asp.net - Setting Rating controls CurrentValue in ASP.NET script instead of code behind

Question

I want to set the ASP.NET Ajax Control Toolkit's Rating control's CurrentValue in ASP.NET script instead of code behind i.e. in PageLoad or any other kind of event. I want to bind it to the SqlDataSource on my page. (The way we can bind GridView through its SmartTask panel, which establishes ites binding in ASP.NET script) How can I do this?