/// <summary>
/// Delete Service Type by id
/// </summary>
public void DeleteServiceType(long serviceTypeId)
{
ServiceType dbversion = serviceTypeRepository.Find((int)serviceTypeId);
ValidateBeforeDeletion(serviceTypeId);
if (dbversion == null)
{
throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture,
"Service Type with Id {0} not found!", serviceTypeId));
}
serviceTypeRepository.Delete(dbversion);
serviceTypeRepository.SaveChanges();
}