c# - 从类型类列表中删除重复项

Question

我有一个具有以下属性的类

id(类型:唯一的long)，name(类型:string)，主要版本(VM)(类型:long)，次要版本(Vm)(类型:long)

我创建了此类的列表，该列表如下所示

ID    Name     VM    Vm
1     ssim     2     1
2     SSim     3     1
3     Counter  5     1
4     Counter  6     2
5     Counter  6     5

我想根据主要版本和次要版本从列表中删除重复项。最终列表应如下所示

ID    Name     VM    Vm
2     SSim     3     1
5     Counter  6     5

Answer 1

我认为是这样的:

public class Product
{
    public Product(long id, string name, int major, int minor)
    {
        this.Id = id;
        this.Name = name;
        this.Major = major;
        this.Minor = minor;
    }

    public long Id { get; set; }

    public int Major { get; set; }

    public int Minor { get; set; }

    public string Name { get; set; }
}

private static void Main()
{
    IEnumerable<Product> products = new List<Product>
                                    {
                                        new Product(1, "ssim", 2, 1),
                                        new Product(2, "SSim", 3, 1),
                                        new Product(3, "Counter", 5, 1),
                                        new Product(4, "Counter", 6, 2),
                                        new Product(5, "Counter", 6, 5)
                                    };

    IEnumerable<Product> distinctProducts =
        (from x in products group x by x.Name.ToLower() into g select g.OrderByDescending(y => y.Major).ThenByDescending(y => y.Minor).First()).OrderBy(x => x.Name).ToList();
}