WPF Multicolumn Combobox

Question

我有以下用于多列组合框的数据模板:

<DataTemplate x:Key="ShipViaKey">
    <Grid Height="23" Width="Auto" ShowGridLines="False">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="100"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <TextBlock Grid.Column="0" Text="{Binding Code}"/>
        <TextBlock Grid.Column="1" Text="{Binding Carrier}"/>
    </Grid>
</DataTemplate>

组合框的定义如下:

<ComboBox Grid.Row="0" Grid.Column="1" x:Name="CboShipVia" SelectedValue="{Binding FkCarrier, Mode=TwoWay}" SelectedValuePath="PkCarrier" IsEnabled="{Binding HasData}" ItemTemplate="{StaticResource ShipViaKey}"/>

这一切都很好; 除了我只想显示组合框中所选项目的"代码",而不是两个值.有没有办法做到这一点？

Answer 1

而不是ItemTemplate,使用ItemContainerStyle:

<ComboBox.ItemContainerStyle>
    <Style TargetType="ComboBoxItem">
        <Setter Property="ContentTemplate">
            <Setter.Value>
                <DataTemplate>
                    <Grid Height="23" Width="Auto" ShowGridLines="False">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="100"/>
                            <ColumnDefinition Width="*"/>
                        </Grid.ColumnDefinitions>

                        <TextBlock Grid.Column="0" Text="{Binding Code}"/>
                        <TextBlock Grid.Column="1" Text="{Binding Carrier}"/>
                    </Grid>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ComboBox.ItemContainerStyle>

另外,设置DisplayMemberPath为Codeproperty.