WPF弹出带蒙板的消息框

效果图

思路

拿到父级窗体的内容,放入一个容器里,再在容器里放入一个半透明层.将整个容器赋给父级窗体的内容.

关闭时反向操作.

代码

消息窗弹出时

 /// <summary>
 /// 弹出消息框
 /// </summary>
 /// <param name="message">消息</param>
 /// <param name="owner">父级窗体</param>
 public static void ShowDialog(string message, Window owner)
 {
     //蒙板
     Grid layer = new Grid() { Background = new SolidColorBrush(Color.FromArgb(, , , )) };
     //父级窗体原来的内容
     UIElement original = owner.Content as UIElement;
     owner.Content = null;
     //容器Grid
     Grid container = new Grid();
     container.Children.Add(original);//放入原来的内容
     container.Children.Add(layer);//在上面放一层蒙板
     //将装有原来内容和蒙板的容器赋给父级窗体
     owner.Content = container;

     //弹出消息框
     MessageBox box = new MessageBox() { Owner = owner };
     box.tbc_message.Text = message;
     box.ShowDialog();
 }

消息框关闭时

 /// <summary>
 /// 窗体关闭事件
 /// </summary>
 private void Window_Closed(object sender, EventArgs e)
 {
     //容器Grid
     Grid grid = this.Owner.Content as Grid;
     //父级窗体原来的内容
     UIElement original = VisualTreeHelper.GetChild(grid, ) as UIElement;
     //将父级窗体原来的内容在容器Grid中移除
     grid.Children.Remove(original);
     //赋给父级窗体
     this.Owner.Content = original;
 }

源码下载:MessageBoxWithLayer.zip