Grumpy Wookie

12 Comments so far

1. David Marsh on March 27, 2008

   I had all the same problems you had then I starting looking at every file and looked at the ClientBin folder in the SL.SharePoint.HelloSilverlight2 project and noticed the date created on the xap file was a few weeks old so I cracked open the xap file and compared the SL.XAML.HelloSilverlight.dll in there with the SL.XAML.HelloSilverlight.dll file in the SL.XAML.HelloSilverlight2 project and noticed they were different sizes so I dropped the newly compiled xap file from the SL.XAML.HelloSilverlight2 project into the SharePoint ClientBin folder and success, the Silverlight stuff appeared. I hope this helps or if it is unclear email me and I can try and clarify. Thanks for your tips, especially the missing Silverlight.js file.

2. BenkoBlog : Silverprint a webcast on the SharePoint Silverlight Blueprint on March 28, 2008

   [...] The Grumpy Wookie’s post on same subject [...]

3. zaher on April 8, 2008

   i’ve performed all the previous steps but still the empty webpart appears

4. Evelyn on April 8, 2008

   I’ve tried everything written on this page an an this page: http://www.u2u.info/Blogs/Patrick/Lists/Categories/Category.aspx?Name=Silverlight%20BluePrint
   …after recomiling the .xap file with VS2008 the testpage.htm works fine. unfortunately in sharepoint the webpart is still empty
   any ideas?

5. RichardI on April 23, 2008

   I was getting the following Javascript error in IE when trying to view the Silverlight 2.0 version of the HelloSilverlight control in SharePoint (the 1.0 control worked fine): Sys.InvalidOperationException: InitializeError error #2105 in control ‘ctl00_…_ctl00′: Failed to load pre-requisites for the application.

   I tried the fix suggested by David Marsh, copying the SL.XAML.HelloSilverlight2.xap file from SL.XAML.HelloSilverlight2\ClientBin to SL.SharePoint.HelloSilverlight2\ClientBin\SL.HelloSilverlight2 and then ran the install.bat file, and it cleared up the issue. Looks like nothing in the solution copied the updated .xap file to the folder referenced by the install.bat file, so it was picking up an outdated copy. Nice catch David!

6. Nigel Watson on April 28, 2008

   Richardl - thanks for the pointer - this fixed the blank silverlight webpart issue for me (the updated XAP isn’t being copied into the clientbin directory by the default install .bat file. I also had to make all of the other changes to the paths/URLs etc in the install.bat file to point at the correct locations on my server. It seems to be working fine now.

7. Andre Stene-Larsen on May 6, 2008

   I had the exact same problem. First I tried to fetch the .xap file directly through my browser, this returned a 401 access denied so I fixed that. Still the Silverlight web part would not show. Then I tried to inject some html pointing directly too my .xap file. I know it’s a workaround, but you can use the content editor web part of sharepoint and inject this html

   This works, so it must be something with the scripts thats loading the silverlight plugin I guess..

   html, body {
   height: 100%;
   overflow: auto;
   }
   body {
   padding: 0;
   margin: 0;
   }
   #silverlightControlHost {
   height: 100%;
   }

   function onSilverlightError(sender, args) {
   if (args.errorType == “InitializeError” {
   var errorDiv = document.getElementById(”errorLocation”);
   if (errorDiv != null)
   errorDiv.innerHTML = args.errorType + “- ” + args.errorMessage;
   }
   }

8. Andre Stene-Larsen on May 6, 2008

9. Andre Stene-Larsen on May 6, 2008

   I am trying again..

10. Andre Stene-Larsen on May 6, 2008

    Hmm, no luck in posting the html markup.. Well, at your development computer take a look in the clientbin folder of your silverlight project. You should find a testpage.html file, this file contains the markup. Just modify the source of the object tag and you should be fine.

11. Jules on May 7, 2008

    How do I get the System.Web.Silverlight.dll Assembly into the Global Assembly Cache (GAC) ?

    I have installed the VS2008 Tools for Silverlight 2.0, and the SDK, and yet the assembly still not in the Cach (So it is does not referenced in Silverlight the Web.config File either)

    I tried GACUtil, but this tool does not appear to be recognised. Where is GACUtil these days, and do I need to Strong Name the System.Web.Silverlight.dll myself.

    Silverlight Web parts, even with theBluePrints, still a very painful experience.

12. dkarantonis on May 7, 2008

    Hi Jules,

    from the start menu, go to Administrative Tools->Microsoft .net Framework 2.0 Configuration and select the ‘Add assembly to the GAC’. I don’t think that you have to strong name the assembly.

    Anyway, i still haven’t managed to display the web part on my MOSS page. I’ll try to hack the source code files as mentioned on the above comments and make it work.

    All these concern the Hello World 2 Silverligth Web part? What about the others…?

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