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How do I access a Silverlight XAP file across a domain?

Answer 1

A:

You could create a simple html file next to the .xap that contains the silverlight object and access this from an iframe. This is how http://silverlight.live.com/ fixed this issue for example.

On you main page on subA.domain.com add an iframe that show a html page on the other domain:

<iframe src="http://subB.domain.com/SilverlightApp.html" 
        scrolling="no" 
        frameborder="0" 
        style="width:800px;height:600px">
</iframe>

and SilverlightApp.html on subBdomain.com could look something like:

<html>
  <body>
    <div id="silverlightControlHost">    
      <object data="data:application/x-silverlight-2," 
              type="application/x-silverlight-2"        
              width="800px" height="600px">        
        <param name="source" value="http://subB.domain.com/SilverlightApp.xap" />
        <param name="onerror" value="onSilverlightError" />
        <param name="background" value="white" />
        <param name="minRuntimeVersion" value="2.0.31005.0" />
        <param name="autoUpgrade" value="true" />
        <param name="enableHtmlAccess" value="true" />
        <a href="http://go.microsoft.com/fwlink/?LinkID=124807" 
           style="text-decoration: none;">            
          <img src="http://go.microsoft.com/fwlink/?LinkId=108181" 
               alt="Get Microsoft Silverlight"
               style="border-style: none" />
        </a>
      </object>
      <iframe style='visibility: hidden; height: 0; width: 0; border: 0px'>
      </iframe>
    </div>
  </body>
</html>

Sorskoot 2009-06-27 12:00:48

Answer 2

A:

When Silverlight requests a .XAP file cross-domain, the content type must be: application/x-silverlight-app. Also, you need a cross-domain policy file on the other domain. gl

Erik Mork 2009-06-27 17:36:48

Answer 3

A:

Hi Everyone,

To assist others who have this same issue, and don't want to use IFrames, please see this link, as it has solved my problem. Even though the author is referring to Silverlight 2, it has solved my problem in Silverlight 3. In case the link goes down, there are 2 things I needed to do:

-- In the Silverlight app, edit the AppManifest.xml to add the following:

<Deployment xmlns="http://schemas.microsoft.com/client/2007/deployment"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
ExternalCallersFromCrossDomain="ScriptableOnly">

-- If you are using HtmlPage in your Silverlight app (such as when reading the QueryString passed to the hosting page), you must also add:

<param name="enableHtmlAccess" value="true" />

to the silverlight object in the hosting page.

Please note there are security implications to the above, and I can't help but to think this is why Microsoft does not go out of their way to disseminate this information. However in my case I don't have scriptable silverlight elements, and since I wrote the silverlight app, I don't have a problem with the hosting page allowing the silverlight app access to it.

While researching this, I noticed that this issue and corresponding solutions gets confused with a separate problem, the problem of a silverlight xap accessing a wcf service across domain boundaries. That issue does require a clientaccesspolicy.xml file located on the root of the website hosting the wcf service.

So it is possible to have the 1st site accessing a xap file on a 2nd site, which accesses a data service on a 3rd site, for maximum flexibility and re-use.

Roy McDonough 2009-12-25 22:10:02

Answer 4

A:

Hi I had created a silver light application with media player. And it is working in that app fine. When i use the embed code to some other application as meta tag. It fails to load the zap file and video. Can i know how can i fix it.

Here is code:

<object height="360" width="640" type="application/x-silverlight-2" data="data:application/x-silverlight,">
<param value="http://localhost:1069/ClientBin/MymediaPlayer.xap" name="source">
<param value="onSilverlightError" name="onerror">
<param value="white" name="background">
<param value="m=http://localhost:1069/content/en-us/videofile/Butterfly.wmv" name="initParams">         
        </object>

When i use this in the silver light application it is working. but this meta tag should work on all other domain. I had tested on two local host domain.

Thanks in Advance.

KK

Kamal 2010-03-26 14:37:49

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How do I access a Silverlight XAP file across a domain?

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