hello,

I have a TextBox in StatusBar in wpf which i want to update.

I have a list of files in ListBox. On each file I would be doing some operation by calling say method ProcessFile(). So whenever the file processing is completed I want to show that file's name in the StatusBar text.

I have tried something like this:

private void button_Click(object sender, RoutedEventArgs e)
    {

        statusBar.Visibility = Visibility.Visible;

        DispatcherFrame frame = new DispatcherFrame();
        Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(TimeConsumingMethod), frame);
        Dispatcher.PushFrame(frame);
        statusBar.Visibility = Visibility.Collapsed;
    }

    public object TimeConsumingMethod(Object arg)
    {
        ((DispatcherFrame)arg).Continue = false;

        foreach (string fileName in destinationFilesList.Items)
        {
            txtStatus.Text = fileName.ToString();
            //Assume that each process takes some time to complete
            System.Threading.Thread.Sleep(1000);
        }
        return null;
    }

But i can only see the last file's name in the StatusBar. Whats wrong with the code? Can somebody correct it? Thanks.