RavenDB and MsSql inside same transaction scope results in WebException

问题

In response to another question on stackoverflow RavenDB does not play nicely with Transaction Scope i have created a test case where i isolate my transactions for storing and reading. In my test case i am making a call to a raven document store and a mssql database within the same transaction. But i get a Web Exception. Any ideas why or how to solve it. Below is my code

    private static string con = "Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=TestDB;Data Source=.";
    static void Main(string[] args)
    {
        using (var scope = new TransactionScope())
        {
            additemtosql();
        }
        Console.WriteLine((itemSqlCount() == 0));

        using (var mDocumentStore = new DocumentStore())
        {
            mDocumentStore.ParseConnectionString("Url=http://localhost:8081");
            mDocumentStore.Initialize();
            using (var scope = new TransactionScope())
            {
                additemtoravendb(mDocumentStore);

                Console.WriteLine((itemSqlCount() == 0));

                scope.Complete();
            }
            Console.WriteLine(itemRavenCount(mDocumentStore) == 1);
        }

    }
    private static void additemtoravendb(IDocumentStore mDocumentStore)
    {
        using (var session = mDocumentStore.OpenSession())
        {
            var dog = new Dog()
            {
                Age = 10,
                BirthDay = DateTime.Now,
                Breed = "Dalmation",
                Name = "Fluffy"
            };
            session.Store(dog);
            session.SaveChanges();
        }
    }

    private static int itemRavenCount(IDocumentStore mDocumentStore)
    {
        using (var session = mDocumentStore.OpenSession())
        {
            var dogs = session.Query<Dog>().ToList();
            return dogs.Count();
        }
    }
    private static void additemtosql()
    {
        var sql = "INSERT INTO RECORDS_TEXT VALUES (1, 'XX', 'XX') ";
        using (var connection = new SqlConnection(con))
        using (var command = new SqlCommand(sql, connection))
        {
            connection.Open();

            command.ExecuteNonQuery();
            Console.WriteLine((itemSqlCount() == 1));
        }
    }
    private static int itemSqlCount()
    {
        using (var connection = new SqlConnection(con))
        using (var command = new SqlCommand("", connection))
        {
            connection.Open();
            command.CommandText = "SELECT COUNT(*) FROM RECORDS_TEXT";
            using (var reader = command.ExecuteReader())
            {
                reader.Read();
                var count = reader.GetInt32(0);
                return count;
            }
        }
    }

I am well aware that i start with a transaction scope and then i don't complete it, it's what i am testing. Not completing a transaction should roll it back, if i'm right. I want to test a failed transaction, and then a successful one.

And the reason why i'm calling ravendb and mssql inside the same transaction here is because i am simulating what might happen with nested transactions where one call might be to sql and another to raven, without knowing the other call was even made.

来源：https://stackoverflow.com/questions/24828095/ravendb-and-mssql-inside-same-transaction-scope-results-in-webexception