4
Expanderの展開ボタンの色を変更しようとしていますが、これを行う唯一の方法は、コントロールテンプレートを変更することです（設定するプロパティがないため）。テンプレートを設定したときにエキスパンダーが展開されないのはなぜですか？
私はShow Me The Templateを使用してAeroテーマのテンプレートを取得しました。私はその後、Expanderにテンプレートを設定しました他の変更はありません。それはうまく見えますが、ボタンをクリックしても、それは拡大されません。
これはなぜ起こっているのですか？私はそれが何かシンプルだと思っていますが、私はまだWPFを学んでおり、それを理解することができませんでした。ありがとうございました。ここで
は完全なコードです：<Expander Header="Test">
<Expander.Template>
<ControlTemplate TargetType="Expander" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}" CornerRadius="3,3,3,3" BorderBrush="{TemplateBinding Border.BorderBrush}" Background="{TemplateBinding Panel.Background}" SnapsToDevicePixels="True">
<DockPanel>
<ToggleButton IsChecked="False" Content="{TemplateBinding HeaderedContentControl.Header}" ContentTemplate="{TemplateBinding HeaderedContentControl.HeaderTemplate}" Foreground="{TemplateBinding TextElement.Foreground}" FontFamily="{TemplateBinding TextElement.FontFamily}" FontSize="{TemplateBinding TextElement.FontSize}" FontStretch="{TemplateBinding TextElement.FontStretch}" FontStyle="{TemplateBinding TextElement.FontStyle}" FontWeight="{TemplateBinding TextElement.FontWeight}" HorizontalContentAlignment="{TemplateBinding Control.HorizontalContentAlignment}" VerticalContentAlignment="{TemplateBinding Control.VerticalContentAlignment}" Padding="{TemplateBinding Control.Padding}" Name="HeaderSite" MinWidth="0" MinHeight="0" Margin="1,1,1,1" DockPanel.Dock="Top">
<ToggleButton.Style>
<Style TargetType="ToggleButton">
<Style.Resources>
<ResourceDictionary />
</Style.Resources>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border Padding="{TemplateBinding Control.Padding}">
<Grid Background="#00FFFFFF" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Ellipse Stroke="#FFA9A9A9" Name="circle" Width="19" Height="19" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Path Data="M1,1.5L4.5,5 8,1.5" Stroke="#FF666666" StrokeThickness="2" Name="arrow" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="False" />
<ContentPresenter RecognizesAccessKey="True" Content="{TemplateBinding ContentControl.Content}" ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}" ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}" Margin="4,0,0,0" HorizontalAlignment="Left" VerticalAlignment="Center" SnapsToDevicePixels="True" Grid.Column="1" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked">
<Setter TargetName="arrow" Property="Path.Data">
<Setter.Value>
<StreamGeometry>M1,4.5L4.5,1 8,4.5</StreamGeometry>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="UIElement.IsMouseOver">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF3C7FB1</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF222222</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="ButtonBase.IsPressed">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF526C7B</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="circle" Property="Shape.StrokeThickness">
<Setter.Value>
<s:Double>1.5</s:Double>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF003366</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ToggleButton.Style>
<ToggleButton.FocusVisualStyle>
<Style TargetType="IFrameworkInputElement">
<Style.Resources>
<ResourceDictionary />
</Style.Resources>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Border>
<Rectangle Stroke="#FF000000" StrokeThickness="1" StrokeDashArray="1 2" Margin="0,0,0,0" SnapsToDevicePixels="True" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ToggleButton.FocusVisualStyle>
</ToggleButton>
<ContentPresenter Content="{TemplateBinding ContentControl.Content}" ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}" ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}" Name="ExpandSite" Margin="{TemplateBinding Control.Padding}" HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}" Visibility="Collapsed" Focusable="False" DockPanel.Dock="Bottom" />
</DockPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Expander.IsExpanded">
<Setter TargetName="ExpandSite" Property="UIElement.Visibility" Value="{x:Static Visibility.Visible}" />
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="Expander.ExpandDirection">
<Setter TargetName="ExpandSite" Property="DockPanel.Dock" Value="{x:Static Dock.Right}" />
<Setter TargetName="HeaderSite" Property="DockPanel.Dock" Value="{x:Static Dock.Left}" />
<Setter TargetName="HeaderSite" Property="FrameworkElement.Style">
<Setter.Value>
<Style TargetType="ToggleButton">
<Style.Resources>
<ResourceDictionary />
</Style.Resources>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border Padding="{TemplateBinding Control.Padding}">
<Grid Background="#00FFFFFF" SnapsToDevicePixels="False">
<Grid.RowDefinitions>
<RowDefinition Height="19" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid>
<Grid.LayoutTransform>
<TransformGroup>
<TransformGroup.Children>
<RotateTransform Angle="-90" />
</TransformGroup.Children>
</TransformGroup>
</Grid.LayoutTransform>
<Ellipse Stroke="#FFA9A9A9" Name="circle" Width="19" Height="19" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Path Data="M1,1.5L4.5,5 8,1.5" Stroke="#FF666666" StrokeThickness="2" Name="arrow" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="False" />
</Grid>
<ContentPresenter RecognizesAccessKey="True" Content="{TemplateBinding ContentControl.Content}" ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}" ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}" Margin="0,4,0,0" HorizontalAlignment="Center" VerticalAlignment="Top" SnapsToDevicePixels="True" Grid.Row="1" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked">
<Setter TargetName="arrow" Property="Path.Data">
<Setter.Value>
<StreamGeometry>M1,4.5L4.5,1 8,4.5</StreamGeometry>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="UIElement.IsMouseOver">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF3C7FB1</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF222222</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="ButtonBase.IsPressed">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF526C7B</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="circle" Property="Shape.StrokeThickness">
<Setter.Value>
<s:Double>1.5</s:Double>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF003366</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Trigger.Value>
<x:Static Member="ExpandDirection.Right" />
</Trigger.Value>
</Trigger>
<Trigger Property="Expander.ExpandDirection">
<Setter TargetName="ExpandSite" Property="DockPanel.Dock" Value="{x:Static Dock.Top}" />
<Setter TargetName="HeaderSite" Property="DockPanel.Dock" Value="{x:Static Dock.Bottom}" />
<Setter TargetName="HeaderSite" Property="FrameworkElement.Style">
<Setter.Value>
<Style TargetType="ToggleButton">
<Style.Resources>
<ResourceDictionary />
</Style.Resources>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border Padding="{TemplateBinding Control.Padding}">
<Grid Background="#00FFFFFF" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid>
<Grid.LayoutTransform>
<TransformGroup>
<TransformGroup.Children>
<RotateTransform Angle="180" />
</TransformGroup.Children>
</TransformGroup>
</Grid.LayoutTransform>
<Ellipse Stroke="#FFA9A9A9" Name="circle" Width="19" Height="19" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Path Data="M1,1.5L4.5,5 8,1.5" Stroke="#FF666666" StrokeThickness="2" Name="arrow" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="False" />
</Grid>
<ContentPresenter RecognizesAccessKey="True" Content="{TemplateBinding ContentControl.Content}" ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}" ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}" Margin="4,0,0,0" HorizontalAlignment="Left" VerticalAlignment="Center" SnapsToDevicePixels="True" Grid.Column="1" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked">
<Setter TargetName="arrow" Property="Path.Data">
<Setter.Value>
<StreamGeometry>M1,4.5L4.5,1 8,4.5</StreamGeometry>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="UIElement.IsMouseOver">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF3C7FB1</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF222222</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="ButtonBase.IsPressed">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF526C7B</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="circle" Property="Shape.StrokeThickness">
<Setter.Value>
<s:Double>1.5</s:Double>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF003366</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Trigger.Value>
<x:Static Member="ExpandDirection.Up" />
</Trigger.Value>
</Trigger>
<Trigger Property="Expander.ExpandDirection">
<Setter TargetName="ExpandSite" Property="DockPanel.Dock" Value="{x:Static Dock.Left}" />
<Setter TargetName="HeaderSite" Property="DockPanel.Dock" Value="{x:Static Dock.Right}" />
<Setter TargetName="HeaderSite" Property="FrameworkElement.Style">
<Setter.Value>
<Style TargetType="ToggleButton">
<Style.Resources>
<ResourceDictionary />
</Style.Resources>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border Padding="{TemplateBinding Control.Padding}">
<Grid Background="#00FFFFFF" SnapsToDevicePixels="False">
<Grid.RowDefinitions>
<RowDefinition Height="19" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid>
<Grid.LayoutTransform>
<TransformGroup>
<TransformGroup.Children>
<RotateTransform Angle="90" />
</TransformGroup.Children>
</TransformGroup>
</Grid.LayoutTransform>
<Ellipse Stroke="#FFA9A9A9" Name="circle" Width="19" Height="19" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Path Data="M1,1.5L4.5,5 8,1.5" Stroke="#FF666666" StrokeThickness="2" Name="arrow" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="False" />
</Grid>
<ContentPresenter RecognizesAccessKey="True" Content="{TemplateBinding ContentControl.Content}" ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}" ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}" Margin="0,4,0,0" HorizontalAlignment="Center" VerticalAlignment="Top" SnapsToDevicePixels="True" Grid.Row="1" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked">
<Setter TargetName="arrow" Property="Path.Data">
<Setter.Value>
<StreamGeometry>M1,4.5L4.5,1 8,4.5</StreamGeometry>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="UIElement.IsMouseOver">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF3C7FB1</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF222222</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
<Trigger Property="ButtonBase.IsPressed">
<Setter TargetName="circle" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF526C7B</SolidColorBrush>
</Setter.Value>
</Setter>
<Setter TargetName="circle" Property="Shape.StrokeThickness">
<Setter.Value>
<s:Double>1.5</s:Double>
</Setter.Value>
</Setter>
<Setter TargetName="arrow" Property="Shape.Stroke">
<Setter.Value>
<SolidColorBrush>#FF003366</SolidColorBrush>
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>True</s:Boolean>
</Trigger.Value>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Trigger.Value>
<x:Static Member="ExpandDirection.Left" />
</Trigger.Value>
</Trigger>
<Trigger Property="UIElement.IsEnabled">
<Setter Property="TextElement.Foreground">
<Setter.Value>
<DynamicResource ResourceKey="{x:Static SystemColors.GrayTextBrushKey}" />
</Setter.Value>
</Setter>
<Trigger.Value>
<s:Boolean>False</s:Boolean>
</Trigger.Value>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Expander.Template>
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</Expander>
あなたはこれまでに質問したすべての質問に投稿しました！これで問題は解決しました。あなたの時間と助けに感謝します。おそらく、私は将来このためにBlendを使うべきでしょう。 – Rich