/// </summary>
    public sealed class SQLiteTransaction : DbTransaction
    {
        /// <summary>
        /// The connection to which this transaction is bound
        /// </summary>
        internal SQLiteConnection _cnn;


        internal int _version; // Matches the version of the connection






        private IsolationLevel _level;



        /// <summary>
        /// Constructs the transaction object, binding it to the supplied connection
        /// </summary>
        /// <param name="connection">The connection to open a transaction on</param>
        /// <param name="deferredLock">TRUE to defer the writelock, or FALSE to lock immediately</param>
        internal SQLiteTransaction(SQLiteConnection connection, bool deferredLock)
................................................................................
        /// <summary>
        /// Issue a ROLLBACK command against the database connection,
        /// optionally re-throwing any caught exception.
        /// </summary>
        /// <param name="throwError">
        /// Non-zero to re-throw caught exceptions.
        /// </param>
        internal void IssueRollback(bool throwError)
        {
            SQLiteConnection cnn = Interlocked.Exchange(ref _cnn, null);

            if (cnn != null)
            {
                int level = cnn._transactionLevel;

................................................................................
        /// </summary>
        /// <param name="throwError">
        /// Non-zero to throw an exception if a state inconsistency is found.
        /// </param>
        /// <returns>
        /// Non-zero if this transaction is valid; otherwise, false.
        /// </returns>
        internal bool IsValid(bool throwError)
        {
            if (_cnn == null)
            {
                if (throwError == true) throw new ArgumentNullException("No connection associated with this transaction");
                else return false;
            }

    /// </summary>
    public sealed class SQLiteTransaction : DbTransaction
    {
        /// <summary>
        /// The connection to which this transaction is bound
        /// </summary>
        internal SQLiteConnection _cnn;

        /// <summary>
        /// Matches the version of the connection.
        /// </summary>
        private int _version;

        /// <summary>
        /// The isolation level for this transaction.
        /// </summary>
        private IsolationLevel _level;

        ///////////////////////////////////////////////////////////////////////////////////////////////

        /// <summary>
        /// Constructs the transaction object, binding it to the supplied connection
        /// </summary>
        /// <param name="connection">The connection to open a transaction on</param>
        /// <param name="deferredLock">TRUE to defer the writelock, or FALSE to lock immediately</param>
        internal SQLiteTransaction(SQLiteConnection connection, bool deferredLock)
................................................................................
        /// <summary>
        /// Issue a ROLLBACK command against the database connection,
        /// optionally re-throwing any caught exception.
        /// </summary>
        /// <param name="throwError">
        /// Non-zero to re-throw caught exceptions.
        /// </param>
        private void IssueRollback(bool throwError)
        {
            SQLiteConnection cnn = Interlocked.Exchange(ref _cnn, null);

            if (cnn != null)
            {
                int level = cnn._transactionLevel;

................................................................................
        /// </summary>
        /// <param name="throwError">
        /// Non-zero to throw an exception if a state inconsistency is found.
        /// </param>
        /// <returns>
        /// Non-zero if this transaction is valid; otherwise, false.
        /// </returns>
        private bool IsValid(bool throwError)
        {
            if (_cnn == null)
            {
                if (throwError == true) throw new ArgumentNullException("No connection associated with this transaction");
                else return false;
            }