C# : How to sort a list of object based on a list of string

Question

我有两个类似的列表

 List<String> l_lstNames = new List<String> { "A1", "A3", "A2", "A4", "A0" };

List<Test> l_lstStudents = new List<Test> 
                            { new Test { Age = 20, Name = "A0" }, 
                              new Test { Age = 21, Name = "A1" }, 
                              new Test { Age = 22, Name = "A2" }, 
                              new Test { Age = 23, Name = "A3" }, 
                              new Test { Age = 24, Name = "A4" }, 
                            };

Test 是类

 public class Test
    {
        public String Name;
        public Int32 Age;
    }

我需要根据 l_lstNames 对 l_lstStudents 中的项目进行排序。所以排序后的列表就像，

List<Test> l_lstStudents = new List<Test> 
                        {  new Test { Age = 21, Name = "A1" }, 
                           new Test { Age = 23, Name = "A3" }, 
                           new Test { Age = 22, Name = "A2" }, 
                           new Test { Age = 24, Name = "A4" }, 
                           new Test { Age = 20, Name = "A0" }, 
                        };

现在我正在使用 for 来执行此操作。

喜欢

1. 创建一个新的 Test 对象列表。

2. 迭代 l_lstNames 的循环并从 l_lstStudent 中获取 Test 对象并将其添加到新创建的列表中。最后将新列表分配给 l_lstStudent

请帮助我以简单的方式(Linq 或 Lambda)做到这一点

Answer 1

试试这个:

l_lstStudents = l_lstStudents.OrderBy(s => l_lstNames.IndexOf(s.Name)).ToList()

我认为这表达了非常明确的意图。