C# WebBrowser won't display embedded object

Question

This may be a dumb question, but I just can't get it to work. I'm trying to embed a pdf file into a webbrower in a c# program. Simple right? I thought so, but it proved otherwise. Here's the html code:

<object classid="" type="application/pdf" width="400" height="300" id="pdf1">
<param name="src" value="Test.pdf" />
    <div style="text-align:center; color:#CCCCCC" >No Preview Available.</div>
</object>

And that's all thats in the html file. The funny thing is, this works perfectly in IE (which as I understand is what the WebBrowser uses). I've tried implementing the object tag the non-IE way, with an src attribute and whatnot, but it did the same thing. What's happening is the WebBrowser control is just displaying No Preview Available meaning that the pdf was not successfully embedded. Here's the c# code:

wbPreview.Navigate("I:/Documents/Visual Studio 2008/Projects
                      /PlanReferenceDatabase/test.html");

Can someone tell me why the web browser in c# cannot display the pdf, but the other browser can?

Answer 1

Try formatting the tag like this:

<object type="application/pdf" data="myPdfFile.pdf" class="yourPdfClass" width="550px" height="800px"/>

Include the data attribute in the tag and it seems to work just fine - just tried this in my browser control on a IE8 / IE9 machine and it displays inline.