ASP.NET 中的 TransactionScope 问题

Question

我已经构建了一个类来在两个不同的数据源之间同步数据。这种同步分为多个部分（和方法）。每个方法都有自己的 TransactionScope，方法按顺序运行。

每次运行此代码时，我都会收到以下错误消息：

“与当前连接关联的事务已完成但尚未释放。必须释放该事务，该连接才能用于执行SQL语句。”

以下代码是带有 TransactionScope 的此类方法的示例：

private void SomeMethod()
{
        try
        {
            using (var _transactionScope = new TransactionScope(TransactionScopeOption.Required, transactionOptions))
            {
                using (SqlConnection _connection = new SqlConnection(connectionstring))
                {
                    _connection.Open();

                    DoSomething()...
                }

                _transactionScope.Complete();
            }
        }
        catch (TransactionAbortedException e)
        {
            nlog.Error(string.Format("The transaction has been aborted: {0}", e.Message));
            throw e;
        }
        catch (Exception e)
        {
            throw e;
        }
}

似乎调用 "_transactionScope.Complete()" 不足以杀死事务范围。有没有人知道我做错了什么？

提前致谢！

更新 感谢您的回复。经过几次测试，我发现只有在一种方法中有多个查询时才会出现此问题。例如：

 try
    {
        using (TransactionScope _transactionScope = new TransactionScope(TransactionScopeOption.Required, transactionOptions))
        {
            using (SqlConnection _connection = new SqlConnection(connectionstring))
            {
                _connection.Open();

                //new method:
                using (TransactionScope _transactionScope = new TransactionScope(TransactionScopeOption.Suppress))
                {
                    //a selectquery
                }

                //an update or insert query

            _transactionScope.Complete();
        }
    }

Answer 1

尝试更改构造函数。

using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required,
                new TransactionOptions()
                { 
                    IsolationLevel = System.Transactions.IsolationLevel.Serializable,
                    Timeout = TimeSpan.FromSeconds(120)
                }))

Answer 2

我做了一个在事务范围内创建 Max Timeout 值的方法

public static TransactionScope CreateDefaultTransactionScope(TransactionScopeOption option = TransactionScopeOption.Required)
    {
        var transactionOptions = new TransactionOptions();
        transactionOptions.Timeout = TimeSpan.MaxValue;
        transactionOptions.IsolationLevel = IsolationLevel.ReadCommitted;
        return new TransactionScope(option, transactionOptions);
    }

然后你会使用它：

using (TransactionScope transaction = TransactionHelper.CreateDefaultTransactionScope())