Initiates the asynchronous execution of the DownloadDirectory operation. 
            
 Declaration Syntax
 Declaration Syntax| C# | 
public IAsyncResult BeginDownloadDirectory( TransferUtilityDownloadDirectoryRequest request, AsyncCallback callback, Object state )
 Parameters
 Parameters- request (TransferUtilityDownloadDirectoryRequest)
- Contains all the parameters required to download objects from a directory in Amazon S3 to a local directory.
- callback (AsyncCallback)
- An AsyncCallback delegate that is invoked when the operation completes.
- state (Object)
- A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback procedure using the AsyncState property.
 Return Value
 Return ValueAn IAsyncResult that can be used to poll, or wait for results, or both. 
            This values is also needed when invoking EndDownload.
 Exceptions
 Exceptions| Exception | Condition | 
|---|---|
| ArgumentNullException | |
| WebException | |
| AmazonS3Exception | 
 See Also
 See AlsoDownloadDirectory()()()()