.net - WPF ComboBox 的自定义相等比较器

Question

当我们将组合框的 SelectedItem 绑定到一个属性时，通常它会使用对象类型的 Equals 方法来确定应该在 ComboBox 视图中显示的选定项。（例如，请参阅此问题）

是否可以为此拥有自己的比较器，而无需修改类的 equals 方法？我不想直接修改方法的原因是因为该类也用于业务逻辑，我不希望我的相等比较器影响使用同一类的其他东西

Answer 1

The reason I don't want to modify the method directly is because the class is also used for business logic and I don't want my equality comparer to affect other things that use the same class

This usually indicates a wrapper that is needed:

public class Wrapper<T>
{
    public override string ToString() { ... }

    public override bool Equals(object obj) { ... }

    public T UnderlyingRecord { get; set; }
}

This way you can carry on as normal and only the view will use the wrapper object.