DownloadProgressChangedEventArgs Class

// Sample call : DownLoadFileInBackground2 ("http://www.contoso.com/logs/January.txt");
public static void DownLoadFileInBackground2 (string address)
{
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);

    // Specify that the DownloadFileCallback method gets called 
    // when the download completes.
    client.DownloadFileCompleted += new AsyncCompletedEventHandler (DownloadFileCallback2);
    // Specify a progress notification handler.
    client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(DownloadProgressCallback);
    client.DownloadFileAsync (uri, "serverdata.txt");
}

// Sample call : DownLoadFileInBackground2 ("http://www.contoso.com/logs/January.txt");
void DownLoadFileInBackground2 (String* address)
{
    WebClient* client = new WebClient ();

    // Specify that the DownloadFileCallback method gets called
    // when the download completes.
    client->DownloadFileCompleted += new AsyncCompletedEventHandler (DownloadFileCallback2);
    // Specify a progress notification handler.
    client->DownloadProgressChanged += new DownloadProgressEventHandler(DownloadProgressCallback);
    client->DownloadFileAsync (address, S"serverdata.txt");
}

private static void UploadProgressCallback(object sender, UploadProgressChangedEventArgs e)
{
    // Displays the operation identifier, and the transfer progress.
    Console.WriteLine("{0}    uploaded {1} of {2} bytes. {3} % complete...", 
        (string)e.UserState, 
        e.BytesSent, 
        e.TotalBytesToSend,
        e.ProgressPercentage);
}
private static void DownloadProgressCallback(object sender, DownloadProgressChangedEventArgs e)
{
    // Displays the operation identifier, and the transfer progress.
    Console.WriteLine("{0}    downloaded {1} of {2} bytes. {3} % complete...", 
        (string)e.UserState, 
        e.BytesReceived, 
        e.TotalBytesToReceive,
        e.ProgressPercentage);
}

void UploadProgressCallback(Object* /*sender*/, UploadProgressEventArgs* e)
{
    // Displays the operation identifier, and the transfer progress.
    Console::WriteLine(S"{0}    transferred {1} of {2} bytes. {3} % complete...", 
        dynamic_cast<String*>(e->UserToken),
        __box(e->BytesSent),
        __box(e->TotalBytesToSend),
        __box(e->ProgressPercentage));
}
void DownloadProgressCallback(Object* /*sender*/, DownloadProgressEventArgs* e)
{
    // Displays the operation identifier, and the transfer progress.
    Console::WriteLine(S"{0}    transferred {1} of {2} bytes. {3} % complete...", 
        dynamic_cast<String*>(e->UserToken),
        __box(e->BytesReceived),
        __box(e->TotalBytesToReceive),
        __box(e->ProgressPercentage));
}