Popup：在一个单独的窗口中显示内容，该窗口浮动在当前应用程序窗口之上。

<Window x:Class="MaterialStorage.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="MainWindow" Height="350" Width="525"><Grid><Grid.RowDefinitions><RowDefinition Height="20"></RowDefinition><RowDefinition Height="*"></RowDefinition><RowDefinition Height="20"></RowDefinition></Grid.RowDefinitions><Grid.ColumnDefinitions><ColumnDefinition Width="*" ></ColumnDefinition></Grid.ColumnDefinitions><DockPanel Grid.Row="0" Grid.Column="1" Height="20" HorizontalAlignment="Stretch" Name="dockPanel1" Margin="0" VerticalAlignment="Top"><Menu Name="menu1" Width="Auto" DockPanel.Dock="Top"
VerticalAlignment="Center"  ><MenuItem Header="文件"><MenuItem Header="报表导出" Name="newMember" /><MenuItem Header="数据备份" Name="saveMember" /><Separator/><MenuItem Header="关闭" Name="exit" /></MenuItem><MenuItem Header="关于"  /></Menu></DockPanel><Grid Grid.Row="1" Grid.Column="1" Background="Beige"><Image Name="image1" Source="http://i.ssimg.cn/ssupload/2013/02/28/c92380f19fbb4127861c8ec3c836eb48.jpg" Height="200" Width="200"/><Popup IsOpen="False" PlacementTarget="{Binding ElementName=image1}" Placement="Bottom"><TextBlock FontSize="14" Background="LightGreen">Placement=Bottom</TextBlock></Popup><Popup IsOpen="True" PlacementTarget="{Binding ElementName=image1}" Placement="Top"><TextBlock FontSize="14" Background="LightGreen">Placement=Top</TextBlock></Popup><Popup IsOpen="True" PlacementTarget="{Binding ElementName=image1}" Placement="Left"><TextBlock FontSize="14" Background="LightGreen">Placement=Left</TextBlock></Popup><Popup IsOpen="True" PlacementTarget="{Binding ElementName=image1}" Placement="Right"><TextBlock FontSize="14" Background="LightGreen">Placement=Right</TextBlock></Popup></Grid><DockPanel Grid.Row="2" Grid.Column="1"  Height="20" HorizontalAlignment="Stretch" Name="dockPanel2" Margin="0" VerticalAlignment="Bottom"><StatusBar Height="20" Name="statusBar1" Width="Auto" DockPanel.Dock="Top" VerticalAlignment="Center"   ><TextBlock Name="statusValue">fff</TextBlock></StatusBar></DockPanel></Grid>
</Window>

转载于:https://www.cnblogs.com/zhuzhenyu/archive/2013/02/28/2937313.html