Datagrid selection changed for image?

Question

Problem is selection cahnged for images in datagrid...

 

private void roba_uslugeDataGridView_SelectionChanged(object sender, EventArgs e)
        {
            if (roba_uslugeDataGridView.SelectedRows.Count > 0)
            {

                string id = roba_uslugeDataGridView.SelectedRows[0].Cells[0].Value.ToString();
                string sifra = roba_uslugeDataGridView.SelectedRows[0].Cells[1].Value.ToString();
                string naziv = roba_uslugeDataGridView.SelectedRows[0].Cells[2].Value.ToString();
                dataPictureBox.Image = null;
                idTextBox.Text = id;
                sifraTextBox.Text = sifra;
                imeTextBox.Text = naziv;

                byte[] img_arr = null;
                MemoryStream ms = new MemoryStream();
                dataPictureBox.Image.Save(ms, dataPictureBox.Image.RawFormat);
                img_arr = ms.GetBuffer();
            }
        }