EF_Code_First/EF_Code_First/Program.cs

using System.Text;
using EF_Code_First.Models;
using System.Linq;
using Microsoft.EntityFrameworkCore;

namespace EF_Code_First
{
    public class Program
    {
        static void Main(string[] args)
        {
            using (var ctx = new SC_DbContext())
            {
                /*
                var grade = ctx.Grades.Single(g => g.GradeId == 5);

                
                var stud = new Student()
                {
                    StudentName = "Michael Maier",
                    Weight = (float?)102, 
                    Height = (decimal?)175,
                    DateOfBirth = DateTime.Parse("1970-10-11"),
                    Grade = grade
                };
                Console.WriteLine($"new Student: {stud}");
                ctx.Students.Add(stud);
                ctx.SaveChanges();
                */
                List<Grade> grades = ctx.Grades
                    .Include(st=> st.Students)
                    .ToList();

                List<Student> students = ctx.Students
                    .Include(g=> g.Grade)
                    .ToList();
                
                foreach (var s in students)
                {
                    
                    //Console.WriteLine(s.Grade.ToString);
                    
                    //var currentgrade = ctx.Grades.Single(g => g.GradeId == s.G_Id);
                    //Console.WriteLine($"Grade = {currentgrade.ToString} ");
                    StringBuilder b = new StringBuilder();
                    b.Append(s.StudentName);
                    b.Append(": ");
                    b.Append(s.Weight);
                    b.Append(": ");
                    b.Append(s.Height);
                    b.Append(": ");
                    b.Append(s.DateOfBirth);
                    b.Append(": ");
                    b.Append(s.Grade.GradeName);
                    b.Append(": ");
                    b.Append(s.Grade.Section);
                    Console.WriteLine(b.ToString());
                    
                }
                
                Console.WriteLine (ctx.DbPath);
               
               
                             
            }
        }
    }
}