WPF組合框與自定義樣式，不能展開後點擊組合框內的組合框

我已經包括了以下樣式ComboBox，我正好在一年前找到WPFToolkit的一部分。WPF組合框與自定義樣式，不能展開後點擊組合框內的組合框

它缺少一個基本的功能，也就是說，如果我點擊ComboBox的TextBox，我希望下拉菜單像往常一樣展開。在此模板中，只能通過直接點擊ComboBoxToggleButton打開下拉菜單。

我不知道要在模板樣式中尋找什麼，可以請你指導我嗎？

模板風格：

<ControlTemplate x:Key="ComboBoxToggleButton" 
       TargetType="{x:Type ToggleButton}"> 
    <ControlTemplate.Resources> 
     <Storyboard x:Key="HoverOn"> 
      <DoubleAnimation Duration="00:00:00.1000000" 
          Storyboard.TargetName="rectangleOver" 
          Storyboard.TargetProperty="Opacity" 
          To="0.8" /> 
      <ColorAnimation Duration="00:00:00.1000000" 
          Storyboard.TargetName="Background" 
          Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" 
          To="#FFFFFFFF" /> 
     </Storyboard> 
     <Storyboard x:Key="HoverOff"> 
      <DoubleAnimation Duration="00:00:00.4000000" 
          Storyboard.TargetName="rectangleOver" 
          Storyboard.TargetProperty="Opacity" 
          To="0" /> 
      <ColorAnimation Duration="00:00:00.4000000" 
          Storyboard.TargetName="Background" 
          Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" 
          To="#FFffffff" /> 
     </Storyboard> 
     <Storyboard x:Key="PressedOn"> 
      <DoubleAnimation Duration="00:00:00.1000000" 
          Storyboard.TargetName="rectanglePress" 
          Storyboard.TargetProperty="Opacity" 
          To="0.8" /> 
      <ColorAnimation Duration="00:00:00.1000000" 
          Storyboard.TargetName="Background" 
          Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" 
          To="#FFFFFFFF" /> 
     </Storyboard> 
     <Storyboard x:Key="PressedOff"> 
      <DoubleAnimation Duration="00:00:00.4000000" 
          Storyboard.TargetName="rectanglePress" 
          Storyboard.TargetProperty="Opacity" 
          To="0" /> 
      <ColorAnimation Duration="00:00:00.4000000" 
          Storyboard.TargetName="Background" 
          Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" 
          To="#FFffffff" /> 
     </Storyboard> 
     <Storyboard x:Key="CheckedOn"> 
      <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" 
              Storyboard.TargetName="BackgroundChecked" 
              Storyboard.TargetProperty="(UIElement.Opacity)"> 
       <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" 
             Value="1" /> 
      </DoubleAnimationUsingKeyFrames> 
     </Storyboard> 
     <Storyboard x:Key="CheckedOff"> 
      <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" 
              Storyboard.TargetName="BackgroundChecked" 
              Storyboard.TargetProperty="(UIElement.Opacity)"> 
       <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" 
             Value="0" /> 
      </DoubleAnimationUsingKeyFrames> 
     </Storyboard> 
    </ControlTemplate.Resources> 
    <Grid x:Name="grid"> 
     <Rectangle x:Name="Background" 
        Fill="#ffffff" 
        Stroke="#ffc6c6c6" 
        RadiusX="3" 
        RadiusY="3" 
        IsHitTestVisible="false" /> 
     <Rectangle x:Name="BackgroundChecked" 
        Margin="1" 
        IsHitTestVisible="false" 
        Opacity="0"> 
      <Rectangle.Fill> 
       <SolidColorBrush Color="{DynamicResource WhiteColor}" /> 
      </Rectangle.Fill> 
     </Rectangle> 
     <Rectangle x:Name="rectangleOver" 
        Width="15" 
        Stroke="#FFE8E8E8" 
        HorizontalAlignment="Right" 
        Opacity="0" 
        Fill="{DynamicResource MouseOverBrush}" /> 
     <Rectangle x:Name="rectanglePress" 
        Width="15" 
        Stroke="#FC9E9D9B" 
        HorizontalAlignment="Right" 
        Opacity="0" 
        Fill="{DynamicResource PressedBrush}" /> 
     <Rectangle x:Name="DisabledVisualElement" 
        Margin="1" 
        Fill="{DynamicResource DisabledBackgroundBrush}" 
        IsHitTestVisible="false" 
        Visibility="Collapsed" /> 
     <Path x:Name="BtnArrow" 
       Margin="0,0,4,0" 
       Width="6" 
       Fill="{DynamicResource GlyphBrush}" 
       Stretch="Uniform" 
       HorizontalAlignment="Right" 
       Data="F1 M 301.14,-189.041L 311.57,-189.041L 306.355,-182.942L 301.14,-189.041 Z " /> 
    </Grid> 
    <ControlTemplate.Triggers> 
     <Trigger Property="IsPressed" 
       Value="True"> 
      <Trigger.ExitActions> 
       <BeginStoryboard Storyboard="{StaticResource PressedOff}" 
           x:Name="PressedOff_BeginStoryboard" /> 
      </Trigger.ExitActions> 
      <Trigger.EnterActions> 
       <BeginStoryboard Storyboard="{StaticResource PressedOn}" 
           x:Name="PressedOn_BeginStoryboard" /> 
      </Trigger.EnterActions> 
     </Trigger> 
     <Trigger Property="IsMouseOver" 
       Value="true"> 
      <Trigger.ExitActions> 
       <BeginStoryboard Storyboard="{StaticResource HoverOff}" 
           x:Name="HoverOff_BeginStoryboard" /> 
      </Trigger.ExitActions> 
      <Trigger.EnterActions> 
       <BeginStoryboard Storyboard="{StaticResource HoverOn}" /> 
      </Trigger.EnterActions> 

     </Trigger> 
     <Trigger Property="IsChecked" 
       Value="true"> 
      <Trigger.ExitActions> 
       <BeginStoryboard Storyboard="{StaticResource CheckedOff}" 
           x:Name="CheckedOff_BeginStoryboard" /> 
      </Trigger.ExitActions> 
      <Trigger.EnterActions> 
       <BeginStoryboard Storyboard="{StaticResource CheckedOn}" 
           x:Name="CheckedOn_BeginStoryboard" /> 
      </Trigger.EnterActions> 
     </Trigger> 
     <Trigger Property="IsEnabled" 
       Value="False"> 
      <Setter Property="Foreground" 
        Value="{DynamicResource DisabledForegroundBrush}" /> 
      <Setter Property="Visibility" 
        TargetName="DisabledVisualElement" 
        Value="Visible" /> 
      <Setter Property="Fill" 
        TargetName="Background" 
        Value="{DynamicResource DisabledBackgroundBrush}" /> 
     </Trigger> 
    </ControlTemplate.Triggers> 
</ControlTemplate> 

<ControlTemplate x:Key="ComboBoxTextBox" 
       TargetType="{x:Type TextBox}"> 
    <Border x:Name="PART_ContentHost" 
      Focusable="False" 
      Background="{TemplateBinding Background}" /> 
</ControlTemplate> 

<Style TargetType="{x:Type ComboBox}"> 
    <Setter Property="SnapsToDevicePixels" 
      Value="true" /> 
    <Setter Property="HorizontalContentAlignment" 
      Value="Stretch" /> 
    <Setter Property="VerticalContentAlignment" 
      Value="Center" /> 
    <Setter Property="FontSize" 
      Value="13" /> 
    <Setter Property="FontWeight" 
      Value="Bold" /> 
    <Setter Property="Padding" 
      Value="6,2,25,2" /> 
    <Setter Property="Margin" 
      Value="3" /> 
    <Setter Property="ToolTipService.ShowOnDisabled" 
      Value="True" /> 
    <Setter Property="Template" 
      Value="{DynamicResource ComboBoxTemplate}" /> 
    <Setter Property="Validation.ErrorTemplate" 
      Value="{StaticResource SablonaChybovehoHlaseni}" /> 
</Style> 

<ControlTemplate x:Key="ComboBoxTemplate" 
       TargetType="{x:Type ComboBox}"> 
    <ControlTemplate.Resources> 
     <Storyboard x:Key="FocusedOn"> 
      <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" 
              Storyboard.TargetName="FocusVisualElement" 
              Storyboard.TargetProperty="(UIElement.Opacity)"> 
       <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" 
             Value="1" /> 
      </DoubleAnimationUsingKeyFrames> 
     </Storyboard> 
     <Storyboard x:Key="FocusedOff"> 
      <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" 
              Storyboard.TargetName="FocusVisualElement" 
              Storyboard.TargetProperty="(UIElement.Opacity)"> 
       <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" 
             Value="0" /> 
      </DoubleAnimationUsingKeyFrames> 
     </Storyboard> 
    </ControlTemplate.Resources> 
    <Grid> 
     <ToggleButton Grid.Column="2" 
         Template="{DynamicResource ComboBoxToggleButton}" 
         x:Name="ToggleButton" 
         Focusable="false" 
         IsChecked="{Binding Path=IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" 
         ClickMode="Press" /> 
     <ContentPresenter HorizontalAlignment="Stretch" 
          Margin="3,3,23,3" 
          x:Name="ContentSite" 
          VerticalAlignment="Top" 
          Content="{TemplateBinding SelectionBoxItem}" 
          ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" 
          IsHitTestVisible="True"> 
      <ContentPresenter.ContentTemplate> 
       <DataTemplate> 
        <TextBlock Text="{Binding}" 
           TextWrapping="Wrap" /> 
       </DataTemplate> 
      </ContentPresenter.ContentTemplate> 
     </ContentPresenter> 
     <!--Textbox for ComboBox--> 
     <!--Set transparent background of TextBox--> 
     <TextBox Visibility="Hidden" 
       Template="{DynamicResource ComboBoxTextBox}" 
       HorizontalAlignment="Stretch" 
       Margin="3,3,23,3" 
       x:Name="PART_EditableTextBox" 
       Style="{x:Null}" 
       VerticalAlignment="Top" 
       Focusable="True" 
       Background="Transparent" 
       TextWrapping="Wrap" 
       IsReadOnly="{TemplateBinding IsReadOnly}" /> 
     <Rectangle x:Name="DisabledVisualElement" 
        Fill="{DynamicResource DisabledBackgroundBrush}" 
        Stroke="{DynamicResource DisabledBorderBrush}" 
        RadiusX="3" 
        RadiusY="3" 
        IsHitTestVisible="false" 
        Opacity="0" /> 
     <Rectangle x:Name="FocusVisualElement" 
        Margin="-1" 
        RadiusX="3" 
        RadiusY="3" 
        Stroke="{DynamicResource FocusBrush}" 
        StrokeThickness="1" 
        IsHitTestVisible="false" 
        Opacity="0" /> 
     <Popup IsOpen="{TemplateBinding IsDropDownOpen}" 
       Placement="Bottom" 
       x:Name="Popup" 
       Focusable="False" 
       AllowsTransparency="True" 
       PopupAnimation="Slide" 
       Margin="0,1,0,0"> 
      <Grid MaxHeight="{TemplateBinding MaxDropDownHeight}" 
        MinWidth="{TemplateBinding ActualWidth}" 
        x:Name="DropDown" 
        SnapsToDevicePixels="True"> 
       <Border x:Name="DropDownBorder" 
         Margin="0,-1,0,0" 
         BorderBrush="{DynamicResource ControlBorderBrush}" 
         BorderThickness="1" 
         CornerRadius="0,0,3,3" 
         Background="{DynamicResource WhiteColorBrush}"> 
        <!--ControlBackgroundBrush--> 
        <ScrollViewer Margin="4,6,4,6" 
            SnapsToDevicePixels="True" 
            HorizontalScrollBarVisibility="Auto" 
            VerticalScrollBarVisibility="Auto" 
            CanContentScroll="True"> 
         <StackPanel IsItemsHost="True" 
            KeyboardNavigation.DirectionalNavigation="Contained" /> 

        </ScrollViewer> 
       </Border> 
      </Grid> 
     </Popup> 
    </Grid> 
    <ControlTemplate.Triggers> 
     <Trigger Property="IsFocused" 
       Value="True"> 
      <Trigger.ExitActions> 
       <BeginStoryboard Storyboard="{StaticResource FocusedOff}" 
           x:Name="FocusedOff_BeginStoryboard" /> 
      </Trigger.ExitActions> 
      <Trigger.EnterActions> 
       <BeginStoryboard Storyboard="{StaticResource FocusedOn}" /> 
      </Trigger.EnterActions> 
      <Setter Property="CornerRadius" 
        TargetName="DropDownBorder" 
        Value="3" /> 
     </Trigger> 
     <Trigger Property="HasItems" 
       Value="false"> 
      <Setter Property="MinHeight" 
        Value="95" 
        TargetName="DropDownBorder" /> 
     </Trigger> 
     <Trigger Property="IsEnabled" 
       Value="false"> 
      <Setter Property="Foreground" 
        Value="{DynamicResource DisabledForegroundBrush}" /> 
      <Setter Property="Opacity" 
        TargetName="DisabledVisualElement" 
        Value="1" /> 
     </Trigger> 
     <Trigger Property="IsGrouping" 
       Value="true"> 
      <Setter Property="ScrollViewer.CanContentScroll" 
        Value="false" /> 
     </Trigger> 
     <Trigger Property="AllowsTransparency" 
       SourceName="Popup" 
       Value="true"> 
      <Setter Property="CornerRadius" 
        Value="4" 
        TargetName="DropDownBorder" /> 
      <Setter Property="Margin" 
        Value="0,2,0,0" 
        TargetName="DropDownBorder" /> 
     </Trigger> 
     <Trigger Property="IsEditable" 
       Value="true"> 
      <Setter Property="IsTabStop" 
        Value="false" /> 
      <Setter Property="Visibility" 
        Value="Visible" 
        TargetName="PART_EditableTextBox" /> 
      <Setter Property="Visibility" 
        Value="Hidden" 
        TargetName="ContentSite" /> 
     </Trigger> 
    </ControlTemplate.Triggers> 
</ControlTemplate>

來源

2011-06-29 Honza Pačuta

有兩個用例的組合框。首先是IsEditable爲false時。在這種情況下，用戶被限制爲選擇預定義的項目。第二種是當IsEditable爲真時，這種情況下允許用戶輸入文本以及選擇預定義的項目。

使用默認的Aero風格，單擊「文本」區域（即IsEditable爲true時）不會顯示下拉列表。點擊重點/選擇文字。其他樣式將打開下拉列表。

要完成此操作，需要在其他控件的頂部放置一個透明ToggleButton，以切換下拉可見性。喜歡的東西：

<Grid Grid.IsSharedSizeScope="true"> 
    <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="1"/> 
     <ColumnDefinition Width="*"/> 
     <ColumnDefinition Width="Auto" 
          SharedSizeGroup="ComboBoxButton"/> 
    </Grid.ColumnDefinitions> 
    <TextBox x:Name="PART_EditableTextBox" 
      Grid.Column="1" 
      Style="{StaticResource ComboBoxEditableTextBox}" 
      IsReadOnly="{Binding Path=IsReadOnly,RelativeSource={RelativeSource TemplatedParent}}" 
      Margin="{TemplateBinding Padding}" 
      HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" 
      VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/> 
    <ToggleButton Background="{x:Null}" 
        Grid.ColumnSpan="3" 
        Style="{StaticResource ComboBoxTransparentButtonStyle}" 
        IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"/> 
</Grid>

這是從紅月的默認樣式，你可以從here獲得（或者直接從here下載）拉。

來源

2011-06-29 13:11:32 CodeNaked

謝謝你，你讓我走向正確的方向。 '<切換按鈕Grid.ColumnSpan =「3」不透明度=「0」調焦=「假」器isChecked =「{：我與其他控件的頂部添加不可見的切換按鈕，如在你的例子解決了它Binding Path = IsDropDownOpen，Mode = TwoWay，RelativeSource = {RelativeSource TemplatedParent}}「 ClickMode =」Press「/>' –

WPF組合框與自定義樣式，不能展開後點擊組合框內的組合框

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