嵌套事务的正确 TransactionScope

Question

我想将第一个事务范围设置为任何东西（一般的东西），并始终在第二个事务范围中设置隔离级别。这可能吗？

    using (var scope = new TransactionScope())
    {
        using (var scope = new TransactionScope(TransactionScopeOption.Required, new TransactionOptions { IsolationLevel = IsolationLevel.RepeatableRead }))
        {
                // some service logic
        }
    }

第二个 using 语句引发错误：为 TransactionScope 指定的事务的 IsolationLevel 与为范围请求的值不同。

当前错误是第一个 transactionScope 默认为 Serializable，我无法添加新数据，但在 repeatableRead 中我可以添加数据。

Answer 1

你可以使用这样的东西

var option1 = new TransactionOptions
{
 IsolationLevel = IsolationLevel.ReadCommitted,
 Timeout = TimeSpan.FromSeconds(60)
};

var option2 = new TransactionOptions
{
 IsolationLevel = IsolationLevel.RepeatableRead,
 Timeout = TimeSpan.FromSeconds(60)
};

using (var scopeOuter = new TransactionScope(TransactionScopeOption.Required, option1))
{
using (var conn = new SqlConnection(connectionString))
{
    using (SqlCommand cmd = conn.CreateCommand())
    {

    }
}
using (var scopeInner = new TransactionScope(TransactionScopeOption.Required, option2))
{
    using (var conn = new SqlConnection(connectionString))
    {
        using (SqlCommand cmd = conn.CreateCommand())
        {

        }
    }
    scopeInner.Complete();
}
scopeOuter.Complete();

}

希望对你有帮助..