Сохранение и чтение файлов в BLOB-полях




// Сохраняем
procedure TForm1.Button1Click(Sender: TObject);
var
blob: TBlobStream;
begin
blob := yourDataset.CreateBlobStream(yourDataset.FieldByName('YOUR_BLOB'), bmWrite);
try
blob.Seek(0, soFromBeginning);
fs := TFileStream.Create('c:\your_name.doc', fmOpenRead or
fmShareDenyWrite);
try
blob.CopyFrom(fs, fs.Size)
finally
fs.Free
end;
finally
blob.Free
end;
end;
// Загружаем
procedure TForm1.Button1Click(Sender: TObject);
var
blob: TBlobStream;
begin
blob := yourDataset.CreateBlobStream(yourDataset.FieldByName('YOUR_BLOB'), bmRead);
try
blob.Seek(0, soFromBeginning);
with TFileStream.Create('c:\your_name.doc', fmCreate) do
try
CopyFrom(blob, blob.Size)
finally
Free
end;
finally
blob.Free
end;
end;


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