Binding to object data source with nested collection

[murthy]

Hi,
 I have an object with hierarchy displayed below, and I need to bind to this using declarative binding in the ASPX page.

RootObject
   I_ StreetNames (collection)
          I_StreetID
  I_StreetName

Now I need to bind the DataTextField to StreetName and DataValueField to StreetID

Due to our architecture constraint I need to use object data source only. I would like to do a declarative binding.

I had tried the following options
ID="cboStreetName" DataSource='<%# Eval("StreetNames") %>' DataTextField="StreetName" DataValueField="StreetID" with the error
 Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control

DataSource='<%# DataBinder.Eval(Container,"StreetNames") %>' DataTextField="StreetName" DataValueField="StreetID"> with error
ASP.xxx_aspx' does not contain a property with the name 'StreetNames'

I am new to ASP.NET as well as Telerik Combobox.
I am working in ASP.NET 2.0 in Win XP enviroment.

Thanks in Advance
Murthy Meka

[Developer]

Got the same problem. Any help please?

Regards.