C # (asp.net) application.doevents () processing queue messages

This method can handle messages for the current queue, such as a For loop that appends text to the TextBox 5,000 times, which is sure to feign death for a while.

You can use Application.doevents () to work with the queue's information at this point.

Simply put the difference between using application.doevents () and not using Application.doevents ():

Do not use Application.doevents ():

Loop 5,000 times, the interface will suspend animation for a while, then wait for the full end of the loop and then display the interface.

Use Application.doevents ():

If you add this sentence to the for loop, the interface message will be updated in time (neither will it be suspended);