Populating a nest list in class

[Solarion]

I've actually never done this before, populating a sub list in a class. I'm getting a weird error and I have no idea how to resolve. Please what I must do, any suggestions?

    public class Student
    {
        public string StudentNo { get; set; }
        public string Name { get; set; }
        public string Surname { get; set; }
        public char Gender { get; set; }
        public DateTime Dob { get; set; }
        public List<Marks> marksList { get; set; }

    }

    public class Marks
    {
        public string StudentNo { get; set; }
        public string SubjectName { get; set; }
        public string SubjectMark { get; set; }
    }

            List<Student> students = new List<Student>
            {
                 new Student(){StudentNo = "1", Name="Johnny",Surname="Walker",Gender='M', Dob=Convert.ToDateTime("2008-12-01"), marksList = new List<Marks> { marks } },
            };

 

[_kabal_]

I've actually never done this before, populating a sub list in a class. I'm getting a weird error and I have no idea how to resolve. Please what I must do, any suggestions?

    public class Student
    {
        public string StudentNo { get; set; }
        public string Name { get; set; }
        public string Surname { get; set; }
        public char Gender { get; set; }
        public DateTime Dob { get; set; }
        public List<Marks> marksList { get; set; }

    }

    public class Marks
    {
        public string StudentNo { get; set; }
        public string SubjectName { get; set; }
        public string SubjectMark { get; set; }
    }

            List<Student> students = new List<Student>
            {
                 new Student(){StudentNo = "1", Name="Johnny",Surname="Walker",Gender='M', Dob=Convert.ToDateTime("2008-12-01"), marksList = new List<Marks> { marks } },
            };

Your code sample is incomplete, but form the error your ‘marks’ is already a list, therefore it should be

marksList = marks;

or

marksList = new List<Marks>(marks)

List initializer is suger for .Add and that is why you cannot use it.

FYI a better naming convention is class name “Mark” and property name “Marks”.

“MarksList” is like calling a property “FirstNameString”

 

[Johnatan56]

Your code sample is incomplete, but form the error your ‘marks’ is already a list, therefore it should be

marksList = marks;

or

marksList = new List<Marks>(marks)

List initializer is suger for .Add and that is why you cannot use it.

FYI a better naming convention is class name “Mark” and property name “Marks”.

“MarksList” is like calling a property “FirstNameString”

Would still be fine with markList, says what it is, but yeah, marks would be better as add s for collection if it works in English.

Each is a singular mark based on that class (as it should be), would also capitalize the Mark list, since publicly accessible.

 

[Magnum]

Nuclear Emergency Search Team List?

 

[[)roi(]]

List<Student> students = new List<Student>
{
    new Student(){StudentNo = "1", Name="Johnny",Surname="Walker",Gender='M', Dob=Convert.ToDateTime("2008-12-01"), marksList = (new List<List<Marks>> { marks }).SelectMany(x => x) },
};

 

[Solarion]

List<Student> students = new List<Student>
{
    new Student(){StudentNo = "1", Name="Johnny",Surname="Walker",Gender='M', Dob=Convert.ToDateTime("2008-12-01"), marksList = (new List<List<Marks>> { marks }).SelectMany(x => x) },
};

Because Johnny Walker

Busy making a web service out of that app

 

[retromodcoza]

I'm actually getting a list within a list if I do it this way.

When I return a student, I get a list of marks, then I open that I have another list of marks, only when I open that do I actually see the marks

But you put the marks list within another marks list. So the code is working as expected.

Take it step by step. Which part is knocking you out? ... :

List<Marks> marksList = new List<Marks> (); //Creates new marks list

Marks mark1 = {StudentNo="1",SubjectName = "History",SubjectMark = "50"} //Create a mark
Marks mark2 = {StudentNo="1",SubjectName = "Maths",SubjectMark = "70"} //Create another mark

marksList.Add(mark1); //Add the first mark to the list
marksList.Add(mark2); //Add the second mark to the list

//Add the list of marks to the right student
List<Student> students = new List<Student>
{
    new Student(){StudentNo = "1", Name="Johnny",Surname="Walker",Gender='M', Dob=Convert.ToDateTime("2008-12-01"), markslist },
};

 

[Solarion]

It's working. Was just me being pedantic about how the debugging looked when inspected. It works perfectly.