您好，请使用以下链接，我希望这正是您想要的。

c＃ - 如何从代码中访问数据模板中的控件？ - 堆栈溢出 [ ^ ]

Hi, use the following link, I hope this is what exactly you want.
c# - how to access a control within Data Template from code behind? - Stack Overflow[^]