c# - 类定义自定义排序顺序

Question

我有很多简单的类需要排序。示例:

IEnumerable<Sortsample> OutputList = List.OrderBy(x => x);

所有的类只需要像这样按定义的属性排序:

class Sortsample
{     
    [SortAttribute] //Item should be sorted by Date
    public DateTime Date { get; set; }
    public string Name { get; set; }
}

是否有类似 [SortAttribute] 的东西(或类似的简单方法)，或者我是否必须为每个类实现 CompareTo？

Answer 1

我建议实现 IComparable<Sortsample> :

  class Sortsample: IComparable<Sortsample> {
    public DateTime Date {
      get; set;
    }
    public string Name {
      get; set;
    }

    public int CompareTo(Sortsample other) {
      // if "other" is, in fact, "this" 
      if (Object.ReferenceEquals(this, other))
        return 0;
      else if (Object.ReferenceEquals(null, other)) 
        return 1; // let's consider that "this" (not null) > null

      // other is not this, and other is not null
      return Date.CompareTo(other.Date);
    }
  }