Description ​
The UpdateCount property indicates how many times BeginUpdate has been called without a matching EndUpdate. While UpdateCount > 0, notifications are deferred until UpdateCount reaches zero.
TNotifiablePersistent.UpdateCountReturns the current nesting level of BeginUpdate calls.
property UpdateCount: Integer read FUpdateCount;The UpdateCount property indicates how many times BeginUpdate has been called without a matching EndUpdate. While UpdateCount > 0, notifications are deferred until UpdateCount reaches zero.