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Anton Kuznetsov
Asked:2022-07-16 00:49:47 +0000 UTC2022-07-16 00:49:47 +0000 UTC

c#对嵌套列表进行排序，如何？

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有一个嵌套列表

public Dictionary<dynamic, Dictionary<string, dynamic>> Data = new();

以下数据被动态添加到其中：

Data .Add(ID, new Dictionary<string, dynamic> {
  { "Addr", Addr },
  { "Pos", Pos  },
  { "Description", Description },
  { "Number", Number  }
});

结果，我们得到一个近似列表：

Data["adx01"][{"Addr":5},{"Pos":100},{"Description":"Описание1"},{"Number":44}];
Data["vdx11"][{"Addr":2},{"Pos":45},{"Description":"Описание2"},{"Number":12}];
Data["ydx50"][{"Addr":3},{"Pos":67},{"Description":"Описание3"},{"Number":71}];
Data["zdx31"][{"Addr":10},{"Pos":9},{"Description":"Описание4"},{"Number":33}];

我需要按“数字”字段对其进行排序，使其看起来像这样：

Data["ydx50"][{"Addr":3},{"Pos":67},{"Description":"Описание3"},{"Number":71}];
Data["adx01"][{"Addr":5},{"Pos":100},{"Description":"Описание1"},{"Number":44}];
Data["zdx31"][{"Addr":10},{"Pos":9},{"Description":"Описание4"},{"Number":33}];
Data["vdx11"][{"Addr":2},{"Pos":45},{"Description":"Описание2"},{"Number":12}];

什么方法可以做到这一点？

答案：aepot：Data=Data.OrderBy(pair => (int)pair.Value["Number"]).ToDictionary(pair => pair.Key, pair => pair.Value)

c# сортировка

1 个回答

  1. Best Answer

    获取数据模型

    public class Item
{
    public long Addr { get; set; }
    public long Pos { get; set; }
    public string Description { get; set; }
    public long Number { get; set; }
}

    var items = new Dictionary<string, Item>();

items.Add(id, new Item
{
    Addr = Addr,
    Pos = Pos,
    Description = Description,
    Number = Number
});

    然后你可以这样排序

    var ordered = items.OrderBy(pair => pair.Value.Number);

    字典本身不能被视为有序数据结构，因此将ordered类型枚举器推IEnumerable<KeyValuePair<string, Item>>回字典是没有意义的。并为字典使用比较类型的强类型键。

    • 1

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