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。