private void selectEmployeeComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            EmployeeManager anEmployeeManager = new EmployeeManager();
            Employee anEmployee = new Employee();
            anEmployee.Email = anEmployeeManager.Get((int)selectEmployeeComboBox.SelectedValue).Email;
            anEmployee.Contact = anEmployeeManager.Get((int)selectEmployeeComboBox.SelectedValue).Contact;
            emailTextBox.Text = anEmployee.Email;
            contactTextBox.Text = anEmployee.Contact;

            employeeId = (int)selectEmployeeComboBox.SelectedValue;
        }
 private void saveButton_Click(object sender, System.EventArgs e)
 {
     Employee anEmployee = new Employee();
     anEmployee.Name = nameTextBox.Text;
     anEmployee.Email = emailTextBox.Text;
     anEmployee.Contact = contactTextBox.Text;
     anEmployee.JoiningDate = joiningDateDateTimePicker.Value;
     anEmployee.DepartmentId = (int) departmentComboBox.SelectedValue;
     EmployeeManager anEmployeeManager = new EmployeeManager();
     string msg = anEmployeeManager.Save(anEmployee);
     MessageBox.Show(msg);
 }
        private void selectDeptComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            EmployeeManager anEmployeeManager = new EmployeeManager();

            dataGridView1.DataSource = anEmployeeManager.GetAllByDepartment((int)selectDeptComboBox.SelectedValue);
        }