private void VIPPrasadamForm_Load(object sender, EventArgs e)
{
var empDao = new EmployeeDao();
cmbReferenceBy.DataSource = empDao.GetAllEmployees();
cmbReferenceBy.DisplayMember = "Name";
cmbReferenceBy.ValueMember = "Id";
var serviceDao = new ServiceDao();
cmbServiceID.DataSource = serviceDao.GetAllVIPPrasadam();
ShowVIPPrasadam();
}