long? maxCount = db.Database.SqlQuery<nullabled<long>>("select max(id) from [Student]").FirstOrDefault();
if(maxCount !=null)
maxid = maxCount;
maxid ++;
![](https://www.icode9.com/i/l/?n=20&i=blog/603644/202107/603644-20210722232324151-1343176980.jpg)
标签:FirstOrDefault,maxid,33,sql,linq,maxCount,主键
来源: https://www.cnblogs.com/sweettie/p/15046933.html