存储。
第一次使用后，您是否需要重置流位置

image.InputStream.Seek(0, SeekOrigin.Begin);