Transactionen mit mehreren TableAdaptern

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public class TransactionManager
    {
        private SqlConnection _connection;
        private List<object> _adapters;
        private SqlTransaction _transaction;
        public SqlTransaction Transaction
        {
            get { return this._transaction; }
            set { this._transaction = value;}
        }
        
        //Konstruktor
        public TransactionManager() { _adapters = new List<object>(); }

        /// <summary>
        /// Hier kann ein Adapter registriert werden. 
        /// </summary>
        /// <param name="adapter"></param>
        public void registerAdapter(object adapter)
        {            
            // suche Connection
            PropertyInfo conn = adapter.GetType().GetProperty("Connection", BindingFlags.Instance | BindingFlags.NonPublic);            
            if (this._connection == null)            
                _connection = conn.GetValue(adapter, null) as SqlConnection;            
            else            
                conn.SetValue(adapter, _connection, null);
            _adapters.Add(adapter);

        }
        public void registerAdapter(object[] adapters)
        {
            foreach (object a in adapters)
                this.registerAdapter(a);
        }
        public void BeginTransaction()
        {
            if (this._connection == null)
                throw new Exception("no Adapter registered");
            if (this._connection.State != ConnectionState.Open) this._connection.Open();
            // Create the transaction and assign it to the Transaction property 
            this.Transaction = this._connection.BeginTransaction();

            // set the Transaction for the others too
            foreach (object curAdapter in _adapters)
            {
                PropertyInfo adapterProp = curAdapter.GetType().GetProperty("Adapter", BindingFlags.Instance | BindingFlags.NonPublic);
                SqlDataAdapter dataAdapter = adapterProp.GetValue(curAdapter, null) as SqlDataAdapter;

                if (dataAdapter.InsertCommand != null)
                    dataAdapter.InsertCommand.Transaction = this.Transaction;
                if (dataAdapter.UpdateCommand != null)
                    dataAdapter.UpdateCommand.Transaction = this.Transaction;
                if (dataAdapter.DeleteCommand != null)
                    dataAdapter.DeleteCommand.Transaction = this.Transaction;

                PropertyInfo commandCollProp = curAdapter.GetType().GetProperty("CommandCollection", BindingFlags.Instance | BindingFlags.NonPublic);
                SqlCommand[] commandCollection = commandCollProp.GetValue(curAdapter, null) as SqlCommand[];
                foreach (SqlCommand command in commandCollection)
                {
                    command.Transaction = this.Transaction;
                }       
            }
        }
        public void Comit()
        {
            this.Transaction.Commit();
            this._connection.Close();
        }
        public void Rollback()
        {
            this.Transaction.Rollback();
            this._connection.Close();
        }
    }


// möglicher Aufruf
TransactionManager transactionManager = new TransactionManager();
                transactionManager.registerAdapter(new object[] { ua, cA, ceA });                
                transactionManager.BeginTransaction();

try{
// do something
ua.dosomething();
cA.dosomething();
transactionManager.Comit();      
}
 catch
                {
                    transactionManager.Rollback();
                    throw;
                }