Mahapps TabControl，在使用ItemSource = {Binding ..}时无法将CloseButtonEnabled = true设置

Question

我正在使用MahApps TabControl。 如果我从xaml添加项目，则可以设置“ CloseButtonEnabled = true”，并且显示“关闭”按钮，当我尝试绑定ItemSource时，不显示关闭按钮。 有什么想法，我该如何解决这个问题？

这是我的示例代码：

<Window.Resources>
    <Style BasedOn="{StaticResource MetroTabItem}" TargetType="{x:Type Controls:MetroTabItem}">
        <Setter Property="Controls:ControlsHelper.HeaderFontSize" Value="15"/>
        <Setter Property="Foreground" Value="Red"/>
        <Setter Property="CloseButtonEnabled" Value="True"/>
    </Style>
</Window.Resources>

 <Controls:MetroTabControl ItemsSource="{Binding AvailableFiles}" SelectedIndex="{Binding SelectedIndex}"  Grid.Row="1" >           
        <Controls:MetroTabControl.ItemTemplate >
            <DataTemplate>
                <TextBlock Text="{Binding Title}" />
            </DataTemplate>
        </Controls:MetroTabControl.ItemTemplate>
 </Controls:MetroTabControl>

Answer 1

您可以尝试以下方法：

<Window.Resources>
<Style x:Key="MyCustomTabItem" BasedOn="{StaticResource MetroTabItem}" TargetType="{x:Type Controls:MetroTabItem}">
    <Setter Property="Controls:ControlsHelper.HeaderFontSize" Value="15"/>
    <Setter Property="Foreground" Value="Red"/>
    <Setter Property="CloseButtonEnabled" Value="True"/>
</Style>
</Window.Resources>
<Controls:MetroTabControl ItemsSource="{Binding AvailableFiles}" ItemContainerStyle="{StaticResource MyCustomTabItem}" SelectedIndex="{Binding SelectedIndex}"  Grid.Row="1" >           
    <Controls:MetroTabControl.ItemTemplate >
        <DataTemplate>
            <TextBlock Text="{Binding Title}" />
        </DataTemplate>
    </Controls:MetroTabControl.ItemTemplate>
</Controls:MetroTabControl>

Answer 2

这里的问题是您覆盖MetroTabItem的完整样式。

如果您只想要其他更改，请执行此操作

<Window.Resources>
    <Style BasedOn="{StaticResource {x:Type Controls:MetroTabItem}}" TargetType="{x:Type Controls:MetroTabItem}">
        <Setter Property="Controls:ControlsHelper.HeaderFontSize" Value="15"/>
        <Setter Property="Foreground" Value="Red"/>
        <Setter Property="CloseButtonEnabled" Value="True"/>
    </Style>
</Window.Resources>

所述MetroTabItem在BasedOn="{StaticResource MetroTabItem}"是一个样式，不类型。

希望有帮助！