How could I show a waiting/loading image while the grid is i

After pressing a button the data in grid is recalculated and this takes time…

I want to somehow display an waiting/loading image after I press the button till the grid is reloaded with the new data.

Is there a way to do that ?

If you reloading data from server side - it is possible by using onXLE | onXLS events

Please check … es&s=onXLS




it’s not working …

the alert doesn’t appear

Please check next sample … ent&q=4922