close Form

hi all,

i have one form in VS2005  (form1.aspx) that in page load() of it ,is created one html file on host(for example test.html) , i want  to  delete it(test.html) when user close this  form(form1.aspx) ,from host but i dont know  where i must write it code , this means that i don't know , is exist in asp.net(c#) event for close form in asp.net or no?

 please help to me for solve this problem.

 thanks and best regards 
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