I'm afraid that WebScheduler 3 has now been discontinued for several years and there are not going to be any further updates for it. We have introduced full support for IE 11 and Google Chrome browser in WebScheduler 4.

You can download a 30-day, fully functional, trial version to experience WebScheduler 4 control.

I want to upgrade my WebScheduler 3 to WebScheduler 4.
May i know how much price for me ? Should i need to upgrade some other itmes ? like ISDataSource.Net, WebCombo.Net,...

I have forwarded your request - to have the information regarding the price to upgrade from WebScheduler 3 to WebScheduler 4 - to the Sales and Marketing team of Intersoft. I'm sure they will contact you at the soonest.