按需刷新 WPF 窗口
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/14182829/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
refreshing a WPF window on demand
提问by Idov
I noticed that if I move my WPF window through code, I will only see that changes when the window refreshes (if I minimize and then maximize it).
Is it possible to refresh the GUI of a WPF on demand?
我注意到如果我通过代码移动我的 WPF 窗口，我只会在窗口刷新时看到变化（如果我最小化然后最大化它）。
是否可以按需刷新 WPF 的 GUI？
EDIT: I'm actually trying to make this window follow another window.
编辑：我实际上试图让这个窗口跟随另一个窗口。
So I'm hooking to the other window's events:
所以我挂到另一个窗口的事件：
m_wndParent = parent;
this.Owner = m_wndParent;
m_wndParent.SizeChanged += ParentSizeChanged;
m_wndParent.LayoutUpdated += ParentLocationChanged;
and then I change my window's position:
然后我改变我的窗口的位置：
private void ParentLocationChanged(object sender, EventArgs e)
{
Window parent = sender as Window;
this.Top = parent.Top;
this.Left = parent.Left;
this.UpdateLayout();
}
采纳答案by Clemens
You should add your ParentLocationChangedhandler to the LocationChangedevent instead of LayoutUpdated(which serves a completely different purpose).
您应该将您的ParentLocationChanged处理程序添加到LocationChanged事件而不是LayoutUpdated（它用于完全不同的目的）。
m_wndParent.LocationChanged += ParentLocationChanged;
private void ParentLocationChanged(object sender, EventArgs e)
{
var parent = sender as Window;
Top = parent.Top;
Left = parent.Left;
}
回答by Matthias
You should hook up parent.LocationChanged and then call InvalidateVisual. See MSDN for more details.
您应该连接 parent.LocationChanged，然后调用 InvalidateVisual。有关更多详细信息，请参阅MSDN。
