C# ListBoxItem边框宽度的拉伸

我写了一些课程，叫做Employe。我将Employees集合设置为ListBox WPF控件的源。我为ItemTemplate编写了这样的模板：

<ResourceDictionary>
    <DataTemplate x:Key="tmpEmploye">
        <Border BorderThickness="3" BorderBrush="Gray" CornerRadius="5" 
                HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
            <StackPanel Orientation="Vertical">
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding Path=Surname}" 
                               HorizontalAlignment="Stretch" Margin="2" 
                               FontWeight="Bold" TextWrapping="Wrap"/>
                    <TextBlock Text="{Binding Path=Name}" 
                               HorizontalAlignment="Stretch" Margin="2"/>
                    <TextBlock Text="{Binding Path=Patronymic}" 
                               HorizontalAlignment="Stretch" Margin="2" 
                               TextWrapping="Wrap"/>
                </StackPanel>
                <TextBlock Text="{Binding Path=Post}" Foreground="Gray" 
                           HorizontalAlignment="Stretch" Margin="2" 
                           FontStyle="Italic" TextWrapping="Wrap"/>
            </StackPanel>
        </Border>                               
    </DataTemplate>            
</ResourceDictionary>

每个项目都有边框。边框必须根据列表框的宽度展开。我为边框设置了HorizontalAlignment=Stretch，但这并不是我想要的

我如何更正它？

试试这个：

<ListBox Name="lbEmployees" ItemTemplate="{StaticResource tmpEmploye}"
                 HorizontalContentAlignment="Stretch"
                 />

试试这个：

<ListBox Name="lbEmployees" ItemTemplate="{StaticResource tmpEmploye}"
                 HorizontalContentAlignment="Stretch"
                 />

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你能同时发布你的列表框XAML吗？@nemesv是的，当然：你能同时发布你的列表框XAML吗？@nemesv是的，当然：