https://www.cnblogs.com/candyzkn/p/4476832.html
<TextBlock Text="{Binding jshjL,Converter={StaticResource StringToDecimalKey},StringFormat=￥\{0:F2\}}"
<!--<TextBlock Text="{Binding strokeNo,StringFormat=\{0\}为真！}" Style="{StaticResource TextTitleBigStyle}" FontWeight="Bold"/>-->
WPF中XAML中使用String.Format格式化字符串示例
原文：https://www.cnblogs.com/changbaishan/p/9212459.html