//窗体状态改变后
 protected override void DataStateChanged(FormDataState NewState)
 {
     base.DataStateChanged(NewState);
     if (this.IsAddOrEdit)
     {
         xtraTabControl1.SelectedTabPageIndex = 0;
     }
 }
 /// <summary>
 /// 窗体状态改变以后
 /// </summary>
 /// <param name="NewState"></param>
 protected virtual void DataStateChanged(FormDataState NewState)
 {
     if (IsAddOrEdit)
     {
         SetEditModel();
     }
     else
     {
         SetViewModel();
     }
     UpdateNavButton();
 }
 /// <summary>
 /// 窗体状态改变前
 /// </summary>
 /// <param name="OldState"></param>
 /// <param name="NewState"></param>
 protected virtual void DataStateChanging(FormDataState OldState, FormDataState NewState)
 {
 }
 //窗体状态改时
 protected override void DataStateChanging(FormDataState OldState, FormDataState NewState)
 {
     base.DataStateChanging(OldState, NewState);
 }
 //窗体状态改时
 protected override void DataStateChanging(FormDataState OldState, FormDataState NewState)
 {
     base.DataStateChanging(OldState, NewState);
 }
 //窗体状态改变后
 protected override void DataStateChanged(FormDataState NewState)
 {
     base.DataStateChanged(NewState);
 }