How to create a custom list-view button that handles multi-record selection in salesforce?

Hi Tanu,

For creating a custom list view button , first of all you need to make a visualforce page with standardController and extensions for apex class in which you perform your multi-record handling , then you need to create Custom Buttons and Links with display type "List Button" and Content Source "Visualforce Page" and select your visualforce page in content and save it.

Hope this helps you.

Thanks