c# - Windows 通用应用程序 - 从 Azure 容器下载所有 Blob

Question

我有一个通用 Windows 应用程序。

我试图在应用程序启动时从 azure 容器下载所有 blob。这是我的代码:

 public MainPage()
    {
        this.InitializeComponent();
        downloadblobs();
    }

public async void downloadblobs()
{
    CloudStorageAccount storageaccount = new CloudStorageAccount(new StorageCredentials("accountname", "accountkey"), true);
    CloudBlobClient blobClient = storageaccount.CreateCloudBlobClient();
    CloudBlobContainer container = blobClient.GetContainerReference("ContainerName");

    //---------------------
    int fileName = 1;
    var client = storageaccount.CreateCloudBlobClient();
    BlobContinuationToken continuationToken = null;
    string prefix = null;
    bool useFlatBlobListing = true;
    BlobListingDetails blobListingDetails = BlobListingDetails.All;
    int maxBlobsPerRequest = 2500;
    List<IListBlobItem> blobs = new List<IListBlobItem>();
    do
    {
        var listingResult = await container.ListBlobsSegmentedAsync(prefix, useFlatBlobListing, blobListingDetails, maxBlobsPerRequest, continuationToken, null, null);
        continuationToken = listingResult.ContinuationToken;
        blobs.AddRange(listingResult.Results);
        using (var fileStream = System.IO.File.OpenWrite(@"\NewImages\" + fileName + ".jpg"))
        {
            var blobReference = blobClient.GetBlobReferenceFromServerAsync(blobs.Uri);
            File downloadedFile = new File(blobReference + ".jpg");
            fileName++;
        }
    }
    while (continuationToken != null);
}

我在两行中收到错误:

            var blobReference = blobClient.GetBlobReferenceFromServerAsync(blobs.Uri);
            File downloadedFile = new File(blobReference + ".jpg");

我的错误是:

ListBlobItem does not contain a definition of Uri.

Cannot declare variable of static type File.

和

Cannot create an instance of the static class file.

Answer 1

您需要使用 container.listBlobsSegmentedAsync() 枚举容器中的 Blob。容器引用不仅仅包含自动下载的 blob 列表。

有关引用，请参阅here .