实体框架：用于显示数据子集的代理集合

发布于 2024-09-05 05:31:30 字数 669 浏览 2 评论 0原文

想象一下，我有一个名为 Product 的实体及其存储库：

public class Product
{
    public int Id { get; set; }
    public bool IsHidden { get; set; }
}

public class ProductRepository
{
    public ObservableCollection<Product> AllProducts { get; set; }
    public ObservableCollection<Product> HiddenProducts { get; set; }
}

所有产品都包含数据库中的每个产品，而 HiddenProducts 必须仅包含 IsHidden == true 的产品。我将类型编写为 ObservableCollection，但不一定是这样。

目标是让 HiddenProducts 集合像具有过滤功能的 AllProducts 的代理一样，并在每次产品的 IsHidden 属性出现时刷新它被改变了。

有正常的方法可以做到这一点吗？或者也许我的逻辑是错误的，这可能是更好的方法？

原文

Imagine I have an entity called Product and a repository for it:

public class Product
{
    public int Id { get; set; }
    public bool IsHidden { get; set; }
}

public class ProductRepository
{
    public ObservableCollection<Product> AllProducts { get; set; }
    public ObservableCollection<Product> HiddenProducts { get; set; }
}

All products contains every single Product in the database, while HiddenProducts must only contain those, whose IsHidden == true. I wrote the type as ObservableCollection<Product>, but it does not have to be that.

The goal is to have HiddenProducts collection be like a proxy to AllProducts with filtering capabilities and for it to refresh every time when IsHidden attribute of a Product is changed.

Is there a normal way to do this? Or maybe my logic is wrong and this could be done is a better way?

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