how to bind data in datalist with in gridview

               You have to write code in grid-view's row data bound event.
In that event you have to find the control in the grid view cell by it's name say "datalist1".

               After that type cast the control. once you have the datalist1 object you can assign it a data-source.

      protected void gvRatings_RowDataBound(object sender, GridViewRowEventArgs e)
      {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                DataList DataList1= ((DataList)e.Row.FindControl("DataList1"));
                DataList1.DataSource=<some data="" source="" object="">;
           //do what ever you want to do here using the value of your label
            }
      }
</some>