Changement de sélection sur combobox

**norea** · 26/06/2009, 08h38

Bonjour,
J'ai réécrit un controltemplate pour un combobox, et je cherche à ce que au clic de la zone texte, la popup de sélection soit déployée.

voici mon Style de Combobox :

Code :

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    <Style x:Key="ComboBoxToggleButton" TargetType="ToggleButton">
        <Setter Property="Background" >
            <Setter.Value>
                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                    <GradientStop Color="#FF8E8E8E" Offset="0"></GradientStop>
                    <GradientStop Color="#FFCCCCCC" Offset="1"></GradientStop>
                </LinearGradientBrush>
            </Setter.Value>
        </Setter>
        <Setter Property="Focusable" Value="false"/>
        <Setter Property="IsChecked" Value="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"/>
        <Setter Property="ClickMode" Value="Press"/>
        <Setter Property="Content" Value="V"/>
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="FontFamily" Value="MS Sans Serif"/>
        <Setter Property="FontSize" Value="12"/>
        <Setter Property="BorderBrush" Value="Transparent"/>
         <Setter Property="BorderThickness" Value="0"/>
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Background">
                    <Setter.Value>
                        <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                            <GradientStop Color="#FFCCCCCC" Offset="0"></GradientStop>
                            <GradientStop Color="#FFA2A2A2" Offset="1"></GradientStop>
                        </LinearGradientBrush>
                    </Setter.Value>
                </Setter>
                <Setter Property="BorderThickness" Value="0"></Setter>
            </Trigger>
            <Trigger Property="IsEnabled" Value="False">
                <Setter Property="Background" Value="#FFD4D0C8"/>
            </Trigger>
        </Style.Triggers>
    </Style>
 
    <Style TargetType="ComboBoxItem">
        <Setter Property="Background" Value="#FF8E8E8E"></Setter>
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="FontFamily" Value="MS Sans Serif"/>
        <Setter Property="FontSize" Value="12"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
    </Style>
 
    <Style TargetType="{x:Type ComboBox}">
        <Setter Property="FontFamily" Value="MS Sans Serif"/>
        <Setter Property="FontSize" Value="12"/>
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="Background" Value="#FF8E8E8E"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Height" Value="30"/>
        <Setter Property="Margin" Value="5,2,5,2"/>
        <Setter Property="BorderBrush" Value="Black"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ComboBox">
                    <Grid x:Name="GridComboBox">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition/>
                            <ColumnDefinition Width="24"/>
                        </Grid.ColumnDefinitions>
                        <Border x:Name="TextBorder" CornerRadius="3,0,0,3" BorderBrush="White" BorderThickness="1">
                            <ContentPresenter
                            x:Name="TextContentPresenter"
                            Grid.Column="0" 
                            TextBlock.FontFamily="MS Sans Serif"
                            TextBlock.FontSize="12"
                            TextBlock.Foreground="White"
                            HorizontalAlignment="Center"
                            VerticalAlignment="Center"
                            Content="{TemplateBinding SelectionBoxItem}"
                            ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
                            ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"/>
                        </Border>
                        <!--<ToggleButton ClickMode="Press"  Background="Transparent"/>-->
                        <Border Grid.Column="1"  CornerRadius="0,3,3,0" BorderBrush="White" BorderThickness="1">
                            <ToggleButton Style="{StaticResource ComboBoxToggleButton}"/>
                        </Border>
                        <!---->
                        <Popup Width="{Binding ActualWidth, ElementName=GridComboBox}" Name="PopupCB"
                                  Placement="Bottom"
                                  IsOpen="{TemplateBinding IsDropDownOpen}"
                                  Focusable="False"
                                  AllowsTransparency="True"
                                  PopupAnimation="Slide">
                            <Border BorderThickness="1,1,1,1" CornerRadius="0,0,5,5" BorderBrush="White" Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}" Name="DropDownBorder">
                                <ScrollViewer>
                                    <ItemsPresenter     
                                        TextBlock.FontFamily="MS Sans Serif"
                                        TextBlock.FontSize="12"
                                        TextBlock.Foreground="White" 
                                        SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" KeyboardNavigation.DirectionalNavigation="Contained" />
                                </ScrollViewer>
                            </Border>
                        </Popup>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter TargetName="TextBorder" Property="Background" Value="#FFD4D0C8"/>
                            <Setter TargetName="TextContentPresenter" Property="TextBlock.Foreground" Value="Black"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>