Datasnap.Provider.TDataSetProvider.OnDataRequest

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Delphi

property OnDataRequest: OleVariant read FOnDataRequest write FOnDataRequest;

C++

__property OnDataRequest;

Properties

Type	Visibility	Source	Unit	Parent
event	published	Datasnap.Provider.pas Datasnap.Provider.hpp	Datasnap.Provider	TDataSetProvider

Description

Occurs when a provider calls its DataRequest method.

Datasnap.Provider.TDataSetProvider.OnDataRequest inherits from Datasnap.Provider.TCustomProvider.OnDataRequest. All content below this line refers to Datasnap.Provider.TCustomProvider.OnDataRequest.

Occurs when a provider calls its DataRequest method.

Write an OnDataRequest event handler to do custom processing of data. OnDataRequest has no built-in use. Instead, it allows developers to augment the IAppServer interface so that clients in a multi-tiered application can communicate directly with an individual provider.

If an application does not provide an OnDataRequest event handler, calls to DataRequest return NULL.

Note: To provide the same sort of custom processing on the client side, use an automation method on the connection component.

OnDataRequest is of type Datasnap.Provider.TDataRequestEvent

See Also

• DataRequest

• IAppServer

• Communicating with Providers Using Custom Events

• Communicating with the Client Dataset

• Responding to Client-generated Events

• Datasnap.Provider.TDataRequestEvent