WinForm应用程序框架设计之WinAction（删除数据）

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我们来先看看WinAction的删除数据的流程：

具体的参考代码：

        public virtual void DeleteEntity(object entity, object caller, object sender, EventArgs e)        {            if (caller is IDataListView)            {                IDataListView listForm = caller as IDataListView;                if (null == listForm.DataList || (listForm.DataList is ICollection && (listForm.DataList as ICollection).Count == 0))                    return;            }            if (MessageBox.Show("确实要删除当前记录？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)                return;            //判断当前删除的是否是新增的记录。(如果是新增的那条，其id为-1)            if (entity is Entity && (entity as Entity).IsNewEntity)            {                Form eForm = CallEditForm(caller);                if (eForm.Visible)                    eForm.Close();                return;            }            useBll.Delete((T)entity);            if (updateFreshByDB && caller is IDataListView && (caller as IDataListView).RefreshEntityList != null)                (caller as IDataListView).RefreshEntityList((caller as IDataListView).SearchEntity, caller, sender, e);        }

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