I’ve also experience that.
How can i fix this?

Everything works fine on IE, Safari, and even Chrome. The problem in firefox seems to be intermitant. It will work sometimes but fail other times. I may reload the browser then it will work. Sometimes it will not work no matter how many times I reload Firefox.

Feels like a race condition in Firefox.

You can see the issue at the following URL:
http://www.myonlineband.com/TopMusic.aspx

Hope it helps..

I think this is incorrect. where do you put this code? Can you show me full code? What are you trying to do?

I didn’t write like that in my sample, isn’t it?

The following code give me ‘unspecified error’

var cont = silverlightControl.content.entrypoint;
cont.CreateHeader(w,h);

where c# code is:

[Scriptable]
public void CreateHeader(string width, string height)
{
int w = int.Parse(width);
int h = int.Parse(height);

Can you please help me…i have spent hours on it to solve but unsuccessfull so far.

Have you tried calling JavaScript function directly from inside Managed code ? i.e. Calling alert() from inside C# without assigning callbacks

I haven’t tried it yet.. I will let you know whether it’s possible to do that or not..

what’s the meaning of function invokeManagedCode(){

This is the name of Javascript that support to invoke the C# code. Please take a look at step 3 of Tip #3.