Question

I have a Silverlight class marked with the ScriptableType & ScriptableMember and I expect to be able to pass the object from Silverlight to javascript. When I call JSON.stringify (in javascript) I expect to receive a JSON representation of the object but all I get is {}

The class is defined as:

[ScriptableType()]
public class MyEvent
{
    [ScriptableMember(ScriptAlias = "eventContent")]
    public int EventContent { get; set; }
}

I pass the object from Silverlight like this:

  var jsonObject = new MyEvent { EventContent = 1 };
  HtmlPage.Window.Invoke("publishValue", topic, jsonObject);

And in javascript I’m doing the following:

 alert(topic);
 alert(jsonObject);
 alert(JSON.stringify(jsonObject));

When I use the debugger I only see the jsonObject as of type Object but the call alert(jsonObject) returns the correct type and if I access the property jsonObject.eventContent I get the correct value back, but it doesn’t serialize correctly with JSON.stringify.

Anyone tell what I’m doing wrong?

I don’t want to have to serialize the object in Silverlight before sending to javascript.

Cheers

AWC

Answer 1

I’ve managed to solve the problem!

Instead of declaring an object like this for passing from Silverlight to javascript:

[ScriptableType()] 
public class MyEvent 
{ 
    [ScriptableMember(ScriptAlias = "eventContent")] 
    public int EventContent { get; set; } 
} 

I use the System.Json namepsace and create a JsonObject like this:

  var ob = new JsonObject
  {
       {"eventContent", 1}
  };

Check out the documentation of System.Json.JsonObject for more info.

Cheers

AWC