UploadDataCompletedEventHandler 代理人


UploadDataCompletedWebClient イベントを処理するメソッドを表します。Represents the method that will handle the UploadDataCompleted event of a WebClient.

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



イベントのソース。The source of the event.


イベント データを格納している UploadDataCompletedEventArgsA UploadDataCompletedEventArgs containing event data.


次のコード例は、データを非同期にアップロードする方法を示しています。The following code example demonstrates asynchronously uploading data.

void UploadDataInBackground2( String^ address )
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   String^ text = "Time = 12:00am temperature = 50";
   array<Byte>^data = System::Text::Encoding::UTF8->GetBytes( text );
   String^ method = "POST";

   client->UploadDataCompleted += gcnew UploadDataCompletedEventHandler( UploadDataCallback2 );
   client->UploadDataAsync( uri, method, data );

public static void UploadDataInBackground2 (string address)
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);
    string text = "Time = 12:00am temperature = 50";
    byte[] data = System.Text.Encoding.UTF8.GetBytes (text);
    string method = "POST";

    client.UploadDataCompleted += new UploadDataCompletedEventHandler (UploadDataCallback2);
    client.UploadDataAsync (uri, method, data);

Public Shared Sub UploadDataInBackground2(ByVal address As String)

    Dim client As WebClient = New WebClient()
    Dim text As String = "Time = 12:00am temperature = 50"
    Dim data() As Byte = System.Text.Encoding.UTF8.GetBytes(text)
    Dim method As String = "POST"

    AddHandler client.UploadDataCompleted, AddressOf UploadDataCallback2
    Dim uri as Uri = New Uri(address)
                client.UploadDataAsync(uri, method, data)
End Sub

アップロードが完了すると、次のメソッドが呼び出されます。The following method is called when the upload completes.

void UploadDataCallback2( Object^ /*sender*/, UploadDataCompletedEventArgs^ e )
   array<Byte>^data = dynamic_cast<array<Byte>^>(e->Result);
   String^ reply = System::Text::Encoding::UTF8->GetString( data );
   Console::WriteLine( reply );

private static void UploadDataCallback2 (Object sender, UploadDataCompletedEventArgs e)
    byte[] data = (byte[])e.Result;
    string reply = System.Text.Encoding.UTF8.GetString (data);

    Console.WriteLine (reply);

Private Shared Sub UploadDataCallback2(ByVal sender As Object, ByVal e As UploadDataCompletedEventArgs)

    Dim data() As Byte = CType(e.Result, Byte())
    Dim reply As String = System.Text.Encoding.UTF8.GetString(data)

End Sub


UploadDataCompletedEventHandler デリゲートを作成する場合は、イベントを処理するメソッドを指定します。When you create a UploadDataCompletedEventHandler delegate, you identify the method that will handle the event. イベントをイベント ハンドラーに関連付けるには、デリゲートのインスタンスをイベントに追加します。To associate the event with your event handler, add an instance of the delegate to the event. デリゲートを削除しない限り、そのイベントが発生すると常にイベント ハンドラーが呼び出されます。The event handler is called whenever the event occurs, unless you remove the delegate. イベントハンドラーデリゲートの詳細については、「イベントの処理と発生」を参照してください。For more information about event handler delegates, see Handling and Raising Events.



指定したデリゲートによって表されるメソッドを表すオブジェクトを取得します。Gets an object that represents the method represented by the specified delegate.