Datasnap.Provider.TCustomProvider.AfterRowRequest
Delphi
property AfterRowRequest: TRemoteEvent read FAfterRowRequest write FAfterRowRequest;
C++
__property Datasnap::Dbclient::TRemoteEvent AfterRowRequest = {read=FAfterRowRequest, write=FAfterRowRequest};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | protected | Datasnap.Provider.pas Datasnap.Provider.hpp |
Datasnap.Provider | TCustomProvider |
Description
Occurs after the provider fetches new information about the current record.
Write an AfterRowRequest event handler to send custom information to a client dataset along with information about the current record. AfterRowRequest is part of the mechanism by which a provider and a client dataset communicate information about data fetching. When the provider is part of a stateless application server, this mechanism allows the provider and the client dataset to communicate persistent state information.
When the client dataset calls the AS_RowRequest method of the IAppServer interface, the following events occur:
1.The provider receives a BeforeRowRequest event, where it can respond to or change custom information that the client dataset sends.
2.The provider creates a delta packet that contains the requested information.
3.The provider receives an AfterRowRequest event, where it can encode custom information into its OwnerData parameter or respond to information from the BeforeRowRequest event handler.
4.The client dataset receives an AfterRowRequest event, where it can respond to the custom information returned by the provider in its AfterRowRequest event handler.
AfterRowRequest is of type Datasnap.DBClient.TRemoteEvent.