textbox顶部添加图片 求代码！！
好像是自定义，不过不会写。。。求大神教。。。 期待.
[解决办法]

<DockPanel>
    <Button BorderThickness="0" DockPanel.Dock="Left" HorizontalAlignment="Right" Height="28" Width="23">
         <DynamicResource ResourceKey="SearchBar"/>
    </Button> 'This is a button, because I have a custom Style which I am using which makes all the borders go away. And also because I use it to clear the field.
    <TextBox Text="Search..." FontSize="16" HorizontalAlignment="Stretch" Background="Transparent"/>
</DockPanel>