FireDAC.Comp.DataSet.TFDDataSet.FetchBlobs
| [–] Properties | |
|---|---|
| Type: procedure function
| |
| Visibility: public | |
| Source: FireDAC.Comp.DataSet.pas FireDAC.Comp.DataSet.hpp
| |
| Unit: FireDAC.Comp.DataSet | |
| Parent: TFDDataSet | |
Delphi
procedure FetchBlobs;
C++
void __fastcall FetchBlobs();
Description
Retrieves BLOB field values from database for the current record.
Call FetchBlobs to retrieve BLOB field values from a database for the current dataset record, when these values are not provided automatically. BLOB field values are automatically fetched together with other record fields, if fiBlobs is included into FetchOptions.Items, otherwise the automatic fetch operation is not performed.
Example
FDQuery1.FetchOptions.Items := FDQuery1.FetchOptions.Items - [fiBlobs];
FDQuery1.Open;
....
FDQuery1.FetchBlobs;
oStr := FDQuery1.CreateBlobStream(FDQuery1.FieldByName('image'), bmRead);
try
// process image
finally
oStr.Free;
end;