Tiraggo.Interfaces.tgTransactionScope.Enlist C# (CSharp) Method

        public static void Enlist(IDbCommand cmd, string connectionString, CreateIDbConnectionDelegate creator)
        {
            tgTransactionScope currentTx = GetCurrentTx();

            if (currentTx == null || currentTx.option == tgTransactionScopeOption.Suppress)
            {
                cmd.Connection = creator();
                cmd.Connection.ConnectionString = connectionString;
                cmd.Connection.Open();
            }
            else
            {
                Transaction tx = null;

                if (currentTx.root.transactions.ContainsKey(connectionString))
                {
                    tx = currentTx.root.transactions[connectionString] as Transaction;
                }
                else
                {
                    tx = new Transaction();

                    IDbConnection cn = creator();
                    cn.ConnectionString = connectionString;
                    cn.Open();

                    // The .NET framework has a bug in that the IDbTransaction only maintains
                    // a weak reference to the Connection, thus, we put a strong reference
                    // on it.
                    tx.sqlCn = cn;

                    if (_isolationLevel != IsolationLevel.Unspecified)
                    {
                        tx.sqlTx = cn.BeginTransaction(_isolationLevel);
                    }
                    else
                    {
                        tx.sqlTx = cn.BeginTransaction();
                    }

                    currentTx.root.transactions[connectionString] = tx;
                }

                cmd.Connection  = tx.sqlTx.Connection;
                cmd.Transaction = tx.sqlTx;
            }
        }