Is it possible to run Custom Action method post in preview Page, since that option is only available in list page.
There is no Row_CustomAction event in preview page, but you can use ListOptions_Load and ListOptions_Rendered events to add your own columns and code.
I had no success, trying to run the query inside ListOptions_Rendered, could you please give me a clue on sample on how to make it happen?
Please post your code for more discussion.