You need a handler *.ashx or another webform *.aspx which will request and show binary data.

This question has been answered here many times e.g. http://forums.asp.net/t/1696889.aspx?How+to+display+an+image+from+MS+SQL+image+to+VB+NET+web+page 

Also read this article (has both c# and vb) http://www.aspsnippets.com/Articles/Display-Images-from-SQL-Server-Database-using-ASP.Net.aspx