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CloudBlobClient.ListBlobsWithPrefix 方法 (String, BlobRequestOptions)

Returns an enumerable collection of blob items whose names begin with the specified prefix and that are retrieved lazily.

命名空間: Microsoft.WindowsAzure.StorageClient
組件: Microsoft.WindowsAzure.StorageClient (在 microsoft.windowsazure.storageclient.dll 中)

'用途
Dim instance As CloudBlobClient
Dim prefix As String
Dim options As BlobRequestOptions
Dim returnValue As IEnumerable(Of IListBlobItem)

returnValue = instance.ListBlobsWithPrefix(prefix, options)

public IEnumerable<IListBlobItem> ListBlobsWithPrefix (
	string prefix,
	BlobRequestOptions options
)
public IEnumerable<IListBlobItem> ListBlobsWithPrefix (
	String prefix, 
	BlobRequestOptions options
)
public function ListBlobsWithPrefix (
	prefix : String, 
	options : BlobRequestOptions
) : IEnumerable<IListBlobItem>

參數

prefix

The blob name prefix. This value must be preceded by the name of the container.

options

An object that specifies any additional options for the request.

傳回值

An enumerable collection of objects that implement IListBlobItem and are retrieved lazily.

The following code example lists blobs beginning with a specified prefix. Note that the prefix must include the name of the container.

static void ListBlobsInVirtualDirectory(Uri blobEndpoint, string accountName, string accountKey)
{
    //Create service client for credentialed access to the Blob service.
    CloudBlobClient blobClient = new CloudBlobClient(blobEndpoint, new StorageCredentialsAccountAndKey(accountName, accountKey));

    //List blobs in container 'mycontainer' beginning with prefix 'a/', using a hierarchical listing.
    //The results list only blobs directly beneath 'mycontainer/a/'
    foreach (var blobItem in blobClient.ListBlobsWithPrefix("mycontainer/a/"))
    {
        Console.WriteLine(blobItem.Uri);
    }

    //Results similar to:
    //http://storagesample.blob.core.windows.net/mycontainer/a/00001.txt
    //http://storagesample.blob.core.windows.net/mycontainer/a/b/

    Console.WriteLine();

    //List blobs in container 'mycontainer' beginning with prefix 'a/', using a flat listing.
    //The results list all blobs beneath 'mycontainer/a/', even if they are in a virtual subdirectory.
    BlobRequestOptions options = new BlobRequestOptions();
    options.UseFlatBlobListing = true;
    foreach (var blobItem in blobClient.ListBlobsWithPrefix("mycontainer/a/", options))
    {
        Console.WriteLine(blobItem.Uri);
    }

    //Results similar to:
    //http://storagesample.blob.core.windows.net/mycontainer/a/00001.txt
    //http://storagesample.blob.core.windows.net/mycontainer/a/b/00002.txt
    //http://storagesample.blob.core.windows.net/mycontainer/a/b/c/00003.txt
    //http://storagesample.blob.core.windows.net/mycontainer/a/b/c/00004.txt
    //http://storagesample.blob.core.windows.net/mycontainer/a/b/c/00005.txt
    //http://storagesample.blob.core.windows.net/mycontainer/a/b/c/00006.txt
}


The types of objects returned by the ListBlobsWithPrefix method depend on the type of listing that is being performed. If the UseFlatBlobListing property is set to true, ListBlobsWithPrefix will return an enumerable collection of CloudBlob objects. If UseFlatBlobListing is set to false (the default value), the listing may return a collection containing CloudBlob objects and CloudBlobDirectory objects. The latter case provides a convenience for subsequent enumerations over a virtual blob hierarchy.


任何這個類型的公用靜態 (在 Visual Basic 中為 Shared) 成員都具備執行緒安全。 並非所有的執行個體成員都是安全執行緒。

開發平台

Windows XP Home Edition, Windows XP Professional, Windows Server 2003、Windows Server 2008 和 Windows 2000

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