Retrieve JSON result set

What is the best method for retrieving a result set and returning a JSON object? I tried using a DataSet, but received a serialization error.

TIA

You do not have to do anything special to convert in JSON. The Asp.net Ajax Automatically handles it. But in case you want to some manual proessing use the JavaScriptSerializer.

You do not have to do anything special to convert in JSON. The Asp.net Ajax Automatically handles it. But in case you want to some manual proessing use the JavaScriptSerializer. The DataSet is not supported with the Current Version, Add the January CTP to work with DataSet and DataTable.

I am a little confused. Can you provide an example of how to retrieve a JSON serialized result set? Where do I find the January CTP?

TIA

You can find the January CTP from this linkhttp://www.microsoft.com/downloads/details.aspx?familyid=4CB52EA3-9548-4064-8137-09B96AF97617&displaylang=en