Can I use the "checkAll" method without firing the "checkChange" event on initial load?

Question

Hi!I'm following one of your samples which uses some checkboxes to show/hide resources in the Schedule. While this works, I can't get it working with the ListBox. On initial load I would need it to select all items but only fire the checkChange event when I uncheck a checkbox in the ListBox.Right now the event is fired x times depending on the amount of items in the ListBox.Is there a way to initially checkAll items without firing the checkChange event?

Arun Palaniyandi · Answer

Hi Paul Kocher, 

Thanks for contacting Syncfusion support. 

Query1:” Is there a way to initially checkAll items without firing the checkChange event?” 
 
Yes, you can use the "checkAll" method without firing the "checkChange" event on initial load. To use, you need to call the checkall()  method in the create event of the Listbox. 

Please find the below demo for your reference: 
http://jsplayground.syncfusion.com/aw0rnjrd 


Query2:” Right now the event is fired x times depending on the amount of items in the ListBox.” 

We could not reproduce this issue in any of our versions. Hence we request you to share your version and an issue reproducible sample.  So this information would be very helpful for us to verify your mentioned issue from our side. 

If the provided information and sample does not meet your requirement, please get back to us with more information so that it will help us to provide the solution at earliest. 
  
Regards, 
Arun P.