Dynamic expression
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label runat="server" id="Label1" Text="<%$ AppSettings:AppVersionNumber %>" /> </div> </form> </body> </html> File: <?xml version="1.0"?> <configuration> <appSettings> <add key="AppVersionNumber" value="8.2.2001"/> </appSettings> </configuration>