private void detach_Itms(Itm entity)
{
this.SendPropertyChanging();
entity.Ctnr = null;
}
private void attach_Itms(Itm entity)
{
this.SendPropertyChanging();
entity.Ctnr = this;
}
private void detach_Itms(Itm entity)
{
this.SendPropertyChanging();
entity.Ctnr = null;
}
private void attach_Itms(Itm entity)
{
this.SendPropertyChanging();
entity.Ctnr = this;
}