WPF 气泡提示框的简单实现

自己挖了一个大坑,,,然后苦逼的在码代码重写样式! 废物不多少

直接上代码

1 <TextBox Name="account" GotFocus="account_GotFocus" LostFocus="account_LostFocus" Style="{StaticResource LabelTextBox}" xl:ControlAttachProperty.Label="用户名:"  Foreground="Black" Margin="10,10,273,271" Width="Auto" />

先在前台创建一个TextBox,然后各种附加的属性加上去:如图所示 

1 <Popup Name="pop3" AllowsTransparency="True" StaysOpen="True" PopupAnimation="Fade" IsOpen="False"  PlacementTarget="{Binding ElementName=account}" Placement="Right" >
2       <Label Style="{StaticResource tipLable}">
3               <StackPanel Orientation="Horizontal">
4                    <Label Content="请输入用户名"/>
5               </StackPanel>
6         </Label>
7  </Popup>

效果图:

样式代码:

 1    <Style TargetType="Label" x:Key="tipLable">
 2         <Setter Property="Template">
 3             <Setter.Value>
 4                 <ControlTemplate TargetType="{x:Type Label}">
 5                     <Grid>
 6                         <Border CornerRadius="4" BorderBrush="Black" BorderThickness="1" VerticalAlignment="Top" Margin="8.5,0,0,0" Background="Yellow" HorizontalAlignment="Left" Padding="5">
 7                             <ContentPresenter />
 8                         </Border>
 9                         <Canvas Width="10" Height="10" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,10,0,0" Background="Transparent">
10                             <Path Stroke="Black" StrokeThickness="0.5" Fill="Yellow">
11                                 <Path.Data>
12                                     <PathGeometry Figures="M 10,0 L 10,0,0,5  L 0,5,10,10"/>
13                                 </Path.Data>
14                             </Path>
15                         </Canvas>
16                     </Grid>
17                 </ControlTemplate>
18             </Setter.Value>
19         </Setter>
20     </Style>

本文原创出处：http://www.cnblogs.com/PettyHandSome/

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