public void CreateDataEQuipment()
        {
            EQuipment eq1 = new EQuipment("0001", "Drag", "2500", "Cut", "15/3/2020");
            EQuipment eq2 = new EQuipment("0002", "Hammer", "110", "Medical", "18/12/2019");
            EQuipment eq3 = new EQuipment("0003", "Pliers", "287", "Tools", "30/02/2020");
            EQuipment eq4 = new EQuipment("0004", "Knife", "342", "Tools", "12/01/2020");
            EQuipment eq5 = new EQuipment("0005", "Syringe", "1135", "Medical", "16/05/2020");

            ListeQuipment.Add(eq1);
            ListeQuipment.Add(eq2);
            ListeQuipment.Add(eq3);
            ListeQuipment.Add(eq4);
            ListeQuipment.Add(eq5);
        }
        private void button4_Click(object sender, EventArgs e)
        {
            AddEQuipment formAddEquipment = new AddEQuipment("Add");

            formAddEquipment.ShowDialog();
            if (AddEQuipment.eQuipment != null)
            {
                EQuipment d5 = new EQuipment(AddEQuipment.eQuipment);


                if (string.IsNullOrEmpty(d5.ID.ToString()) || string.IsNullOrEmpty(d5.Name.ToString()) || string.IsNullOrEmpty(d5.Unit.ToString()) || string.IsNullOrEmpty(d5.Kind.ToString()) || string.IsNullOrEmpty(d5.DateOfManufacture.ToString()))
                {
                }
                else
                {
                    ListeQuipment.Add(d5);
                    MessageBox.Show("Add successful");
                    LoadEQuipment1();
                }
            }
        }