从 Azure Blob 存储下载图像

Question

我正在编写一个程序，该程序可以从 Azure 存储容器的指定文件路径下载图像。我从网上找到的代码中组合了以下函数，然后删除了错误。但是，我无法摆脱的最终错误。完整代码如下：using System;using System.Windows.Forms;using Microsoft.WindowsAzure.Storage;using Microsoft.WindowsAzure.Storage.Blob;using System.IO;namespace WarehousePhotoProgram{    public partial class Form1 : Form    {        string storageConnectionString = Environment.GetEnvironmentVariable("storageconnectionstring");    public Form1()       {            InitializeComponent();        }        private void DownloadFileFromBlob(string fileName, string containerName)        {            CloudStorageAccount account = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue(storageConnectionString));            CloudBlobClient blobClient = account.CreateCloudBlobClient();            CloudBlobContainer container = blobClient.GetContainerReference(containerName);            CloudBlob blob = container.GetBlobReference(fileName);            MemoryStream memStream = new MemoryStream();            blob.DownloadToStream(memStream);            Response.ContentType = blob.Properties.ContentType;            Response.AddHeader("Content-Disposition", "Attachment; filename=" + fileName.ToString());            Response.AddHeader("Content-Length", blob.Properties.Length.ToString());            Response.BinaryWrite(memStream.ToArray());        }    }   }代码当前错误地RoleEnvironment说命名空间不存在，我是否缺少程序集引用？还是我需要导入另一个using. 第二个错误是所有的Result.再次声明Response不存在。这也是从 BlobStorage 下载图像的最佳方法还是我应该采取另一种方法？编辑：我RoleEnvironment在给定答案的帮助下解决了错误。现在尝试确定代码的响应部分也需要更改。        public Form1()    {        InitializeComponent();        //_storageAccount = CloudStorageAccount.Parse(storageConnectionString);        DownloadFileFromBlob("029000/1.png", "warehouseimages", "Desktop");    }