WebClient.DownloadDataCompleted WebClient.DownloadDataCompleted WebClient.DownloadDataCompleted WebClient.DownloadDataCompleted Event

정의

비동기 데이터 다운로드 작업이 완료되면 발생합니다.Occurs when an asynchronous data download operation completes.

public:
 event System::Net::DownloadDataCompletedEventHandler ^ DownloadDataCompleted;
public event System.Net.DownloadDataCompletedEventHandler DownloadDataCompleted;
member this.DownloadDataCompleted : System.Net.DownloadDataCompletedEventHandler 
Public Event DownloadDataCompleted As DownloadDataCompletedEventHandler 

예제

다음 코드 예제에서는이 이벤트에 대 한 이벤트 처리기를 설정 하는 방법을 보여 줍니다.The following code example demonstrates setting an event handler for this event.

// Sample call : DownLoadDataInBackground ("http://www.contoso.com/GameScores.html");
void DownloadDataInBackground( String^ address )
{
   System::Threading::AutoResetEvent^ waiter = gcnew System::Threading::AutoResetEvent( false );
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   
   // Specify that the DownloadDataCallback method gets called
   // when the download completes.
   client->DownloadDataCompleted += gcnew DownloadDataCompletedEventHandler( DownloadDataCallback );
   client->DownloadDataAsync( uri, waiter );
   
   // Block the main application thread. Real applications
   // can perform other tasks while waiting for the download to complete.
   waiter->WaitOne();
}


// Sample call : DownLoadDataInBackground ("http://www.contoso.com/GameScores.html");
public static void DownloadDataInBackground (string address)
{
    System.Threading.AutoResetEvent waiter = new System.Threading.AutoResetEvent (false);
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);

    // Specify that the DownloadDataCallback method gets called
    // when the download completes.
    client.DownloadDataCompleted += new DownloadDataCompletedEventHandler (DownloadDataCallback);
    client.DownloadDataAsync (uri, waiter);

    // Block the main application thread. Real applications
    // can perform other tasks while waiting for the download to complete.
    waiter.WaitOne ();
}

'  Sample call : DownLoadDataInBackground ("http:' www.contoso.com/GameScores.html")
Public Shared Sub DownloadDataInBackground(ByVal address As String)

    Dim waiter As System.Threading.AutoResetEvent = New System.Threading.AutoResetEvent(False)
    Dim client As WebClient = New WebClient()

    '  Specify that the DownloadDataCallback method gets called
    '  when the download completes.
    AddHandler client.DownloadDataCompleted, AddressOf DownloadDataCallback
                Dim uri as Uri = New Uri(address)
    client.DownloadDataAsync(uri, waiter)

    '  Block the main application thread. Real applications
    '  can perform other tasks while waiting for the download to complete.
    waiter.WaitOne()
End Sub

설명

이 이벤트는 비동기 데이터 다운로드 작업이 완료 될 때마다 발생 합니다.This event is raised each time an asynchronous data download operation completes. 호출 하 여 비동기 데이터 다운로드를 시작 합니다 DownloadDataAsync 메서드.Asynchronous data downloads are started by calling the DownloadDataAsync methods.

DownloadDataCompletedEventHandler 는이 이벤트에 대 한 대리자입니다.The DownloadDataCompletedEventHandler is the delegate for this event. DownloadDataCompletedEventArgs 클래스는 이벤트 데이터를 사용 하 여 이벤트 처리기를 제공 합니다.The DownloadDataCompletedEventArgs class provides the event handler with event data.

이벤트를 처리 하는 방법에 대 한 자세한 내용은 참조 하세요. 이벤트 처리 및 발생합니다.For more information about how to handle events, see Handling and Raising Events.

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