TransactionScope TransactionAbortedException

大家好，又见面了，我是你们的朋友全栈君。

今天在调试代码的时候遇到一个这样的错误：

System.Transactions.TransactionAbortedException was caught
HResult=-2146233087
Message=The transaction has aborted.
Source=System.Transactions

查了一下原因，主要是由于嵌套事务中，底层事务没有关闭，然后上层继续使用导致的，不过前提是TransactionScope中使用的是TransactionScopeOption.Required

代码示例：

public void TransactionScopeTest()
        {
            using(TransactionScope ts=new TransactionScope(TransactionScopeOption.Required))
            {
                //do something

                using(TransactionScope tsa=new TransactionScope(TransactionScopeOption.Required))
                {
                    //do A
                    tsa.Complete();
                }

                using (TransactionScope tsb = new TransactionScope(TransactionScopeOption.Required))
                {
                    //do B
                    tsb.Complete();
                }
                ts.Complete();
            }
        }

上述代码时一个TransactionScope内嵌两个TransactionScope，如果tsa.Complete()没有执行，

那么在using (TransactionScope tsb = new TransactionScope(TransactionScopeOption.Required))就会抛出TransactionAbortedException异常：The transaction has aborted

所以在使用TransactionScope的时候要注意，嵌套使用的时候，如果出现问题需要尽快的抛出，而不是任由其继续走下去，比如：

public void TransactionScopeTest()
        {
            using(TransactionScope ts=new TransactionScope(TransactionScopeOption.Required))
            {
                //do something
                bool isASuccess = true;
                using(TransactionScope tsa=new TransactionScope(TransactionScopeOption.Required))
                {
                    //do A
                    tsa.Complete();
                }
                if(!isASuccess)
                {
                    return;
                }

                bool isBSuccess = true;
                using (TransactionScope tsb = new TransactionScope(TransactionScopeOption.Required))
                {
                    //do B
                    tsb.Complete();
                }
                if(!isBSuccess)
                {
                    return;
                }

                ts.Complete();
            }
        }