TCustomVirtualQuery Events

Events of the TCustomVirtualQuery class.

For a complete list of the TCustomVirtualQuery class members, see the TCustomVirtualQuery Members topic.


Name Description

AfterExecute (inherited from TCustomDADataSet)

Occurs after a component has executed a query to database.

AfterFetch (inherited from TCustomDADataSet)

Occurs after dataset finishes fetching data from server.

AfterUpdateExecute (inherited from TCustomDADataSet)

Occurs after executing insert, delete, update, lock and refresh operations.

BeforeFetch (inherited from TCustomDADataSet)

Occurs before dataset is going to fetch block of records from the server.

BeforeUpdateExecute (inherited from TCustomDADataSet)

Occurs before executing insert, delete, update, lock, and refresh operations.


Occurs when the connection is opened to register the user-defined collation used in the query text.


Occurs when the query is opened to register the user-defined functions used in the query text.

OnUpdateError (inherited from TMemDataSet)

Occurs when an exception is generated while cached updates are applied to a database.

OnUpdateRecord (inherited from TMemDataSet)

Occurs when a single update component can not handle the updates.

See Also

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