protected virtual bool Set <T>(ref T field, T value, [CallerMemberName] string?automaticPropertyName = null)
{
if (EqualityComparer <T> .Default.Equals(field, value))
{
return(false);
}
PropertyInfo?pi = GetPropertyInfo(automaticPropertyName !);
if (pi == null)
{
throw new ArgumentException("No PropertyInfo with name {0} found in {1} or any implemented interface".FormatWith(automaticPropertyName, this.GetType().TypeName()));
}
if (value is IMListPrivate && !((IMListPrivate)value).IsNew && !object.ReferenceEquals(value, field))
{
throw new InvalidOperationException("Only MList<T> with IsNew = true can be assigned to an entity");
}
if (field is INotifyCollectionChanged colb)
{
if (AttributeManager <NotifyCollectionChangedAttribute> .FieldContainsAttribute(GetType(), pi))
{
colb.CollectionChanged -= ChildCollectionChanged;
}
if (AttributeManager <NotifyChildPropertyAttribute> .FieldContainsAttribute(GetType(), pi))
{
foreach (var item in (IEnumerable <IModifiableEntity>)colb !)
{
((ModifiableEntity)item).ClearParentEntity(this);
}
}
}
if (field is ModifiableEntity modb)
{
if (AttributeManager <NotifyChildPropertyAttribute> .FieldContainsAttribute(GetType(), pi))
{
modb.ClearParentEntity(this);
}
}
SetSelfModified();
field = value;
if (field is INotifyCollectionChanged cola)
{
if (AttributeManager <NotifyCollectionChangedAttribute> .FieldContainsAttribute(GetType(), pi))
{
cola.CollectionChanged += ChildCollectionChanged;
}
if (AttributeManager <NotifyChildPropertyAttribute> .FieldContainsAttribute(GetType(), pi))
{
foreach (var item in (IEnumerable <IModifiableEntity>)cola !)
{
((ModifiableEntity)item).SetParentEntity(this);
}
}
}
if (field is ModifiableEntity moda)
{
if (AttributeManager <NotifyChildPropertyAttribute> .FieldContainsAttribute(GetType(), pi))
{
moda.SetParentEntity(this);
}
}
NotifyPrivate(pi.Name);
NotifyPrivate("Error");
NotifyToString();
ClearTemporalError(pi.Name);
return(true);
}