Silverlight ChildWindow没有正确重新定位
我正在使用ChildWindow（Silverlight），它还包含一些扩展器控件。在一种情况下，当扩展器控件扩展时，子窗口的底部向下扩展到底部的屏幕，但仍然在顶部留出空间。
如何重新定位子窗口以使其在屏幕中居中，就像我刚打开子窗口一样？ （这很容易，但我认为不可行）
（人工干预）
我已经浏览了ContentRoot的RenderTransform，我在该集合中有六个转换，其中两个是TranslateTransforms。如果我更新第一个的X / Y属性（不知道我应该改变哪两个）并使用整个TransformGroup更新RenderTransform属性，我成功地在屏幕上移动ChildWindow - 但它不是表现得像我期待的那样。
当扩展器控件扩展时，我也不知道为什么ChildWindow_SizeChanged事件不会触发。窗户的尺寸确实发生变化，为什么不开火呢？
好的 - 问题太多了，只需要回答第一个问题，剩下的就是填写我对WPF / Silverlight如何工作的了解......
问候，
理查德
没有找到相关结果
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坛沤疲撑拆
/// <summary> /// Centers the Silverlight ChildWindow in screen. /// </summary> /// <remarks> /// 1) Visual TreeHelper will grab the first element within a ChildWindow - this is the Chrome (Title Bar, Close button, etc.) /// 2) ContentRoot - is the first element within that Chrome for a ChildWindow - which is named this within the template of the control (Childwindow) /// 3) Using the container (named ContentRoot), pull out all the "Transforms" which move, or alter the layout of a control /// TranslateTransform - provides X,Y coordinates on where the control should be positioned /// 4) Using a Linq expression, grab teh last TransLateTransfrom from the TransformGroup /// 5) Reset the TranslateTransform to point 0,0 which should reference the ChildWindow to be the upper left of the window. However, this is setting /// is probably overridden by a default behaviour to always reset the window window to the middle of the screen based on it's size, and the size of the browser /// I would have liked to animate this, but this likely requires a storyboard event that I don't have time for at this moment. /// /// This entire process to move, or alter a window in WPF was a total learning experience. /// </remarks> /// <param name="childWindow">The child window. public static void CenterInScreen(this ChildWindow childWindow) { var root = VisualTreeHelper.GetChild(childWindow, 0) as FrameworkElement; if (root == null) { return; } var contentRoot = root.FindName("ContentRoot") as FrameworkElement; if (contentRoot == null) { return; } var transformgroup = contentRoot.RenderTransform as TransformGroup; if (transformgroup == null) { return; } TranslateTransform transform = transformgroup.Children.OfType<TranslateTransform>().LastOrDefault(); if (transform == null) { return; } transform.X = 0; transform.Y = 0; }