DownloadStringCompletedEventHandler DownloadStringCompletedEventHandler DownloadStringCompletedEventHandler DownloadStringCompletedEventHandler Delegate

정의

DownloadStringCompletedWebClient 이벤트를 처리할 메서드를 나타냅니다.Represents the method that will handle the DownloadStringCompleted event of a WebClient.

public delegate void DownloadStringCompletedEventHandler(System::Object ^ sender, DownloadStringCompletedEventArgs ^ e);
public delegate void DownloadStringCompletedEventHandler(object sender, DownloadStringCompletedEventArgs e);
type DownloadStringCompletedEventHandler = delegate of obj * DownloadStringCompletedEventArgs -> unit
Public Delegate Sub DownloadStringCompletedEventHandler(sender As Object, e As DownloadStringCompletedEventArgs)

매개 변수

sender
Object Object Object Object

이벤트 소스입니다.The source of the event.

상속
DownloadStringCompletedEventHandlerDownloadStringCompletedEventHandlerDownloadStringCompletedEventHandlerDownloadStringCompletedEventHandler

예제

다음 코드 예제에서는 문자열을 비동기적으로 다운로드 하는 방법을 보여 줍니다.The following code example demonstrates downloading a string asynchronously.

// Sample call : DownloadStringInBackground2 ("http://www.contoso.com/GameScores.html");
void DownloadStringInBackground2( String^ address )
{
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   
   // Specify that the DownloadStringCallback2 method gets called
   // when the download completes.
   client->DownloadStringCompleted += gcnew DownloadStringCompletedEventHandler( DownloadStringCallback2 );
   client->DownloadStringAsync( uri );
}


// Sample call : DownloadStringInBackground2 ("http://www.contoso.com/GameScores.html");
public static void DownloadStringInBackground2 (string address)
{
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);

    // Specify that the DownloadStringCallback2 method gets called
    // when the download completes.
    client.DownloadStringCompleted += new DownloadStringCompletedEventHandler (DownloadStringCallback2);
    client.DownloadStringAsync (uri);
}

'  Sample call : DownloadStringInBackground2 ("http:' www.contoso.com/GameScores.html")
Public Shared Sub DownloadStringInBackground2(ByVal address As String)

    Dim client As WebClient = New WebClient()

    '  Specify that the DownloadStringCallback2 method gets called
    '  when the download completes.
    AddHandler client.DownloadStringCompleted, AddressOf DownloadStringCallback2
                Dim uri as Uri = New Uri(address)
    client.DownloadStringAsync(uri)
End Sub

다음 메서드는 다운로드가 완료 되 면 호출 됩니다.The following method is called when the download completes.

void DownloadStringCallback2( Object^ /*sender*/, DownloadStringCompletedEventArgs^ e )
{
   
   // If the request was not canceled and did not throw
   // an exception, display the resource.
   if (  !e->Cancelled && e->Error == nullptr )
   {
      String^ textString = dynamic_cast<String^>(e->Result);
      Console::WriteLine( textString );
   }
}


private static void DownloadStringCallback2 (Object sender, DownloadStringCompletedEventArgs e)
{
    // If the request was not canceled and did not throw
    // an exception, display the resource.
    if (!e.Cancelled && e.Error == null)
    {
        string textString = (string)e.Result;

        Console.WriteLine (textString);
    }
}

Private Shared Sub DownloadStringCallback2(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs)

    '  If the request was not canceled and did not throw
    '  an exception, display the resource.
    If e.Cancelled = False AndAlso e.Error Is Nothing Then

        Dim textString As String = CStr(e.Result)
        Console.WriteLine(textString)
    End If
End Sub

설명

DownloadStringCompletedEventHandler 대리자를 만들 때, 이벤트를 처리할 메서드를 식별합니다.When you create a DownloadStringCompletedEventHandler delegate, you identify the method that will handle the event. 이벤트를 이벤트 처리기와 연결하려면 대리자의 인스턴스를 해당 이벤트에 추가합니다.To associate the event with your event handler, add an instance of the delegate to the event. 대리자를 제거하지 않는 경우 이벤트가 발생할 때마다 이벤트 처리기가 호출됩니다.The event handler is called whenever the event occurs, unless you remove the delegate. 이벤트 처리기 대리자에 대 한 자세한 내용은 참조 하세요. 이벤트 처리 및 발생합니다.For more information about event handler delegates, see Handling and Raising Events.

확장 메서드

GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate)

지정된 대리자가 나타내는 메서드를 나타내는 개체를 가져옵니다.Gets an object that represents the method represented by the specified delegate.

적용 대상