How should this procedure be done?

883259

Write a program to make a small red ball on the form move in a circle. Given the circular trajectory equation:
x = rsina
y = rcosa
r is the radius of the circle, a is the center angle

lin3412048

Create a Timer to implement non-stop motion
Count the two small ball coordinates in the Timer event
Then Graphic.Draw comes out.

sumu007

Set a Timer timer, draw a ball every tick, since you know the trajectory equation, it is not difficult.

wenmy715

Agree upstairs

savage698

A timing thread, you can calculate the trajectory by yourself, and you can draw it. It is recommended to use double buffering.