How to Bind Button Control to Autocompletebox in Silverlight ?

Hi,
i am binding observable collection to AutoCompletebox in Silverlight. But here i need one button in binding data at first row. i have bind the button control in Data Template but it is binding to every row in autocomplete data, but here i need button at first row only.


if anyone know about this share to me.


Regards
Nanda Kishore.CH