public ContactExtra GetExtraValue(string field)
{
var ev = ContactExtras.AsEnumerable().FirstOrDefault(ee => ee.Field.Equal(field));
if (ev == null)
{
ev = new ContactExtra()
{
ContactId = ContactId,
Field = field,
};
ContactExtras.Add(ev);
}
return(ev);
}
private void detach_ContactExtras(ContactExtra entity)
{
this.SendPropertyChanging();
entity.Contact = null;
}
private void attach_ContactExtras(ContactExtra entity)
{
this.SendPropertyChanging();
entity.Contact = this;
}