Question

I have a Silverlight application using C#, with 2 main functions that I want to make accessible from JavaScript functions. I have done the RegisterScriptableObject() in the class and set-up the [ScriptableMember] for the functions I want access to.

This the Silverlight object:

<div id='silverlightControlHost'>     <object id='silverlightControl' data='data:application/x-silverlight,' type='application/x-silverlight-2' width='1024px' height='300px'>         <param name='source' value='DrawingWaveForm.xap'/>         <param name='onerror' value='onSilverlightError' />         <param name='background' value='white' />         <param name='minRuntimeVersion' value='2.0.31005.0' />         <param name='autoUpgrade' 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> 

and these are my JavaScript functions:

    function Start()     {         var control = document.getElementById('silverlightControl');                     control.Content.Page.Start();     }      function Stop()     {         var control = document.getElementById('silverlightControl');                     control.Content.Page.Stop();     }  

Can anyone tell me where I’m going wrong as it does not seem to work

Answer 1

As timheuer said, [Scriptable] on your Silverlight methods.

Call this in your class:

HtmlPage.RegisterScriptableObject('Page', this);   

Call the Silverlight methods marked as Scriptable from your javascript like this:

function CenterMap(latitude, longitude) {      var silvercontrol = document.getElementById('ctl00_cphMain_slControl');      if (silvercontrol)      silvercontrol.Content.Page.CenterOnCoordinates(latitude, longitude); } 

This page shows you this and how to do the reverse, calling javascript methods from Silverlight. It’s a really nice model.