private void button2_Click(object sender, EventArgs e)
        {
            var drawingForn = new IncumbentForm();

            drawingForn.Show();
            Close();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            var work_p    = Convert.ToInt32(comboBox1.SelectedValue.ToString());
            var workplace = Convert.ToInt32(comboBox3.SelectedValue.ToString());

            dataBase.incumbentins(textBox3.Text, textBox2.Text, textBox1.Text, dateTimePicker1.Value,
                                  dateTimePicker2.Value, work_p, workplace);
            var drawingForn = new IncumbentForm();

            drawingForn.Show();
            Close();
        }