My VF page has 10 sections.Section-10 has 1 button(name-Attachment) and 2 sub sections. On button click a new VF page opens, where I have option to attach files. Once file is attached, user is navigated back to parent page. In section-10, sub section-2, I have a section to show all attachments. I have 2 different controllers and 2 pages for the parent and Attachment page(on click of attachment button).
My Requirement-I want to refresh subsection-2 of section 10(not the whole page), when attachment is done.