Any Alternative Solution For loading the aspx page with gridview editable action in iframe ?

aspx code
<iframe src="settings.aspx" ></iframe>

settings.aspx
-----------------

That page contain gridview with edit template option.

if i will use asp:panel insted of iframe edit option is not working.

you couldn't understand my situation.I am using iframe in popup window. i click popup button, every time, the i frame page is loading. so i am using ajax post method ..

$.post("NewSettings.aspx", function(data) {

//$( "#set" ).prop( "disabled", true );
var iframe = document.getElementById('frameSettings');
var iframedoc = iframe.document;
if (iframe.contentDocument)
iframedoc = iframe.contentDocument;
else if (iframe.contentWindow)
iframedoc = iframe.contentWindow.document;
if (iframedoc) {
iframedoc.open();
iframedoc.writeln(data);
iframedoc.close();
}
alert(iframedoc);
// $( "#set" ).prop( "disabled", false );
isopen = true;

//document.getElementById("frames").src = "NewSettings.aspx";
});

for loading newsettings.aspx in ifrmae.
It's working fine. But i will use asp:panel for loading page it's not working newsetting.aspx grid edit option..