You don't need to create dynamic pages for each an every user. You just need to create on single page for all the users where you show the order details on the basis of logged-in user id. You need to pull the data from the database and bind the data to the appropriate controls in the page.
You should understand the basic of the data access in ASP.NET, you can start the step by step tutorials here
http://www.asp.net/data-access/tutorials[
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