c# - 将 blob 和容器列出到列表框 C#

Question

我已经使用 WCF 创建了一个 Azure 云服务，我试图在其中列出我的容器和 blob。我已经能够列出我的容器和 blob。我想做的是，当我在列表框中选择一个容器时，它将显示它在另一个列表框中包含的 blob。

这是我列出容器的代码:

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

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

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

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

        //Get the list of the blob from the above container

        IEnumerable<CloudBlobContainer> containers = blobClient.ListContainers();

        foreach (CloudBlobContainer item in containers)
        {

            blobs.Add(string.Format("{0}", item.Uri));
        }

            return blobs;
    }

列出我的 blob 的代码:

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

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

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

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


        //Get the list of the blob from the above container
        IEnumerable<IListBlobItem> blobList = container.ListBlobs();

        //Display the names on the page
        string names = string.Empty;

        foreach (IListBlobItem item in blobList)
        {
            blobs.Add(string.Format("Directory {0}", item.Uri));
        }

在我的 Web 表单中，我在页面加载中调用 ListContainer 方法:

 protected void Page_Load(object sender, EventArgs e)
    {
        BlobService list = new BlobService();
        ListBox2.DataSource = list.ListContainer();
        ListBox2.DataBind();

    }

当我加载项目时，我的容器列在 ListBox 2 中。我需要的是，当我单击容器时，它将显示它包含在另一个 ListBox 中的 blob。我尝试了以下操作，但没有任何反应:

protected void ListBox2_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (ListBox2.SelectedItem.Equals("http://127.0.0.1:10000/devstorageaccount1/mycontainer"))
        {
            BlobService list = new BlobService();
            ListBox1.DataSource = list.ListBlob("mycontainer");
            ListBox1.DataBind();
        }

        else
        {
            //Error Message
        }

Answer 1

如果索引已更改，则在回发到服务器期间将调用事件处理程序 ListBox2_SelectedIndexChanged。为了在用户选择新项目时启动回发，您需要在 aspx 标记中的 ListBox2 上设置 AutoPostBack="True" (请参阅此 link详情):

<asp:ListBox ID="ListBox2" runat="server" AutoPostBack="True" 
    OnSelectedIndexChanged="ListBox2_SelectedIndexChanged" />