如何使用TabItem名称的参数调用XAML中的绑定方法?

不幸的是 MethodParameters ObjectDataProvider 不能直接绑定。

TwoWay 或 OneWayToSource Directory.GetFiles GetListByCategory

<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:sys="clr-namespace:System;assembly=mscorlib"
      xmlns:io="clr-namespace:System.IO;assembly=mscorlib"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid.Resources>
        <x:Array x:Key="directories" Type="{x:Type sys:String}">
            <sys:String>C:\</sys:String>
            <sys:String>C:\Windows\</sys:String>
            <sys:String>C:\Windows\System32\</sys:String>
        </x:Array>
        <ObjectDataProvider x:Key="fileList" ObjectType="{x:Type io:Directory}" MethodName="GetFiles">
            <ObjectDataProvider.MethodParameters>
                <!-- Initial value, this will get wiped out by the Binding below. -->
                <sys:String>C:\</sys:String>
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </Grid.Resources>
    <TabControl ItemsSource="{StaticResource directories}">
        <TabControl.ItemContainerStyle>
            <Style TargetType="{x:Type TabItem}">
                <Setter Property="ContentTemplate">
                    <Setter.Value>
                        <DataTemplate DataType="{x:Type sys:String}">
                            <ListBox ItemsSource="{Binding Source={StaticResource fileList}}"/>
                        </DataTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </TabControl.ItemContainerStyle>
        <TabControl.SelectedItem>
            <Binding Source="{StaticResource fileList}"    
                     Path="MethodParameters[0]"
                     BindsDirectlyToSource="True"  
                     Mode="OneWayToSource"/>
        </TabControl.SelectedItem>
    </TabControl>
</Grid>

这 TabControl.SelectedItem ObjectDataProvider.MethodParameters[0] 使用OneWayToSource,这样当我们更改选项卡时,方法参数会更改为新目录。