Azure Blob 下载为字节数组错误"Memory Stream is not expandable"

Question

我想将 blob 下载为字节数组，但上面提到了错误。我的代码如下

Dim fullFileBytes() As Byte = {}
Dim objAzureStorage As New AzureCloudStorage
Dim fullImageBlob As Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob = objAzureStorage.CloudContainer.GetBlockBlobReference(row(0))
fullImageBlob.DownloadToByteArray(fullFileBytes, 0)

Answer 1

由于我没有使用过 VB.Net，让我用 C# 提供一个答案。从本质上讲，我所做的是在内存流中读取 blob 的内容，然后将其转换为字节数组并返回该数组。

    private static byte[] ReadBlobInByteArray()
    {
        var cred = new StorageCredentials(accountName, accountKey);
        var account = new CloudStorageAccount(cred, true);
        var container = account.CreateCloudBlobClient().GetContainerReference("container-name");
        var blob = container.GetBlockBlobReference("blob-name");
        using (var ms = new MemoryStream())
        {
            blob.DownloadToStream(ms);
            return ms.ToArray();
        }
    }