BitSharp.Esent.EsentBlockTxesStorage.TryGetTransaction C# (CSharp) Method

        public bool TryGetTransaction(UInt256 blockHash, int txIndex, out BlockTx transaction)
        {
            using (var handle = this.cursorCache.TakeItem())
            {
                var cursor = handle.Item;

                using (var jetTx = cursor.jetSession.BeginTransaction())
                {
                    int blockIndex;
                    if (!TryGetBlockIndex(cursor, blockHash, out blockIndex))
                    {
                        transaction = null;
                        return false;
                    }

                    Api.JetSetCurrentIndex(cursor.jetSession, cursor.blocksTableId, "IX_BlockIndexTxIndex");
                    Api.MakeKey(cursor.jetSession, cursor.blocksTableId, blockIndex, MakeKeyGrbit.NewKey);
                    Api.MakeKey(cursor.jetSession, cursor.blocksTableId, txIndex, MakeKeyGrbit.None);
                    if (Api.TrySeek(cursor.jetSession, cursor.blocksTableId, SeekGrbit.SeekEQ))
                    {
                        var blockTxHashColumn = new BytesColumnValue { Columnid = cursor.blockTxHashColumnId };
                        var blockTxBytesColumn = new BytesColumnValue { Columnid = cursor.blockTxBytesColumnId };
                        Api.RetrieveColumns(cursor.jetSession, cursor.blocksTableId, blockTxHashColumn, blockTxBytesColumn);

                        if (blockTxBytesColumn.Value != null)
                        {
                            var txHash = DbEncoder.DecodeUInt256(blockTxHashColumn.Value);
                            transaction = new BlockTx(txIndex, txHash, blockTxBytesColumn.Value.ToImmutableArray());
                            return true;
                        }
                        else
                        {
                            transaction = null;
                            return false;
                        }
                    }
                    else
                    {
                        transaction = null;
                        return false;
                    }
                }
            }
        }