This documentation is archived and is not being maintained.

DownloadDataCompletedEventArgs.Result Property

Gets the data that is downloaded by a DownloadDataAsync method.

Namespace:  System.Net
Assembly:  System (in System.dll)

Public ReadOnly Property Result As Byte()
Dim instance As DownloadDataCompletedEventArgs 
Dim value As Byte()

value = instance.Result

Property Value

Type: System.Byte()
A Byte array that contains the downloaded data.

You should check the Error and Cancelled properties before using the data that is returned by this property. 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.

The following code example displays the value of this property.

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

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


        '  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)

        End If 

        '  Let the main application thread resume.
    End Try 
End Sub
void DownloadDataCallback (Object* /*sender*/, DownloadDataCompletedEventArgs* e)
    System::Threading::AutoResetEvent* waiter = dynamic_cast<System::Threading::AutoResetEvent*>(e->UserToken);

        // If the request was not canceled and did not throw
        // an exception, display the resource.
        if (!e->Cancelled && e->Error == 0)
            Byte data[] = dynamic_cast<Byte[]>(e->Result);
            String* textData = System::Text::Encoding::UTF8->GetString (data);

            Console::WriteLine (textData);
        // Let the main application thread resume.
        waiter->Set ();

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0