How to bind gridview using Nhibernate

Question

I am using Nhibernate with asp.net

i have got data using HQL in Ilist

but when i bind Ilist with gridview

I gives me error "customername" field not foung in selected datasiurce

althoug i define column in gridview and there is a column with same name

My confusion is

when i decalare Ilist what should be it type


i mean i have 2 classes
1) Customer 2) City

i have got data from database by using this Query
"SELECT ct.Cityname,cust.CustomerName,cust.Gender FROM City as ct,Customers as cust where ct.Cityid=cust.Cityid"

means

2 different table

so what should be ilist type
(eg)

IList Lst = new List();
OR
IList Lst = new List();

and how to bind it with gridview

thanks