Relation to the Country Class in the Travel Class
Now the Travel class needs a reference to the Country class and a property for public access:
[NDORelation]
List<Country> countries = new List<Country>();
public void AddCountry(Country l)
{
countries.Add(l);
}
public void RemoveCountry(Country l)
{
countries.Remove(l);
}
public IEnumerable<Country> Countries
{
get { return countries; }
set { countries = value.ToList(); }
}
Again, this is not a composite relation.
Don’t forget to adapt the database with the SQL script after rebuilding the assemblies.