Please the world in a great god, and how to get to the similar AutoIt3 in c # can grab control [senior class name]?
Because some of the controls can't grab the Control ID, but can crawl to [senior class name]
Which API function to use?
Extended to another problem is how to use this [senior class name], to achieve click operation, in the similar AutoIt3 ControlSend function (by [senior class name] parameter),

AutoIt3 ControlSend example
ControlClick ($Title, ""," [CLASS: AfxWnd70s; INSTANCE: 474] ")

[CLASS: AfxWnd70s; the INSTANCE: 474]=[senior CLASS name]