code snippet rowdatabound binding a control

protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow &&
        (e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit)
    {
        // Here you will get the Control you need like:
        DropDownList dl = (DropDownList)e.Row.FindControl("ddlPBXTypeNS");
    }
}