[Recommended] [blood lessons] C # Timer controls in windows service programs

Today, I worked with my colleagues on how to write the Timer control in the windows service program.
After we set up a windows service program, we usually think of the Timer control when we use a Timer. So we pull the Timer control in the tool, double-click the event, and set the time. Wow, succeeded ....
But when the service was running, why didn't the event be executed when the time was reached ???????
Later, I found a lot of information to know that this Timer control is under winForm and cannot be used in windows service programs.
What should I do .......
Open"Toolbox" --- Right-click --- "select item"--- LocateTimer control, See. The Timer control isSystem. TimerUnder.

YesNoSystem. Windows. Form. Then add. Double-click... write event...

OK.