Web Forms :: How To Prioritize URL Rewriting Rule

I want to use wild card after first slash("/")  in my url rewriting but i want other pages to redirect on particular page for e.g. if  i use this 

<rewrite url="~/(.+)" to="~/default.aspx" />

Then it will redirect all pages to to xyz.com/default.aspx   

But i want this will fire last if i use some rule before that if will fire to that page not use this url rewriting like in MVC but  i want it in through url rewriting e.g.

<rewrite url="~/submitform" to="~/submitform.aspx" />
<rewrite url="~/(.+)" to="~/default.aspx" />

in that case if user write xyz.com/submitform it will redirect to submitform.aspx  else redirect to default.aspx.