private void InitExistBindingPair(ComboBox cb, PropertyInfo p, BindingPair[] pairs)
 {
     foreach (BindingPair pir in pairs)
     {
         if (pir.PropertyInfo.Equals(p))
         {
             if (pir.PropertyValue is PropertyValueByValue)
             {
                 object txt = (pir.PropertyValue as PropertyValueByValue).Value;
                 if (txt != null)
                 {
                     cb.Text = txt.ToString();
                 }
             }
             else if (pir.PropertyValue is PropertyValueByVar)
             {
                 cb.Text = (pir.PropertyValue as PropertyValueByVar).VarValue;
             }
             else if (pir.PropertyValue is PropertyValueByRef)
             {
                 PropertyValueByRef  refv = pir.PropertyValue as PropertyValueByRef;
                 BindingScriptObject obj  = new BindingScriptObject(refv.RefAction, refv.RefBindingAttribute, refv.RefPropertyInfo, p);
                 cb.Items.Add(obj);
                 cb.SelectedIndex = cb.Items.Count - 1;
             }
             break;
         }
     }
 }
            public BindingPair ToBindingPair()
            {
                PropertyValueByRef refv = new PropertyValueByRef();

                refv.ArgType             = enumArgType.Ref;
                refv.RefAction           = RefAction;
                refv.RefPropertyInfo     = RefPropertyInfo;
                refv.RefBindingAttribute = RefBindingAtt;
                return(new BindingPair(TargetPropertyInfo, refv));
            }