WPF弹出带蒙板的消息框

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.

消息窗弹出时

///

/// 弹出消息框

///

/// 消息

/// 父级窗体

public static void ShowDialog(string message, Window owner)

{

//蒙板

Grid layer = new Grid() {
Background = new SolidColorBrush(Color.FromArgb(128, 0, 0, 0)) };

//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

///

/// 窗体关闭事件

///

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, 0) 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 = orig