private void Maximize()
{
var area = Screen.GetWorkingArea(new System.Drawing.Rectangle((int)Left, (int)Top, (int)ActualWidth, (int)ActualHeight));
previousBounds = new Rect(Left, Top, ActualWidth, ActualHeight);
Left = area.Left;
Top = area.Top;
Width = area.Width;
Height = area.Height;
if (null != maximizeButton)
{
maximizeButton.Content = "2";
}
isMaximized = true;
}