DownloadDataCompletedEventArgs.Result DownloadDataCompletedEventArgs.Result DownloadDataCompletedEventArgs.Result DownloadDataCompletedEventArgs.Result Property

Definition

Ruft die von einer DownloadDataAsync-Methode heruntergeladenen Daten ab.Gets the data that is downloaded by a DownloadDataAsync method.

public:
 property cli::array <System::Byte> ^ Result { cli::array <System::Byte> ^ get(); };
public byte[] Result { get; }
member this.Result : byte[]
Public ReadOnly Property Result As Byte()

Eigenschaftswert

Byte[]

Ein Byte-Array, das die heruntergeladenen Daten enthält.A Byte array that contains the downloaded data.

Beispiele

Das folgende Codebeispiel zeigt den Wert dieser Eigenschaft.The following code example displays the value of this property.

void DownloadDataCallback( Object^ /*sender*/, DownloadDataCompletedEventArgs^ e )
{
   System::Threading::AutoResetEvent^ waiter = dynamic_cast<System::Threading::AutoResetEvent^>(e->UserState);
   try
   {
      
      // If the request was not canceled and did not throw
      // an exception, display the resource.
      if (  !e->Cancelled && e->Error == nullptr )
      {
         array<Byte>^data = dynamic_cast<array<Byte>^>(e->Result);
         String^ textData = System::Text::Encoding::UTF8->GetString( data );
         Console::WriteLine( textData );
      }
   }
   finally
   {
      
      // Let the main application thread resume.
      waiter->Set();
   }

}


private static void DownloadDataCallback (Object sender, DownloadDataCompletedEventArgs e)
{
    System.Threading.AutoResetEvent waiter = (System.Threading.AutoResetEvent)e.UserState;

    try
    {
        // If the request was not canceled and did not throw
        // an exception, display the resource.
        if (!e.Cancelled && e.Error == null)
        {
            byte[] data = (byte[])e.Result;
            string textData = System.Text.Encoding.UTF8.GetString (data);

            Console.WriteLine (textData);
        }
    }
    finally
    {
        // Let the main application thread resume.
        waiter.Set ();
    }
}

Private Shared Sub DownloadDataCallback(ByVal sender As Object, ByVal e As DownloadDataCompletedEventArgs)

    Dim waiter As System.Threading.AutoResetEvent = CType(e.UserState, System.Threading.AutoResetEvent)

    Try

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

            Console.WriteLine(textData)
        End If
    Finally

        '  Let the main application thread resume.
        waiter.Set()
    End Try
End Sub

Hinweise

Überprüfen Sie die Error und Cancelled Eigenschaften vor der Verwendung von Daten, die von dieser Eigenschaft zurückgegeben werden.You should check the Error and Cancelled properties before using the data that is returned by this property. Wenn die Error Wert der Eigenschaft ist ein Exception Objekt oder die Cancelled Eigenschaftswert ist true, des asynchronen Vorgangs nicht ordnungsgemäß abgeschlossen und die Result Eigenschaftswert nicht mehr gültig.If the Error property's value is an Exception object or the Cancelled property's value is true, the asynchronous operation did not complete correctly and the Result property's value will not be valid.

Gilt für: