获取具有特定条件的两个列表的交叉

3 回答

• 3

  完全未经测试，但这样的事情怎么样？

  var result = from c1 in List1
               join c2 in List2 on c1.Name equals c2.Name
               select new CarInfo()
               {
                   Name = c1.Name, // Doesn't really matter which you take
                   Year = c1.Price < c2.Price ? c1.Year : c2.Year,
                   Price = c1.Price < c2.Price ? c1.Price : c2.Price
               };
  

  回复于 2024-04-18T21:58:36+08:00
• 1

  像这样的东西？我假设您有Intersect的CarComparer IEquality位 .

  var cheapCars = list1.Intersect(list2, new CarComparer()).
      OrderBy(c => c.Price).
          GroupBy(c => c.Name).
              Select(g => g.FirstOrDefault());
  

  您可能需要修复语法...

  回复于 2024-04-18T21:58:36+08:00
• 0

  以下查询将匹配 Brand 和 Year 属性上的汽车 . 如果您只关心 Brand ，则可以更改连接条件以满足该目的 .

  var results = from car1 in list1
                join car2 in list2 
                  on new { car1.Brand, car1.Year } 
                  equals new { car2.Brand, car2.Year }
                select (car1.Price <= car2.Price) ? car1 : car2;
  

  回复于 2024-04-18T21:58:36+08:00