C# 具有模板命令绑定的自定义ListboxItem

我试图构建一个自定义ListboxItem，但我很难将命令绑定到TemplateControl

<Style x:Key="{x:Type controls:NavigationRailItem}" TargetType="{x:Type controls:NavigationRailItem}">
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="BorderThickness" Value="0"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type controls:NavigationRailItem}" >
                <StackPanel Orientation="Vertical" >
                    <StackPanel.InputBindings>
                        <MouseBinding Gesture="LeftClick" Command="{TemplateBinding Command}"/>
                    </StackPanel.InputBindings>
                    <materialDesign:PackIcon Kind="{TemplateBinding IconKind}"  HorizontalAlignment="Stretch" Width="25" Height="25" VerticalAlignment="Stretch"/>
                    <TextBlock Text="{TemplateBinding Text}" FontSize="11" HorizontalAlignment="Center"/>
                    <ContentPresenter/>
                </StackPanel>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

在我的主窗口中，我尝试将命令绑定到我的ViewModel。如果我试图直接绑定DependencyProperty，我不会得到Click事件。 如果我在主窗口中再次使用InputBinding绑定它，我就会得到它。最后一个测试是直接使用ListboxItem的本机实现

<ListBox Grid.Column="1" HorizontalAlignment="Center">
    <Controls1:NavigationRailItem IconKind="Car" Text="Test1" Command="{Binding TestCommand}"/>
    <Separator Height="10"/>
    <Controls1:NavigationRailItem IconKind="XboxLive" Text="Test2" >
        <Controls1:NavigationRailItem.InputBindings>
            <MouseBinding Gesture="LeftClick" Command="{Binding TestCommand}"/>
        </Controls1:NavigationRailItem.InputBindings>
    </Controls1:NavigationRailItem>
    <ListBoxItem >
        <StackPanel Orientation="Vertical" >
            <StackPanel.InputBindings>
                <MouseBinding Gesture="LeftClick" Command="{Binding TestCommand}"/>
            </StackPanel.InputBindings>
            <materialDesign:PackIcon Kind="Apple"  HorizontalAlignment="Stretch" Width="25" Height="25" VerticalAlignment="Stretch"/>
            <TextBlock Text="Test3" FontSize="11" HorizontalAlignment="Center"/>
        </StackPanel>
    </ListBoxItem>
</ListBox>

---

谁能告诉我我做错了什么？我想了解如何构建自己的控件。

TemplateBinding

只能在

控件模板中使用。因此，要解决此问题，请在控件模板中更改以下行：



为此：



<ListBox Grid.Column="1" HorizontalAlignment="Center">
    <Controls1:NavigationRailItem IconKind="Car" Text="Test1" Command="{Binding TestCommand}"/>
    <Separator Height="10"/>
    <Controls1:NavigationRailItem IconKind="XboxLive" Text="Test2" >
        <Controls1:NavigationRailItem.InputBindings>
            <MouseBinding Gesture="LeftClick" Command="{Binding TestCommand}"/>
        </Controls1:NavigationRailItem.InputBindings>
    </Controls1:NavigationRailItem>
    <ListBoxItem >
        <StackPanel Orientation="Vertical" >
            <StackPanel.InputBindings>
                <MouseBinding Gesture="LeftClick" Command="{Binding TestCommand}"/>
            </StackPanel.InputBindings>
            <materialDesign:PackIcon Kind="Apple"  HorizontalAlignment="Stretch" Width="25" Height="25" VerticalAlignment="Stretch"/>
            <TextBlock Text="Test3" FontSize="11" HorizontalAlignment="Center"/>
        </StackPanel>
    </ListBoxItem>
</ListBox>