RAD Studio VCL Reference
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TCustomProvider.DoBeforeRowRequest Method
TCustomProvider Class | TCustomProvider Members | Provider Namespace | Description | See Also
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Generates a BeforeRowRequest event.

Pascal
procedure DoBeforeRowRequest(var OwnerData: OleVariant); virtual;
C++
virtual __fastcall DoBeforeRowRequest(OleVariant OwnerData);
Description

The RowRequest method calls DoBeforeRowRequest to generate the BeforeRowRequest event before fetching the requested data. 

OwnerData supplies custom information to the BeforeRowRequest event handler. The event handler can change this value. The returned value is then passed to an AfterRowRequest event handler and then returned to the caller of the RowRequest method. 

 

See Also
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