If by "run time" you mean client side, then use javascript:
getElementById('hyperlinkid').click(); If you mean server side, then the
link must be runat=server and you'll have to call the event handler
explicitly -- which is not a good practice.
Instead, use a helper function:
sub Link_Click(sender as object,e as eventargs)
DoLinkClick
end sub
sub DoLinkClick
...
end sub
Alex Papadimoulis