我希望在wpf中获得以下效果
主窗口如下所示 当你点击朋友面板时,朋友列表应该扩展到窗外
当我点击该列表中的项目时,我必须能够捕获该事件并在主窗口上处理 如何在wpf中实现呢?
我尝试过使用扩展程序,但它没有显示不符合窗口大小的内容。它只展示了内容的一部分
答案 0 :(得分:5)
您可以使用Popup
控件并根据单击的按钮设置其PlacementTarget
和Placement
。简单的例子:
<Grid>
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
<Popup StaysOpen="False" Width="300" Height="200" x:Name="MyPopup">
<Popup.Child>
<StackPanel Background="Bisque"></StackPanel>
</Popup.Child>
</Popup>
<Button Margin="25,25,0,25" HorizontalAlignment="Right" Width="100" Click="ButtonBase_OnClick">First</Button>
<Button Grid.Row="1" Margin="25,25,0,25" HorizontalAlignment="Right" Width="100" Click="ButtonBase_OnClick">Second</Button>
<Button Grid.Row="2" Margin="25,25,0,25" HorizontalAlignment="Right" Width="100" Click="ButtonBase_OnClick">Third</Button>
</Grid>
private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
{
MyPopup.IsOpen = false;
MyPopup.PlacementTarget = sender as UIElement;
MyPopup.Placement = PlacementMode.Right;
MyPopup.AllowsTransparency = true;
MyPopup.PopupAnimation = PopupAnimation.Fade;
MyPopup.IsOpen = true;
}