窗口大小调整时，WPF会同时更改属性

Question

我有无边界的WPF窗口（WindowStyle == None）以及下面的手动表单最大化/恢复代码：

var currentScreen = this.CurrentScreen();
if (windowState == System.Windows.WindowState.Normal)
{
    windowState = System.Windows.WindowState.Maximized;
    left = Left;
    top = Top;
    width = Width;
    height = Height;
    Left = currentScreen.WorkingArea.Left;
    Top = currentScreen.WorkingArea.Top;
    Width = currentScreen.WorkingArea.Width;
    Height = currentScreen.WorkingArea.Height;
}
else
{
    windowState = System.Windows.WindowState.Normal;
    Left = left;
    Top = top;
    Width = width;
    Height = height;
}

但尺寸变化分几步执行：左侧位置变化，顶部位置变化，宽度变化和高度变化。如何同时更改所有这些属性？