2015.10.14-TransactionScope测试

测试代码：

int i = 10;
int xx = 20;
List<string> lst = null;

Action doSth = () =>
{
    using (var db = new TestSystemEntities())
    {
        var f = db.ABC.ToList();
        f.ForEach(x => x.C = "TestTransactionScope");
        db.SaveChanges();
    }

    new Task(() =>
    {
        using (var db = new TestSystemEntities())
        {
            var f = db.ABC.ToList();
            f.ForEach(x => x.C = "AsyncTestTransactionScope");
            db.SaveChanges();
        }
    }).Start();

    i = 20;
    lst.Insert(0, "xx");
    xx = 100;
};

try
{
    TransactionOptions tr = new TransactionOptions()
    {
        IsolationLevel = IsolationLevel.Serializable,
        Timeout = TransactionManager.MaximumTimeout
    };
    using (TransactionScope scope = new TransactionScope(TransactionScopeOption.Required, tr))
    {
        doSth();
        scope.Complete();
    }
}
catch (Exception ex)
{
    Console.WriteLine("exception happens");
}

Console.WriteLine("i: {0}, xx: {1}", i, xx);

上面的代码，由于lst一直为null，当执行到lst.Insert的时候，会出现异常，触发事务回滚。

测试结论：回滚效果，同步SQL里面的操作回滚了，但内存中的object并未回滚，异步的SQL里面也未回滚.

如图：