使用Linq从列表中选择列表中包含

Question

我有语法麻烦。

public class Student 
{ 
    int StudentId; 
    string Name; 
} 

public class Course 
{ 
    int CourseId; 
    List<Student> Students; 
} 


int[] studentIds = { 5, 7, 12 }; 
List<Course> allCourses = myDataContext.Courses.ToList(); 

使用lambda表达式或查询表达式，如何获取包含数组studentIds在任何学生的所有课程的过滤列表？

Answer 1

var result = from course in allCourses 
      where course.Students.Any(x => studentIds.Contains(x.StudentId)) 
      select course;