protected void cmb_ItemRequestedByValue(object source, DevExpress.Web.ListEditItemRequestedByValueEventArgs e)
    {
        MyObject obj = session.GetObjectByKey <MyObject>(e.Value);

        if (obj != null)
        {
            cmb.DataSource = new MyObject[] { obj };
            cmb.DataBindItems();
        }
    }
 void dropDown_ItemRequestedByValue(object source, DevExpress.Web.ListEditItemRequestedByValueEventArgs e)
 {
 }