EF Core 6 Many to many table after scaffold - .net-core

Question

I've made a dotnet ef scaffold from database and the classes generated were:
public partial class Course
{
public int Id { get; set; }
public string? Description { get; set; }
}
public partial class Student
{
public int Id { get; set; }
public string? Name { get; set; }
}
public partial class StudentCourse
{
public int? IdStudent { get; set; }
public int? IdCourse { get; set; }
public virtual Student? IdStudentNavigation { get; set; }
public virtual Course? IdCourseNavigation { get; set; }
}
I want to get a List of Student where id of Course is X
I've tried _context.Student.Include("StudentCourse").Where(x=>x.Any(....) but Intellisense does not accept "Any" function.
How can i get this ?

Answer 1

Any(...) is a method provided by Enumerable class so you can not use it on a single Student (which is obviously not an Enumerable object).
Your configuration of many-to-many relationship is maybe missing some lines, here is my suggestion:
public partial class Course
{
public int Id { get; set; }
public string? Description { get; set; }
public List<StudentCourse> StudentCourses { get; set; }
}
public partial class Student
{
public int Id { get; set; }
public string? Name { get; set; }
public List<StudentCourse> StudentCourses { get; set; }
}
public partial class StudentCourse
{
public int? IdStudent { get; set; }
public int? IdCourse { get; set; }
public virtual Student? StudentNavigation { get; set; }
public virtual Course? CourseNavigation { get; set; }
}
In Context file:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<StudentCourse>()
.HasOne(sc => sc.StudentNavigation)
.WithMany(s => s.StudentCourses)
.HasForeignKey(sc => sc.IdStudent);
modelBuilder.Entity<StudentCourse>()
.HasOne(sc => sc.CourseNavigation)
.WithMany(c => c.StudentCourses)
.HasForeignKey(sc => sc.IdCourse);
}
Finally, your query could be:
IEnumerable<Student> students = await _context.Students
.Include(s => s.StudentCourses)
.Where(s => s.StudentCourses.Any(sc => sc.IdCourse == X)))

Answer 2

I am just taking your code as example but this is not a way you design entity in EF core.
Try following though.
var students
=_context.StudentCourse.Include("IdStudentNavigation").Where(x=>x.IdCourse == 1).Select(x => x.IdStudentNavigation).ToList();
Replace one with your course id.