private void button3_Click(object sender, EventArgs e)
        {
            if (textBox1.Text != "")
            {
                using (var db = new Corporation())
                {
                    db.Persons.Add(new Person()
                    {
                        EmployeeFullName = textBox1.Text.Trim(),
                        CellPhone = textBox2.Text.Trim(),
                        EmployeeMaried = false,
                        EmployeeBirth = DateTime.Now,
                        IdentityNumber = "0"

                    });
                    db.SaveChanges();
                    this.Dispose();
                }
            }
            else
            {
                textBox1.Focus();
            }
        }
 private void GetData()
 {
     Corporation db = new Corporation();
     ListstorageItem = db.StorageItems.AsNoTracking().Include("Storage").ToList();
     Listtype = db.TypeStorages.ToList();
 }