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以下のようなクラス階層があり、NHibernate を介して DB からデータをロードします。オートマッピングを使用しています。

public class Unit
{
    public virtual int Id { get; set; }
    public virtual string Name { get; set; }
}
public class Value
{
    public virtual int Id { get; set; }
    public virtual double Quantity { get; private set; }
}
public class DirectQuantity : Value
{
}
public class DependentQuantity : Value
{
    private double _getValue()
    {
        throw new NotImplementedException();
    }
    public override double Quantity
    {
        get
        {
            return _getValue();
        }
    }
}
public class MainCategory
{
    public virtual int Id { get; set; }
    public virtual string Name { get; set; }
    public virtual string Notes { get; set; }
}
public class ItemTemplate
{
    public virtual int Id { get; set; }
    public virtual string Description { get; set; }
    public virtual Unit Unit { get; set; }
    public virtual MainCategory Category { get; set; }
    public virtual List<ItemTemplate> Children { get; set; }
}
public class Item
{
    public virtual int Id { get; set; }
    public virtual string Note { get; set; }
    public virtual Value Quantity { get; set; }
    public virtual ItemTemplate Template { get; set; }
    public virtual List<Item> Children { get; set; }
}
public class BSR
{
    public virtual int Id { get; set; }
    public virtual string Description { get; set; }
    public virtual List<MainCategory> Categories { get; set; }
}

私はDTOを次のように書きました：

public class UnitDto : INotifyPropertyChanged
{
    public int Id { get; set; }

    private string _name;
    public string Name
    {
        get { return _name; }
        set 
        { 
            _name = value;
            PropertyChanged(this, new PropertyChangedEventArgs("Name"));
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;
}
public class ValueDto : INotifyPropertyChanged
{
    public int Id { get; set; }
    public double Quantity
    {
        get { return _Quantity; }
        set
        {
            if (_Quantity != value)
            {
                _Quantity = value;
                OnPropertyChanged(QuantityPropertyName);
            }
        }
    }

    private void OnPropertyChanged(string PropertyName)
    {
        PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
        //throw new NotImplementedException();
    }
    private double _Quantity;
    public const string QuantityPropertyName = "Quantity";

    public event PropertyChangedEventHandler PropertyChanged;
}
public class DirectQuantityDto : ValueDto
{
}
public class DependentQuantityDto : ValueDto
{
}
public class MainCategoryDto : INotifyPropertyChanged
{
    public int Id { get; set; }
    public string Name
    {
        get { return _Name; }
        set
        {
            if (_Name != value)
            {
                _Name = value;
                OnPropertyChanged(NamePropertyName);
            }
        }
    }

    private string _Name;
    public const string NamePropertyName = "Name";


    public string Notes
    {
        get { return _Notes; }
        set
        {
            if (_Notes != value)
            {
                _Notes = value;
                OnPropertyChanged(NotesPropertyName);
            }
        }
    }
    private string _Notes;
    public const string NotesPropertyName = "Notes";
    public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string PropertyName)
    {
        PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
        //throw new NotImplementedException();
    }
}
public class ItemTemplateDto :INotifyPropertyChanged
{
    public int Id { get; set; }

    public string Description
    {
        get { return _Description; }
        set
        {
            if (_Description != value)
            {
                _Description = value;
                OnPropertyChanged(DescriptionPropertyName);
            }
        }
    }
    private string _Description;
    public const string DescriptionPropertyName = "Description";

    public int? UnitID
    {
        get { return _UnitID; }
        set
        {
            if (_UnitID != value)
            {
                _UnitID = value;
                OnPropertyChanged(UnitIDPropertyName);
            }
        }
    }
    private int? _UnitID;
    public const string UnitIDPropertyName = "UnitID";

    public int? MainCategoryId
    {
        get { return _MainCategoryId; }
        set
        {
            if (_MainCategoryId != value)
            {
                _MainCategoryId = value;
                OnPropertyChanged(MainCategoryIdPropertyName);
            }
        }
    }
    private int? _MainCategoryId;
    public const string MainCategoryIdPropertyName = "MainCategoryId";

    public ObservableCollection<int> ChildItemIds { get; set; }

    private void OnPropertyChanged(string PropertyName)
    {
        PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
        //throw new NotImplementedException();
    }

    public event PropertyChangedEventHandler PropertyChanged;
}
public class ItemDto : INotifyPropertyChanged
{
    public virtual int Id { get; set; }
    public string Note
    {
        get { return _Note; }
        set
        {
            if (_Note != value)
            {
                _Note = value;
                OnPropertyChanged(NotePropertyName);
            }
        }
    }
    private string _Note;
    public const string NotePropertyName = "Note";

    public int? QuantityId
    {
        get { return _QuantityId; }
        set
        {
            if (_QuantityId != value)
            {
                _QuantityId = value;
                OnPropertyChanged(QuantityIdPropertyName);
            }
        }
    }
    private int? _QuantityId;
    public const string QuantityIdPropertyName = "QuantityId";

    public int? ItemTemplateId
    {
        get { return _ItemTemplateId; }
        set
        {
            if (_ItemTemplateId != value)
            {
                _ItemTemplateId = value;
                OnPropertyChanged(ItemTemplateIdPropertyName);
            }
        }
    }
    private int? _ItemTemplateId;
    public const string ItemTemplateIdPropertyName = "ItemTemplateId";

    public ObservableCollection<int> ChildItemIds { get; set; }

    //public virtual string Note { get; set; }
    //public virtual ValueDto Quantity { get; set; }
    //public virtual ItemTemplateDto Template { get; set; }
    //public virtual List<ItemDto> Children { get; set; }

    private void OnPropertyChanged(string PropertyName)
    {
        PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
        //throw new NotImplementedException();
    }

    public event PropertyChangedEventHandler PropertyChanged;
}
public class BSRDto : INotifyPropertyChanged
{
    public int Id { get; set; }
    public string Name
    {
        get { return _Name; }
        set
        {
            if (_Name != value)
            {
                _Name = value;
                OnPropertyChanged(NamePropertyName);
            }
        }
    }
    private string _Name;
    public const string NamePropertyName = "Name";

    public string Description
    {
        get { return _Description; }
        set
        {
            if (_Description != value)
            {
                _Description = value;
                OnPropertyChanged(DescriptionPropertyName);
            }
        }
    }
    private string _Description;
    public const string DescriptionPropertyName = "Description";

    public ObservableCollection<int> CategoryIds { get; set; }

    public List<MainCategoryDto> Categories { get; set; }

    private void OnPropertyChanged(string PropertyName)
    {
        PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
        //throw new NotImplementedException();
    }

    public event PropertyChangedEventHandler PropertyChanged;
}

私の問題は、ID でそれらのオブジェクトを参照せずに、UI でオブジェクトの関係を表示するにはどうすればよいですか? 私はそれを行う方法を考えることができますが、それには多くのコーディングが必要になると思います. たとえば、UI で を に割り当て、複数のItemTemplateDtoを子として に割り当てることができる必要があります。人々がこれについて行く標準的な方法はありますか？ItemDtoItemDtoItemDto

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1 に答える 1

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どういうわけかオブジェクトを転送する必要がない場合は、エンティティを直接使用しないのはなぜですか？

エンティティにINPCを自動的に実装するには、ここhttp://msdn.microsoft.com/en-us/magazine/ee819139.aspxのDatabindingfactoryを参照してください。

子アイテムをアイテムに割り当てるために、ある種のツリーを表示し、あるアイテムを別のアイテムの下にドラッグアンドドロップできるようにします。これにより、あるアイテムオブジェクトが別のアイテムの子コレクションに効果的に追加されます。

于 2012-05-18T11:23:39.120 に答える