public static bool FoxRecordLock(this AdsExtendedReader rdr, string table)
        {
            var isLocked = false;

            for (var i = 0; i < 100; i++)
            {
                try {
                    rdr.LockRecord();
                    isLocked = rdr.IsRecordLocked();
                    if (isLocked)
                    {
                        break;
                    }
                }
                catch (Exception e) {
                    Debug.WriteLine($"waiting for lock {rdr.RecordNumber}");
                    System.Threading.Thread.Sleep(500);
                }
            }
            if (!isLocked)
            {
                Debug.WriteLine($"Unable to flock {table}");
            }
            return(isLocked);
        }