Not sure if your using jquery or not, but:
$(function() {
var $frame = $('<iframe style="width:200px; height:100px;">');
$('body').html( $frame );
setTimeout( function() {
$.ajax(
url="/Home/GetMimeMessageType/small1.eml/HtmlBody",
type:'GET',
success: function(data){
var doc = $frame[0].contentWindow.document;
var $body = $('body',doc);
$body.html(data);
}
);
},1 );
});
I have not tested the above code, but this should work fine. A few things to note:
You will need to create a custom Route to map this to your controller: http://msdn.microsoft.com/en-us/library/cc668201(v=vs.100).aspx
You will also need to change the javascript $('body').html() to be the ID of a div as a placeholder
also you will notice i have no path, if this never changes, you should add the path to your code or you can use formcollection and change the jquery ajax to a post, and set the variables and values there.
Your content will then up up in an iframe.
Forget the whole html.renderaction, this solution gives you a little more scope