自定义Expander形式2

另一种Expander 自定义效果：

DemoWindowStyles.xaml:

 1 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 2     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 3  <ControlTemplate x:Key="ToggleButtonTemp" TargetType="{x:Type ToggleButton}">
 4         <Border x:Name="bd"  
 5                     BorderThickness="1"  
 6                     CornerRadius="1,1,1,1">
 7             <Border.Background>
 8                 <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
 9                     <GradientStop Color="LightGreen" Offset="0"/>
10                     <GradientStop Color="White" Offset="1"/>
11                 </LinearGradientBrush>
12             </Border.Background>
13             <Border.BorderBrush>
14                 <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
15                     <GradientStop Color="Black" Offset="0"/>
16                     <GradientStop Color="Gray" Offset="1"/>
17                 </LinearGradientBrush>
18             </Border.BorderBrush>
19             <Path  Fill="Black" x:Name="p"  
20                       Data="M 0,0 L 4,5 L 8,0 Z"  
21                       HorizontalAlignment="Center"  
22                       VerticalAlignment="Center"/>
23         </Border>
24         <ControlTemplate.Triggers>
25             <Trigger Property="IsMouseOver" Value="True">
26                 <Setter TargetName="bd" Property="Background">
27                     <Setter.Value>
28                         <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
29                             <GradientStop Color="DarkGreen" Offset="0"/>
30                             <GradientStop Color="White" Offset="1"/>
31                         </LinearGradientBrush>
32                     </Setter.Value>
33                 </Setter>
34             </Trigger>
35             <Trigger Property="IsChecked" Value="True">
36                 <Setter TargetName="p" Property="Data"  
37                                 Value="M 0,5 L 8,5 L 4,0 Z"/>
38             </Trigger>
39             <Trigger Property="IsEnabled" Value="True">
40                 <Setter TargetName="bd" Property="BorderBrush" Value="Gray"/>
41                 <Setter TargetName="p" Property="Fill" Value="Gray"/>
42             </Trigger>
43         </ControlTemplate.Triggers>
44     </ControlTemplate>
45     <!-- 
46             Expnder的样式 
47         -->
48     <Style x:Key="ExpanderStyle1" TargetType="{x:Type Expander}">
49         <Setter Property="Template">
50             <Setter.Value>
51                 <ControlTemplate TargetType="{x:Type Expander}">
52                     <Grid>
53                         <Grid.RowDefinitions>
54                             <RowDefinition Height="auto"/>
55                             <RowDefinition x:Name="gr" Height="auto"/>
56                         </Grid.RowDefinitions>
57                         <BulletDecorator Grid.Row="0" VerticalAlignment="Center" >
58                             <BulletDecorator.Bullet>
59                                 <ToggleButton Height="18" Width="640"  HorizontalAlignment="Stretch" VerticalAlignment="Center" Template="{StaticResource ToggleButtonTemp}"  
60                                                   IsChecked="{Binding Path=IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"  
61                                                   OverridesDefaultStyle="True" Margin="0,0"/>
62                             </BulletDecorator.Bullet>
63                         </BulletDecorator>
64                         <Border x:Name="scv" BorderThickness="1" BorderBrush="White" Grid.Row="1" >
65                             <ContentPresenter x:Name="ExpandSite" 
66                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
67                                    Margin="{TemplateBinding Padding}" 
68                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}" 
69                                    Focusable="false" Visibility="Collapsed" 
70                                    DockPanel.Dock="Bottom"/>
71                         </Border>
72                     </Grid>
73                     <ControlTemplate.Triggers>
74                         <Trigger Property="IsExpanded" Value="True">                        
75                             <Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>
76                         </Trigger>
77                     </ControlTemplate.Triggers>
78                 </ControlTemplate>
79             </Setter.Value>
80         </Setter>
81     </Style>
82 </ResourceDictionary>

在要使用的WPF中App.xaml中：

 1 <Application x:Class="******.App"
 2              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4              StartupUri="MainWindow.xaml">
 5     <Application.Resources>
 6         <ResourceDictionary>
 7             <!--使用资源字典的合并资源功能-->
 8             <ResourceDictionary.MergedDictionaries>
 9                 <!--在这里可以指定多个资源文件名-->
10                 <ResourceDictionary     Source="****/DemoWindowStyles.xaml"/>
11             </ResourceDictionary.MergedDictionaries>
12         </ResourceDictionary>
13     </Application.Resources>
14 </Application>

在MainWindow中使用：

 <Expander ExpandDirection="Down" Height="53" Width="640" DockPanel.Dock="Top" Margin="0,0,0,0" IsExpanded="False"
                  Style="{StaticResource ExpanderStyle1}">
            <Menu x:Name="menu"****************
*********************************************
              </Menu>
  </Expander>