Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded.

EF6进行Insert操作的时候提示错误

Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded.

1：确认model中是否外键关联问题

　　解决方案：外键关联不要修改外键表的数据，可以暂是设置NotMapped或者外键model=null处理

2：确认model对应数据库表中id是否设置主键且主键自增长

　　解决方案：数据库设置主键并主键自增长

 

这是目前我遇到的两种情况，如果还没有解决您的问题，请留言吧！