WPF XAML DataTrigger ContentTemplate

Question

我正在将TargetType“ ContentPresenter”样式与DataTriggers一起使用以动态分配ContentTemplate。

<Style x:Key="styleContentValeur" TargetType="{x:Type ContentPresenter}">
    <Style.Triggers>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="chaine">
            <Setter Property="ContentTemplate" Value="{StaticResource dataChaine}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="chainemultiligne">
            <Setter Property="ContentTemplate" Value="{StaticResource dataChaineMultiligne}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="entier">
            <Setter Property="ContentTemplate" Value="{StaticResource dataEntier}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="reel">
            <Setter Property="ContentTemplate" Value="{StaticResource dataReel}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="booleen">
            <Setter Property="ContentTemplate" Value="{StaticResource dataBooleen}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="liste">
            <Setter Property="ContentTemplate" Value="{StaticResource dataListe}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="listedynamique">
            <Setter Property="ContentTemplate" Value="{StaticResource dataListe}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="date">
            <Setter Property="ContentTemplate" Value="{StaticResource dataDate}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding TAT_LIBELLE, Mode=OneWay}" Value="grammaire">
            <Setter Property="ContentTemplate" Value="{StaticResource dataChaine}" />
        </DataTrigger>
    </Style.Triggers>
</Style>

DataTemplates是这样的：

<DataTemplate x:Key="dataChaine">
    <local:TextBoxPerso Style="{StaticResource styleTextBox}"
                        HorizontalContentAlignment="Left" VerticalContentAlignment="Center"
                        TextWrapping="NoWrap" AcceptsReturn="False" AcceptsTab="False"
                        oAttribut="{Binding}"
                        Text="{Binding ATT_VALEUR, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                        IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

<DataTemplate x:Key="dataChaineMultiligne">
    <local:TextBoxPerso  Margin="3" 
                         Style="{StaticResource styleTextBox}"
                         HorizontalContentAlignment="Left" VerticalContentAlignment="Top"
                         TextWrapping="Wrap" AcceptsReturn="True" AcceptsTab="False"
                         HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Hidden"
                         oAttribut="{Binding}"
                         Text="{Binding ATT_VALEUR, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                         IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

<DataTemplate x:Key="dataEntier">
    <local:TextBoxPerso  Style="{StaticResource styleTextBox}"
                         HorizontalContentAlignment="Left" VerticalContentAlignment="Center"
                         TextWrapping="NoWrap" AcceptsReturn="False" AcceptsTab="False"
                         oAttribut="{Binding}"
                         Text="{Binding ATT_VALEUR, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                         IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

<DataTemplate x:Key="dataReel">
    <local:TextBoxPerso  Style="{StaticResource styleTextBox}"
                         HorizontalContentAlignment="Right" VerticalContentAlignment="Center"
                         TextWrapping="NoWrap" AcceptsReturn="False" AcceptsTab="False"
                         oAttribut="{Binding}"
                         Text="{Binding ATT_VALEUR, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                         IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

<DataTemplate x:Key="dataBooleen">
    <local:CheckBoxPerso FocusVisualStyle="{x:Null}" IsChecked="{Binding ATT_VALEUR, Converter={StaticResource StringToBoolConverter}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                         IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

<DataTemplate x:Key="dataDate">
    <DatePicker IsTodayHighlighted="False" SelectedDate="{Binding ATT_VALEUR, Converter={StaticResource StringToDateTimeConverter}, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"
                IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

<DataTemplate x:Key="dataListe">
    <local:ComboBoxPerso IsEditable="True"
                         ItemsSource="{Binding tValeur}" DisplayMemberPath="ALV_VALEUR" SelectedValuePath="ALV_ID"
                         SelectedValue="{Binding ATT_VALEUR, Converter={StaticResource StringToIntConverter}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                         IsEnabled="{Binding IsEnabled, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>

因此，根据TAT_LIBELLE的值，这将选择正确的ContentTemplate。

我对DataTemplate有问题：“ dataDate”。 SelectedDate“ ATT_VALUE”的值对应于我的源代码的另一行，其值是TAT_LIBELLE！=“ date”。 我发现此问题是因为在Converter中有一个例外：StringToDateTimeConverter。

这怎么可能？因为通常只有我的源代码中具有TAT_LIBELLE =“ date”的行才使用此ContentTemplate！？

我没有使用正确的方法动态管理我的ContentTemplate吗？

谢谢。

PS：对不起，我的英语...