編集可能なComboBoxの動作を変更したいと思います。編集可能なComboBoxの動作を変更します
テキストボックス(PART_EditableTextBox)は、IsEditableがtrueのときにのみ表示されます。およびComboBoxが開いているときは。私はControlTemplate.Triggers部分にこれを働いてきた:
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsEditable" Value="True" />
<Condition Property="IsDropDownOpen" Value="True" />
</MultiTrigger.Conditions>
<Setter TargetName="PART_EditableTextBox" Property="Visibility" Value="Visible"/>
</MultiTrigger>
問題はPART_EditableTextBoxが隠されているとき、コンテンツが表示されていないということです。だから私はアイテムを選択した後、ComboBoxは空白のままです。これは、IsEditable = trueの場合にのみ当てはまります。
以下は完全なComboBoxテンプレートコードです。
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Animations.xaml"/>
<ResourceDictionary Source="Brushes.xaml"/>
</ResourceDictionary.MergedDictionaries>
<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
<ControlTemplate x:Key="EditableComboBoxToggleButton" TargetType="ToggleButton">
<ControlTemplate.Resources>
</ControlTemplate.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<!-- The drop down button on the right -->
<Border Grid.ColumnSpan="2" BorderBrush="#FFFFFFFF" BorderThickness="1,1,1,1" CornerRadius="4,4,4,4">
<Border x:Name="Border" Background="{StaticResource ButtonBaseBrush}" BorderBrush="{StaticResource ButtonInnerBorderBrush}" BorderThickness="1,1,1,1" CornerRadius="4,4,4,4">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.507*"/>
<RowDefinition Height="0.493*"/>
</Grid.RowDefinitions>
<Border Opacity="0" HorizontalAlignment="Stretch" x:Name="glow" Width="Auto" Grid.RowSpan="2" CornerRadius="4,4,4,4" Background="{StaticResource ButtonLitBrush}" />
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" Width="Auto" Grid.RowSpan="2"/>
<Border HorizontalAlignment="Stretch" Margin="0,0,0,0" x:Name="shine" Width="Auto" CornerRadius="4,4,0,0" Background="{StaticResource ButtonGlowOverlay}" />
</Grid>
</Border>
</Border>
<!-- The white area where the selected item is displayed (also part of the button) -->
<Border
Grid.Column="0"
CornerRadius="2,0,0,2"
Margin="1"
Background="{StaticResource WindowBackgroundBrush}"
BorderBrush="Black"
BorderThickness="1" />
<!-- The down-arrow -->
<Path
x:Name="Arrow"
Grid.Column="1"
Fill="White"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Data="M 0 0 L 4 4 L 8 0 Z"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Opacity" TargetName="shine" Value="0.4"/>
<Setter Property="Background" TargetName="Border" Value="#DCE38819"/>
<Setter Property="Visibility" TargetName="glow" Value="Hidden"/>
</Trigger>
<Trigger Property="ToggleButton.IsMouseOver" Value="True">
<Trigger.EnterActions>
<BeginStoryboard Storyboard="{StaticResource Timeline1}"/>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard x:Name="Timeline2_BeginStoryboard" Storyboard="{StaticResource Timeline2}"/>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="TextBox">
<Border x:Name="PART_ContentHost" Focusable="False" Background="{TemplateBinding Background}" />
</ControlTemplate>
<Style x:Key="EditableGlassComboBox" TargetType="ComboBox">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
<Setter Property="MinWidth" Value="120"/>
<Setter Property="MinHeight" Value="20"/>
<Setter Property="Height" Value="34" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton"
Template="{StaticResource EditableComboBoxToggleButton}"
IsEnabled="{TemplateBinding IsEnabled}"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Press">
</ToggleButton>
<ContentPresenter
Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="3,3,23,3"
VerticalAlignment="Center"
HorizontalAlignment="Stretch" />
<TextBox x:Name="PART_EditableTextBox"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Background="Red"
Grid.Column="0"
Style="{x:Null}"
Template="{StaticResource ComboBoxTextBox}"
FontSize="16"
Margin="5,5,23,5"
Focusable="True"
Visibility="Collapsed"
IsReadOnly="{TemplateBinding IsReadOnly}"/>
<Popup
Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Slide">
<Grid
Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border
x:Name="DropDownBorder"
Background="{StaticResource WindowBackgroundBrush}"
BorderThickness="1"
BorderBrush="{StaticResource ComboItemsBorderBrush}"/>
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
<Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsEditable" Value="True" />
<Condition Property="IsDropDownOpen" Value="True" />
</MultiTrigger.Conditions>
<Setter TargetName="PART_EditableTextBox" Property="Visibility" Value="Visible"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
</Style.Triggers>
</Style>
あなたのユーザーコントロールのコードを追加できますか? – Narendra