private void button1_Click(object sender, EventArgs e)
        {
            if (Number.Text == "")
            {
                MessageBox.Show("员工编码不能为空!");
            }
            else if (Name1.Text == "")
            {
                MessageBox.Show("员工名称不能为空!");
            }

            else if (Phone.Text == "")
            {
                MessageBox.Show("手机号不能为空!");
            }
            else if (Encoding.Default.GetByteCount(Phone.Text) != 11)
            {
                MessageBox.Show("手机号长度不为11!");
            }

            else
            {
                string number = Number.Text;
                string name   = Name1.Text;
                string phone  = Phone.Text;

                model.employee r = new model.employee();

                employeeDaoz c = new employeeDaoz();
                c.addEmployee(number, name, phone);
                Console.Write(c.kehu + "!!");
                if (c.kehu == 0)
                {
                }
                else
                {
                    int node = k.dataGridView1.Rows.Count;
                    k.dt.Rows.Add(node + 1, number, name, phone);
                    k.dataGridView1.DataSource = k.dt;
                    this.Close();
                }
            }
        }