asp.net mvc - Populating Iframe with PDF - Using MVC [IE Issue] -

currently, have issue populating iframe have pdf document, issue occurs in ie.

basic layout:

i have screen contains list of items (attachments), can images, text or pdf. when user clicks on 1 of these items - make call controller action [viewattachment] return requested item , display in iframe.

this works data types exception of pdfs in ie. (firefox, chrome etc. display pdf in iframe without issue.)

i using adobe reader 9, , upgraded 10 in hopes of solving issue. i'll attach code see if has suggestions how possibly resolve this.

code populate iframe: (moved 2 lines readability)

$(".viewattachment").live('click',function ()  {     $("iframe#test").attr("src","<%=url.action("viewattachment","images") %>?    attachment=" + $(this).next().val()); });  

viewattachment controller action:

public actionresult viewattachment(string attachmentguid) {       attachment attachment= imageagent.getattachment(attachmentguid);        stream resultstream = new memorystream();       resultstream =  storageproviders[attachment.providername]                       .readfile(attachment.filereference);        resultstream.position = 0;       filestreamresult result = new filestreamresult(resultstream,                                                       attachment.contenttype);        return result; } 

notes:

• i've attempted toggling "display pdf in browser" in adobe reader without success.
• currently testing ie8.
• when clicking on pdf view - iframe remains @ it's previous content , doesn't change @ all.

after several different methods , iterations of testing - determined conflict between ie8-9 , versions of adobe reader 9-10. added following meta tag window containing iframe , resolved of issues:

<meta http-equiv="x-ua-compatible" content="ie=7" /> 

this should @ least work until update / fix made.