Include file in asp.net

 Hi all:
 
Is using an include file bad coding practice in asp.net?  I am aware of master pages, etc. but it seems like in this case an old fashioned include file works best.
I have a home page and I have an "all other" page.  The all other page is my master page. I place the header include on the master page and at the top of the home page. 
<!--#include file="inc/inc_header.aspx"-->
Thanks!

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