how to pass Form from one page another with out using query string

Hi all
 
I have one for with 20 fields want to pass it to anther page for users confirmation. first user will fill the form in the first page after that data should show in another page for confirmation. For this i dont want to use query string and showing the data in the URL any good procedure for this.
am trying with Session.contents("Name")=txtName.Text. but i feel if session expires in second page then data will be lost.
am using VB code, C# also no problem 
 
any suggestion much appreciate 
 
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