Install-Package Microsoft.EntityFrameworkCore -Version 7.0.1

Install-Package Microsoft.EntityFrameworkCore.Tools -Version 7.0.1

Install-Package Microsoft.EntityFrameworkCore.SqlServer -Version 7.0.1

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();

// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle

builder.Services.AddEndpointsApiExplorer();

builder.Services.AddSwaggerGen();

var app = builder.Build();

app.UseCors(builder => builder

                .AllowAnyHeader()

                .AllowAnyMethod()

                .SetIsOriginAllowed((host) => true)

                .AllowCredentials()

            );

if (app.Environment.IsDevelopment() || app.Environment.IsProduction())

{

    app.UseDeveloperExceptionPage();

    app.UseSwagger();

    app.UseSwaggerUI(c =>{

        c.SwaggerEndpoint("/swagger/v1/swagger.json", "myapi v1");

    }) ;

}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();

using Microsoft.EntityFrameworkCore;

namespace NetCoreV2.DataAccesLayer

{

    public class Context : DbContext

    {

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)

        {

            optionsBuilder.UseSqlServer("Data Source=RAMBO3;Initial Catalog=Deneme;User ID=sa;Password=123456;TrustServerCertificate=True");

        }

        public DbSet<Ogrenci> Ogrenci { get; set; }

    }

}

using System.ComponentModel.DataAnnotations;

namespace NetCoreV2.DataAccesLayer

{

    public class Ogrenci

    {

        [Key]

        public int id { get; set; }

        public string ad { get; set; }

        public int yas { get; set; }

        public string? alan { get; set; }

    }

}

using Microsoft.AspNetCore.Http;

using Microsoft.AspNetCore.Mvc;

using NetCoreV2.DataAccesLayer;

namespace NetCoreV2.Controllers

{

    [Route("api/[controller]")]

    [ApiController]

    public class OgrenciController : ControllerBase

    {

        [HttpGet]

        public IActionResult EmployeeList()

        {

            using var c = new Context();

            var values = c.Ogrenci.ToList();

            return Ok(values);

        }

        [HttpPost]

        public IActionResult EmployeeAdd(Ogrenci employee)

        {

            using var c = new Context();

            c.Add(employee);

            c.SaveChanges();

            return Ok();

        }

    }

}

projende debug yapmak için : https://marketplace.visualstudio.com/items?itemName=vs-publisher-1448185.ConveyorbyKeyoti

kaynak : https://www.youtube.com/watch?v=9ixt9bdAHs8&ab_channel=Asfendyar