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krishna guptakrishna gupta 

How to achieve the merge field functionality in visualforce page?
hi Krishna gupta
go to below link for your solution
let me inform if it helps you
krishna guptakrishna gupta

The URL which you provided only showed how to use the merge field expression.
I want to create a merge field functionality
Below are step by step image.

I want to create a button.
User-added image

Once i will click on button, i want the below functionality.
User-added image
User-added image