private void zapiszToolStripMenuItem_Click(object sender, EventArgs e)
        {
            try
            {
                SaveFileDialog saveFileDialog = new SaveFileDialog();
                saveFileDialog.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif";

                if (saveFileDialog.ShowDialog() != System.Windows.Forms.DialogResult.OK) MessageBox.Show("Podana ścieżka nie istnieje", "Powiadomienie");



                if (saveFileDialog.FileName != "")
                {

                    System.IO.FileStream fs =
                       (System.IO.FileStream)saveFileDialog.OpenFile();



                    switch (saveFileDialog.FilterIndex)
                    {
                        case 1:

                            pictureBox2.Image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
                            break;

                        case 2:

                            pictureBox2.Image.Save(fs, System.Drawing.Imaging.ImageFormat.Bmp);
                            break;

                        case 3:

                            pictureBox2.Image.Save(fs, System.Drawing.Imaging.ImageFormat.Gif);
                            break;
                    }

                    fs.Close();
                }
            }
            catch
            {
                MessageBox.Show("Nie można zapisać pliku", "Powiadomienie");
            }
        }