关于报此异常，原因是事务不能循环提交，一个方法中事务只能提交一次。
System.InvalidOperationException:This.NpgsqlTransaction has completed;it is no longer usable. at Npgsql.NpgsqlTransaction.CheckCompleted() in ...正确使用方法
using (var pay = _postgreDbContext.Database.BeginTransaction()) { try { billItem.review_remark = "通过"; foreach (var item in Settlement) { item.status = 2; } _postgreDbContext.SaveChanges(); pay.Commit();//注意放到循环外面 } catch (Exception ex) { throw ex; } }
转载于:https://www.cnblogs.com/personblog/p/11419962.html
