Sometimes, you might want to put html body tag in a literal control. Then you lost intellisense from Visual Studio. You can use DesignMode property to fix it:
<% If DesignMode Then%><body>
<%
Else%>
<asp:Literal ID="litBodyTag" runat="server" />
<% End If%>
DesignMode - fix body tag as literal control
Sometimes, you might want to put html body tag in a literal control. Then you lost intellisense from Visual Studio. You can use DesignMode property to fix it: