WPF TextBlock&Label随父级控件缩放 - zLulus/My_Note GitHub Wiki
效果：
需要Label/textblock的文字大小随resize改变，则使用Viewbox
<Viewbox Stretch="Uniform">
<TextBlock Name="myTextBlock" Text="move and rezise TextBlock"></TextBlock>
</Viewbox>How to set textblock or label with resizable font size in WPF?