/// <summary>
/// List .Join(
/// List to join with (filtered in this case),
/// Match Property GroupNumber in Student objects
/// with Property GroupNumber in Group objects
/// Return new anonymous type or student in this case
/// </summary>
/// <param name="list"></param>
/// <param name="groups"></param>
/// <param name="department"></param>
/// <returns></returns>
public static List <Student> GetStudentsByDepartment
(this List <Student> list, List <Group> groups, DepartmentsType department)
{
var output = list.Join(
groups.Where(group => group.DepartmentName == DepartmentsType.Mathematics).ToList(),
student => student.GroupNumber,
group => group.GroupNumber,
(student, group) => student)
.ToList();
return(output);
}
public Group(int number, DepartmentsType department)
{
this.GroupNumber = number;
this.DepartmentName = department;
}
public Group(int number, DepartmentsType department)
{
this.GroupNumber = number;
this.DepartmentName = department;
}
