c# - Azure Blob 存储列表容器和 Blob

Question

我正在开发一个 Azure 存储项目，我需要在容器中上传和下载 blob，并在列表框中列出容器和 blob。我无法在列表框中显示容器和 blob。

这是我要列出的代码:

最后是我调用上传、下载和列表方法的界面背后的代码:

Answer 1

当您单击 Web 表单中的 Button3 时看不到任何结果的原因是您没有从 ListBlob 方法中获取任何数据。

更改 ListBlob 方法以返回如下结果:

public List<string> GetBlobs()
{
    List<string> blobs = new List<string>();

    // 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("mycontainer");

    // Loop over items within the container and output the length and URI.
    foreach (IListBlobItem item in container.ListBlobs(null, false))
    {
        if (item.GetType() == typeof (CloudBlockBlob))
        {
            CloudBlockBlob blob = (CloudBlockBlob) item;

            blobs.Add(string.Format("Block blob of length {0}: {1}", blob.Properties.Length, blob.Uri));

        }
        else if (item.GetType() == typeof (CloudPageBlob))
        {
            CloudPageBlob pageBlob = (CloudPageBlob) item;

            blobs.Add(string.Format("Page blob of length {0}: {1}", pageBlob.Properties.Length, pageBlob.Uri));

        }
        else if (item.GetType() == typeof (CloudBlobDirectory))
        {
            CloudBlobDirectory directory = (CloudBlobDirectory) item;

            blobs.Add(string.Format("Directory: {0}", directory.Uri));
        }
    }

    return blobs;
}

与您的网络表单相比，我假设您有一个名为 ListBox1 的列表框。调用该方法如下:

protected void Button3_Click(object sender, EventArgs e)
{
    ListBox1.DataSource = GetBlobs();
    ListBox1.DataBind();
}