binding data to a radiobuttonlist within an ItemTemplate

Hi,


I have a datalist control and within the Itemplate I
have a radiobuttonlist control . I am binding data to the
datalist control in Page_load . Also I have sqldatareader
object that needs to be binded to the radiobutton list. I
am not able to bind the datareader to the radiobuttonlist
control as it is within the Itemtemplate. I am new
to .Net. Could someone please let me know what I should be
doing to bind the data to the radiobuttonlist within the
Itemtemplate.
When I try binding it, I get the following error:

System.NullReferenceException: Object reference not set to
an instance of an object.

Thanks..