之前用法：

<toolkit:ToggleSwitch>

   <toolkit:ToggleSwitch.Header>

       <TextBlock Text="23232" Foreground="Blue"></TextBlock>

  </toolkit:ToggleSwitch.Header>

</toolkit:ToggleSwitch>

 

 

不知咋搞，升级非得这样子搞才行，脑残么？Header 居然可以传ojbect 为毛放控件进去不会显示

<toolkit:ToggleSwitch>

                <toolkit:ToggleSwitch.HeaderTemplate>

                    <DataTemplate>

                        <TextBlock Text="23232" Foreground="Blue"></TextBlock>

                    </DataTemplate>

                </toolkit:ToggleSwitch.HeaderTemplate>

</toolkit:ToggleSwitch>