partial void DeletecityName(cityName instance);
partial void UpdatecityName(cityName instance);
private void detach_cityName(cityName entity)
{
this.SendPropertyChanging();
entity.language = null;
}
partial void InsertcityName(cityName instance);
private void attach_cityName(cityName entity)
{
this.SendPropertyChanging();
entity.language = this;
}