CODEWITHSUNDEEP
imagedelphibitmapblobfirebird
stacker
stacker

Reputation: 613

Load and save image from blob field in delphi using firebird

In my Firebird database I have a Blob field that contain a Bitmap. I'll have to load and display in a TImage located on my Form. Subsequently I'll have to save in the same field the image selected by a OpenDialog.

Upvotes: 6

Views: 27609

Answers (1)

bummi
bummi

Reputation: 27367

Procedure LoadBitmapFromBlob(Bitmap: TBitmap; Blob: TBlobField);
var
  ms, ms2: TMemoryStream;
begin
  ms := TMemoryStream.Create;
  try
    Blob.SaveToStream(ms);
    ms.Position := 0;
    Bitmap.LoadFromStream(ms);
  finally
    ms.Free;
  end;
end;

example usage 

procedure TForm4.Button1Click(Sender: TObject);
var
  bmp: TBitmap;
begin
  bmp := TBitmap.Create;
  try
    LoadBitmapFromBlob(bmp, TBlobField(Dataset.FieldByName('Image')));
    Image1.Picture.Assign(bmp);
    bmp.SaveToFile(OpenDialog.FileName);
  finally
    bmp.Free;
  end;

end;

Upvotes: 14

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