Hi Nimish,
Thanks for evaluating Syncfusion products.
We regret to let you know that currently we don’t support Custom function to associate with controller Action.
We are providing a custom Action mapping workaround for your request.
Please Refer the Attachment for custom action mapping.
Please let us know if you want more details.
Thanks,
Muthukumar.L
CustomActionMapping_c69b3abb.pdf