EF 多线程插入 Insert into DbContext Multithreading

当通过task 插入多条数据时报错。

DBcontext 不是线程安全的， 如果是WebAPI 为每个请求创建DbContext

部分解释：

http://stackoverflow.com/questions/28106267/insert-into-dbcontext-multithreading#

DbContext isn't thread-safe.

One context and many threads - it is a bad practice. It is best to create the context for each thread. I could recommend to you reconsider your algorithm and reate the context for each thread