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DownloadDataCompletedEventArgs.Result Property

Gets the data that is downloaded by a DownloadDataAsync method.

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

public byte[] Result { get; }

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 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 ();
        }
    }

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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