C#

public void mtdProgressbar() {

            prgsBar.IsIndeterminate = false;

            prgsBar.Orientation = Orientation.Horizontal;

            prgsBar.Minimum = 0;

            prgsBar.Maximum = short.MaxValue;

            prgsBar.Value = 0;

            double value = 0;

            prgsBar.Visibility = Visibility;

            UpdateProgressBarDelegate updatePbDelegate = new UpdateProgressBarDelegate(prgsBar.SetValue);

            do
            {
                value += 1;

                Dispatcher.Invoke(updatePbDelegate,   System.Windows.Threading.DispatcherPriority.Background,new object[] { ProgressBar.ValueProperty, value });
            }
            while (prgsBar.Value != prgsBar.Maximum);

            prgsBar.Visibility = Visibility.Hidden;
        }

.
.
. 
else{
System.Threading.Thread trd = new System.Threading.Thread(new System.Threading.ThreadStart(this.mtdProgressbar));
                trd.IsBackground = true;
                trd.Start();
mtdTest(); //this method contains only loop for,represents an operation that requires the progressbar
}