WPF Button Content 的StringFormat

<telerik:RadButton
    Grid.Column="0"
    Height="40"
    Command="{Binding DataContext.FlowControlCommand, RelativeSource={RelativeSource AncestorType=ListBox}}"
    CommandParameter="{Binding}"
    FontSize="14"
    FontWeight="SemiBold">
    <TextBlock
        Height="40"
        FontSize="14"
        FontWeight="SemiBold"
        Text="{Binding FlowDescription, StringFormat={}执行{0}}" />
</telerik:RadButton>

<telerik:RadButton
    Grid.Column="1"
    Height="30"
    Background="#6C757D"
    Command="{Binding DataContext.LookFlowCommand, RelativeSource={RelativeSource AncestorType=ListBox}}"
    CommandParameter="{Binding}"
    Content="{Binding TreeViewActionModel, StringFormat=查看：{0}}"
    FontSize="12" />

第二种方式不生效：

记得使用第一种