Question

我想知道是否有更好的方法来设计类似的数据结构。

object --> list of objects --> list of lists

代码示例如下：

class Customer
{
    public string Name {get; set;}
    public string LastName {get; set;}
}

class Customers
{
    public List<Customer> {get; set}
}

class MultipleLists_Customers
{
    public List<Customers> {get; set;}
}

Answer 1

设计是关于代表一个问题域，所以你的设计可能是好的还是坏的，这取决于问题是什么....重命名一些东西，它可能对像

这样的东西非常有效

class Customer
{
public string Name {get;set;}
public string LastName {get; set;}
}

class Vendor
{
     public string Name {get; set;}
     public List<Customer> Customers {get;set}
}

class Organization
{
     public string Name {get; set;}
     public List<Vendor> Vendors {get;set;}
}

Answer 2

正如Keith所说，重命名是一个良好的开端。

如果您真正想要的只是一个表示对象列表列表的对象，您可以通过简单地嵌套泛型来实现它而无需创建新的数据结构：

public List<List<Customer>> CustomerLists;

那就是说，您似乎正在尝试为订购系统建模。这样的事情可以解决问题：

class Customer
{
    public Customer(string firstName, string lastName)
    {
        FirstName = firstName;
        LastName = lastName;
    }

    public string FirstName { get; }
    public string LastName { get; }
}

class Vendor
{
    public Vendor(string name, IEnumerable<Product> products)
    {
        Name = name;
        Products = new HashSet<Product>(products);
    }

    public bool HasStock(Product product, double quantity)
    {
        // determine if product is currently in stock...
    }

    public string Name { get; }
    public HashSet<Product> Products { get; }
}

class Product
{
    // ... common product data.
}

class Order
{
    public Order(
        DateTime createDate, Customer customer, 
        Vendor vendor, Product product, double quantity)
    {
        CreateDate = createDate;
        Customer = customer;
        Vendor = vendor;
        Product = product;
        Quantity = quantity;
    }

    public DateTime CreateDate { get; }
    public Customer Customer { get; }
    public Vendor Vendor { get; }
    public Product Product { get; }
    public double Quantity { get; }
}

Answer 3

最基本的方法是：

class Customer
{
    public string Name {get; set;}
    public string LastName {get; set;}
}

class MultipleLists_Customers
{
    public List<Customer> Customers {get; set;}
}

数据结构C＃的列表替代解决方案列表

3 个答案: