How to cache images from a SQl Server 2005 database call?

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C#

ASP.NET

SQL

server

I am having trouble using the output cache param in an aspnet 2.0 page directive. I am using a session variable to hold the value of the selected image. It seems that the dynamic control in a datalist, is not working when the output cache is set to true in the page directive. Is there a way to cache the images seperately to avoid using a page directive?

datalist code

" RepeatColumns="6" CellPadding="8" CellSpacing="8" GridLines="Both" SelectedItemStyle-BackColor="#33ff66" OnSelectedIndexChanged="dtlImages_SelectedIndexChanged" OnItemCommand="dtlImages_ItemCommand"> ' Runat="server">
' ID="lblDescription" Font-Bold="True" Font-Size="12px" Font-Names="Arial">

code that retrieves the image from the database

protected void Page_Load(object sender, System.EventArgs e) { string strImageID = Request.QueryString["id"];