WPF按钮没有边框没有背景

I just need a button so simple that it looks like a TextBlock. Some time ago I saw an answer on SO to style the button based on a static style for a button in a menu but I cannot find that answer (and I have been searching for an hour). Does anyone know what system style I am referring to and the syntax to apply that style to a button?I just need a button so simple that it looks li