I have a ComboBox and I have set the combo.ItemsSource property to a List object. The Book class contains two properties: "
Abbreviation" and "Name".
I have set the ComboBox's DisplayMemberPath to "
Abbreviation" but the following style that is set on the ComboBox does not display the
Abbreviation property, but instead shows "Words.Book" which is the name of the class. The ComboBox drop-down displays a list correctly (Using the specified
Abbreviation property). The problem is in the selected ComboBox item, the one displayed when the ComboBox' drop-down is closed.
I guess the problem is in ContentPresenter in DataTemplate but I was unable to find a successful solution. Currently the ContentPresenter's Content property is set to Content="{TemplateBinding Content} but I don't know if that's how it should be.
Any ideas how to show the property specified in DisplayMemberPath on the selected item?
Thank you
the code:
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="ToggleButton">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" Grid.ColumnSpan="2" CornerRadius="2" BorderThickness="1" Background="{DynamicResource ribbonTitleFade}" />
<Border Grid.Column="0" CornerRadius="2,0,0,2" Margin="1,6,1,6" BorderBrush="{DynamicResource boSecE}" BorderThickness="0,0,1,0" />
<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.IsMouseOver" Value="true">
<Setter TargetName="Border" Property="Background" Value="{DynamicResource ribbonTitleFade}" />
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="true">
<Setter TargetName="Border" Property="Background" Value="{DynamicResource ribbonTitleFade}" />
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="Black" />
<Setter TargetName="Border" Property="BorderBrush" Value="Black" />
<Setter Property="Foreground" Value="Gray"/>
<Setter TargetName="Arrow" Property="Fill" Value="Gray" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="comboBoxBorderTransparent" TargetType="Control">
<Setter Property="BorderBrush" Value="{DynamicResource boPrimC}" />
</Style>
<Style x:Key="comboItemStyle" TargetType="ComboBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border x:Name="backBorder" >
<StackPanel Orientation="Horizontal">
<Rectangle x:Name="rectA" Stroke="White" Width="4" Height="4" Fill="#80FFFFFF" Margin="5,0,0,0" HorizontalAlignment="Left" />
<TextBlock x:Name="text" Foreground="White" FontSize="10px">
<ContentPresenter Margin="8,1,0,1"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
/>
</TextBlock>
</StackPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ComboBoxItem.IsMouseOver" Value="true">
<Setter TargetName="rectA" Property="Stroke" Value="Black" />
<Setter TargetName="rectA" Property="Fill" Value="#80000000" />
<Setter TargetName="backBorder" Property="Background" Value="White"/>
<Setter TargetName="text" Property="Foreground" Value="{DynamicResource boPrimC}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<DataTemplate x:Key="comboSelectedItemTemplate">
<TextBlock Foreground="White" FontSize="10px">
<ContentPresenter Content="{TemplateBinding Content}" />
</TextBlock>
</DataTemplate>
<Style 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="60"/>
<Setter Property="MinHeight" Value="20"/>
<Setter Property="ItemContainerStyle" Value="{DynamicResource comboItemStyle}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton" Grid.Column="2"
Template="{StaticResource ComboBoxToggleButton}"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Press">
</ToggleButton>
<ContentPresenter HorizontalAlignment="Center"
VerticalAlignment="Center"
Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{DynamicResource comboSelectedItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="3,3,23,3"
/>
<Popup Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="False" Focusable="False" PopupAnimation="Slide">
<Grid Name="DropDown" SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder" Background="{DynamicResource ribbonTitleFade}"
BorderThickness="1" BorderBrush="{DynamicResource boPrimC}" />
<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="Black"/>
</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="2"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0"/>
</Trigger>
<Trigger Property="IsEditable" Value="true">
<Setter Property="IsTabStop" Value="false"/>
<!--<Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>-->
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
</Style.Triggers>
</Style>
