add students controller

Controllers/StudentsController.cs

@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using TestApplication.Data;
+using TestApplication.DTO;
+using System.Linq;
+using Microsoft.EntityFrameworkCore;
+
+namespace TestApplication.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class StudentsController : ControllerBase
+    {
+        private readonly Context _context;
+
+        public StudentsController(Context context)
+        {
+            _context = context;
+        }
+
+        [HttpGet]
+        public async Task<ActionResult<IEnumerable<StudentDTO>>> GetStudents()
+        {
+            var student = from students in _context.Student
+            join student_descriptions in _context.Student_Description on students.id equals student_descriptions.students_id
+            select new StudentDTO
+            {
+                Student_id = students.id,
+                Student_grade = students.grade,
+            };
+
+            return await student.ToListAsync();
+        }
+
+        [HttpGet("{id}")]
+        public ActionResult<StudentDTO> GetStudent_byId(int id)
+        {
+            var student = from students in _context.Student
+            join student_descriptions in _context.Student_Description on students.id equals student_descriptions.students_id
+            select new StudentDTO
+            {
+                Student_id = students.id,
+                Student_grade = students.grade,
+                Age = student_descriptions.age,
+                First_name = student_descriptions.first_name,
+                Last_name = student_descriptions.last_name,
+                Address = student_descriptions.address,
+                Country = student_descriptions.country
+            };
+
+            var student_by_id = student.ToList().Find(x => x.Student_id == id);
+
+            if (student_by_id == null)
+            {
+                return NotFound();
+            }
+            return student_by_id;
+        }
+    }
+}

DTO/StudentDTO.cs

@@ -0,0 +1,15 @@
+using TestApplication.Models;
+
+namespace TestApplication.DTO
+{
+    public class StudentDTO
+    {
+        public int Student_id { get; set; }
+        public string Student_grade { get; set; }
+        public int Age { get; set; }
+        public string First_name { get; set; }
+        public string Last_name { get; set; }
+        public string Address { get; set; }
+        public string Country { get; set; }
+    }
+}

Data/Context.cs

@@ -9,5 +9,7 @@ namespace TestApplication.Data
         public DbSet<Values> Values {get; set;}
         public DbSet<Book> Book {get; set;}
         public DbSet<Book_description> Book_Description {get; set;}
+        public DbSet<Student> Student {get; set;}
+        public DbSet<Student_description> Student_Description { get; set; }
     }
 }

Models/Student.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace TestApplication.Models
+{
+    public class Student
+    {
+        [Key]
+        public int id { get; set; }
+        public string grade { get; set; }
+    }
+}

Models/Student_description.cs

@@ -0,0 +1,16 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace TestApplication.Models
+{
+    public class Student_description
+    {
+        [Key]
+        public int id { get; set; }
+        public int students_id { get; set; }
+        public int age { get; set; }
+        public string first_name { get; set; }
+        public string last_name { get; set; }
+        public string address { get; set; }
+        public string country { get; set; }
+    }
+}