public PrincipaleForm()
        {
            Application.Exit();

            InitializeComponent();

            tlabelAlphaAvertVersion.Text      = "Vous possédez une version Beta du programme (0.1.1)";
            tlabelAlphaAvertVersion.ForeColor = Color.Orange;

            BienvenueForm MyForm = new BienvenueForm();

            MyForm.TopLevel        = false;
            MyForm.FormBorderStyle = FormBorderStyle.None;
            MyForm.Parent          = panel1;
            MyForm.Top             = 0;
            MyForm.Left            = 0;
            MyForm.Size            = panel1.ClientSize;
            MyForm.Dock            = DockStyle.Fill;
            MyForm.BringToFront();
            MyForm.Show();

            try
            {
                connexion.Open();
                toolStripStatusLabel1.Text      = "Connecté";
                toolStripStatusLabel1.ForeColor = Color.Green;
            }
            catch
            {
                toolStripStatusLabel1.Text      = "Non connecté";
                toolStripStatusLabel1.ForeColor = Color.Red;
            }
        }
        //Click sur le bouton de fermeture de projet

        private void button4_Click(object sender, EventArgs e)
        {
            BienvenueForm MyForm = new BienvenueForm();

            MyForm.TopLevel        = false;
            MyForm.FormBorderStyle = FormBorderStyle.None;
            MyForm.Parent          = panel1;
            MyForm.Top             = 0;
            MyForm.Left            = 0;
            MyForm.Size            = panel1.ClientSize;
            MyForm.Dock            = DockStyle.Fill;
            MyForm.BringToFront();
            MyForm.Show();
        }