检查是否有任何待保存的更改要保存 [英] Check if there are any pending changes to be saved

问题描述

有没有办法在实体框架中找出我的实体上下文中是否有未保存的更改?

Is there a way to find out whether there are unsaved changes in my entity context, in the Entity Framework?

推荐答案

这可能有效(如果您所说的更改是指添加、删除和修改的实体):

This might work (if by changes you mean added, removed and modified entities):

bool changesMade = (context.ObjectStateManager.GetObjectStateEntries(EntityState.Added).Count() +
                    context.ObjectStateManager.GetObjectStateEntries(EntityState.Deleted).Count() +
                    context.ObjectStateManager.GetObjectStateEntries(EntityState.Modified).Count()
                    ) > 0;

改进的代码:

bool changesMade = context.
                   ObjectStateManager.
                   GetObjectStateEntries(EntityState.Added | 
                                         EntityState.Deleted | 
                                         EntityState.Modified
                                        ).Any();

这篇关于检查是否有任何待保存的更改要保存的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！