EventQuery Class Members
- Last UpdatedAug 21, 2026
- 2 minute read
The following tables list the members exposed by EventQuery.
| Name | Description | |
|---|---|---|
![]() | QueryResult | Gets one row of history data query output. |
| Name | Description | |
|---|---|---|
![]() | AddEventFilter | Adds the event filter. |
![]() | AddEventFilterCondition | Adds the event filter condition. |
![]() | Dispose | Overloaded. The EventQuery destructor method. |
![]() | EndQuery | Ends the history query and releases the query context on the historian server. |
![]() | MoveNext | Loads the next data row into the QueryResult property of the history query. Can be called in a loop after the StartQuery() call until False is returned. |
![]() | StartQuery | Starts the query. |


