我删除了重复的帖子.编辑您的帖子以添加细节.

按钮具有Enabled属性.也许您应该买一本书并阅读，并且通常学习基础研究?

I deleted your duplicate post. Edit your post to add detail.

Buttons have an Enabled property. Perhaps you should buy a book and read it, and in general learn to do basic research ?