There is a client-side event for that: https://docs.telerik.com/devtools/aspnet-ajax/controls/grid/client-side-programming/events/oncolumnhidden. You can use it to fire an AJAX request that will save the grid state: https://docs.telerik.com/devtools/aspnet-ajax/controls/ajaxmanager/client-side-programming/overview.
Get quickly onboarded and successful
with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.