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

        public bool TryRemoveBlockTransactions(UInt256 blockHash)
        {
            using (var handle = this.cursorCache.TakeItem())
            {
                var cursor = handle.Item;

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

                    DeleteBlockIndex(cursor, blockHash);

                    Api.JetSetCurrentIndex(cursor.jetSession, cursor.blocksTableId, "IX_BlockIndexTxIndex");

                    Api.MakeKey(cursor.jetSession, cursor.blocksTableId, blockIndex, MakeKeyGrbit.NewKey);
                    Api.MakeKey(cursor.jetSession, cursor.blocksTableId, 0, MakeKeyGrbit.None);
                    if (!Api.TrySeek(cursor.jetSession, cursor.blocksTableId, SeekGrbit.SeekGE))
                        return false;

                    Api.MakeKey(cursor.jetSession, cursor.blocksTableId, blockIndex, MakeKeyGrbit.NewKey);
                    Api.MakeKey(cursor.jetSession, cursor.blocksTableId, int.MaxValue, MakeKeyGrbit.None);
                    if (!Api.TrySetIndexRange(cursor.jetSession, cursor.blocksTableId, SetIndexRangeGrbit.RangeUpperLimit))
                        return false;

                    // remove transactions
                    do
                    {
                        Api.JetDelete(cursor.jetSession, cursor.blocksTableId);
                    }
                    while (Api.TryMoveNext(cursor.jetSession, cursor.blocksTableId));

                    // decrease block count
                    Api.EscrowUpdate(cursor.jetSession, cursor.globalsTableId, cursor.blockCountColumnId, -1);

                    jetTx.CommitLazy();
                    return true;
                }
            }
        }