Frame Support at ASP.net 2.0

  • Article

In ASP.net 2.0, it is using XHML page instead of HTML page. The XHTML page must be a well-formed and valid XML document.
The default is XHTML DOCTYPE
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

If you want to have frameset support. You can change the XHTML DOCTYPE to the following:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

You can right-click the tag and select which validation the element uses.

For example:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

<head runat="server">
    <title>Untitled Page</title>
</head>
<frameset rows="50%,50%">

  <frame src =https://www.live.com />

  <frame src ="https://www.asp.net" />

</frameset>
   
</html>

You may refer to this link: https://msdn2.microsoft.com/en-us/library/aa479043.aspx to learn more on the XHTML DOCTYPE.