vb.net - Clickable Link Not appearing on page from generated anchor tag -

i have .js code generates following anchor tag:

<a name="link_274_4" id="link_274" onserverclick="downloadinspection_click" runat="server">2017-09-10</a> 

i cut , paste out of dom explorer of ie.

that link not clickable on page displaying.

here vb.net want run:

sub downloadinspection_click(byval sender object, byval e eventargs)     dim button button = directcast(sender, button)     dim pk integer = cint(button.id.replace("link_", ""))      dim filenameprefix string = cstr(pk)      dim preapprovaldir = "c:\\data"      dim di new directoryinfo(preapprovaldir)     dim fiarr fileinfo() = di.getfiles()     dim fri fileinfo     each fri in fiarr         if fri.name.startswith(filenameprefix)             exit         end if     next fri       response.clear()     response.addheader("content-disposition", "attachment; filename=" + fri.name)     response.contenttype = "application/octet-stream"      response.addheader("content-length", fri.length)     response.writefile(fri.fullname)     response.end()  end sub 

i have expected vb need handles clause, post not have it: running code behind routine <a href

the anchor tags generated in table not know code handles clause.