private void chargerUneCampagneToolStripMenuItem_Click(object sender, EventArgs e)
        {
            OpenFileDialog openXML = new OpenFileDialog();

            openXML.Filter = "Fichier XML (*.xml)|*.xml";
            if (openXML.ShowDialog() == DialogResult.OK)
            {
                data = dataDAO.loadData(openXML.FileName);
                UpdateFields();
                sauvegarderToolStripMenuItem.Enabled     = true;
                sauvegarderSousToolStripMenuItem.Enabled = true;
                envoisToolStripMenuItem.Enabled          = true;
            }
        }