WinForm应用程序框架设计之WinAction（数据操作）

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我们来先看看WinAction的有关数据操作的流程：（包括更新数据操作和取消更新的操作）

具体的参考代码：

更新数据操作：

        /// <summary>        /// 实体更新时执行        /// </summary>        /// <param name="entity">当前操作的实体</param>        /// <param name="caller">修改对象(窗体)</param>        /// <param name="sender">修改对象(窗体)的按钮</param>        /// <param name="e">唤出窗体的事件参数</param>        public virtual void SaveEntity(object entity, object caller, object sender, EventArgs e)        {            try            {                object mResult = useBll.Update((T)entity);                //卸载修改窗体的方法                if (caller is IEditDataForm)                    UnloadEditForm(caller as IEditDataForm);                //隐藏执行该方法的窗体(修改窗体)                if (caller is Form)                    (caller as Form).Hide();                if (AfterUpdateEntity != null)                    AfterUpdateEntity(entity, caller, this, e);            }            catch (Exception ex)            {                /*                if (entity is Entity)                {                    if (!(entity as Entity).IsNewEntity)                    {//出错时把数据实体的数据进行恢复                        if (caller is IBindEntityAware)                            (caller as IBindEntityAware).RecoverEntity(entity);                    }                }*/                if (AfterUpdateEntityError != null)                    AfterUpdateEntityError(entity, caller, this, e);                else                    throw new Exception(ex.Message, ex);            }        }        /// <summary>        /// 更新实体对象列表时执行        /// </summary>        /// <param name="entity"></param>        /// <param name="caller">修改对象(窗体)</param>        /// <param name="sender">修改对象(窗体)的按钮</param>        /// <param name="e">唤出窗体的事件参数</param>        public virtual void UpdateEntitys(object entity, object caller, object sender, EventArgs e)        {            try            {                if (caller is IDataListEdit)                {                    IEnumerable deletedList = (caller as IDataListEdit).GetDeletedDataList();                    foreach (object delData in deletedList)                        useBll.Delete(TransformToEntity(delData));                    IEnumerable updateList = (caller as IDataListEdit).GetCurrentDataList();                    foreach (object curData in updateList)                        useBll.Update(TransformToEntity(curData));                }                //卸载修改窗体的方法                if (caller is IEditDataForm)                    UnloadEditForm(caller as IEditDataForm);                if (caller is Form)                    (caller as Form).Hide();                if (AfterUpdateEntity != null)                    AfterUpdateEntity(entity, caller, this, e);            }            catch (Exception ex)            {                if (AfterUpdateEntityError != null)                    AfterUpdateEntityError(entity, caller, this, e);                else                    throw new Exception(ex.Message, ex);            }        }

注意，有两种更新的方式：一种是单个数据实体更新，另外一个就是批量更新。

取消操作：

        #region (修改窗体)实体操作方法        /// <summary>        /// editform执行的取消实体更新时执行        /// </summary>        /// <param name="entity">当前操作的实体</param>        /// <param name="caller">修改对象(窗体)</param>        /// <param name="sender">修改对象(窗体)的按钮</param>        /// <param name="e">唤出窗体的事件参数</param>        public virtual void CancelUpdateEntity(object entity, object caller, object sender, EventArgs e)        {            //editform执行的取消更新过程            if (AfterUpdateEntityCancel != null)                AfterUpdateEntityCancel(entity, caller, this, e);            if (caller is IEditDataForm)                UnloadEditForm(caller as IEditDataForm);            if (caller is Form)                (caller as Form).Hide();        }

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