Web Service Context Error...

[tom]

I update to Telerik Q1 2009, also, change TreeView web service from asmx to svc.

Here is the piece of code from Telerik Help:

<script type="text/javascript">
   function nodePopulating(sender, eventArgs)
   {
       varnode = eventArgs.get_node();
       var context =eventArgs.get_context();
       context["CategoryID"] =node.get_value();
   }
</script>

   [OperationContract]
   publicRadTreeNodeData[] GetTreeViewCategories(RadTreeNodeDatanode, object context)
   {
       // extract the"context" dictionary information. OnClientNodePopulating event loads thedictionary
       IDictionary<string, object> contextDictionary =(IDictionary<string,object>)context;
....
   }

I get the error:

System.InvalidCastException was unhandled by user code

  Message="Unable to cast object of type 'System.Object' to type 'System.Collections.Generic.IDictionary`2[System.String,System.Object]'."

  Source="App_Code.3vtfiouj"

....

How do I fix it?

Thanks.

[tom]

Can anybody help me with this?

How context is sent using svc? Any example?

Thanks, 

[Veselin Vasilev]

Hi tom,

Please check this online example:
Load on Demand > WCF Web Service

Greetings,
Veselin Vasilev
the Telerik team

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[tom]

I folow the example, without linq, the context fails.

How to get the context without linq?

[Atanas Korchev]

Hi tom,

We confirm that the context property is not correctly populated during WCF load on demand. We will do our best to resolve that issue in the upcoming service pack. Let us know if this is urgent for you.

Regards,
Albert
the Telerik team

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[tom]

Thanks for confirming this.

I can use asmx in the mean time.