C#如何求两个List字典类型数据的交集

要求两个List中字典类型数据的交集，可以使用LINQ查询语句和Intersect方法来实现。以下是一个示例代码：

using System;using System.Collections.Generic;using System.Linq;class Program{static void Main(){List<Dictionary<string, string>> list1 = new List<Dictionary<string, string>>{new Dictionary<string, string> { { "key1", "value1" }, { "key2", "value2" } },new Dictionary<string, string> { { "key3", "value3" }, { "key4", "value4" } }};List<Dictionary<string, string>> list2 = new List<Dictionary<string, string>>{new Dictionary<string, string> { { "key1", "value1" }, { "key2", "value2" } },new Dictionary<string, string> { { "key5", "value5" }, { "key6", "value6" } }};var intersected = list1.Intersect(list2, new DictionaryComparer());foreach (var item in intersected){foreach (var pair in item){Console.WriteLine($"{pair.Key}: {pair.Value}");}}}class DictionaryComparer : IEqualityComparer<Dictionary<string, string>>{public bool Equals(Dictionary<string, string> x, Dictionary<string, string> y){if (x.Count != y.Count)return false;foreach (var pair in x){if (!y.ContainsKey(pair.Key) || y[pair.Key] != pair.Value)return false;}return true;}public int GetHashCode(Dictionary<string, string> obj){int hash = 17;foreach (var pair in obj){hash = hash * 23 + pair.Key.GetHashCode() + pair.Value.GetHashCode();}return hash;}}}

在上面的示例中，我们定义了一个DictionaryComparer类来实现IEqualityComparer接口，用于比较两个字典类型数据是否相等。然后我们使用Intersect方法来获取两个List中的交集数据，并输出结果。

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