コントローラの作成例

UsersContoller.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.AspNetCore.Mvc;

namespace SampleProject.Controllers
{
    [Route("api/[controller]")]
    public class UsersController : Controller
    {
        // GET: api/users
        [HttpGet]
        public IEnumerable<Models.User> Get()
        {
            using (var db = new Models.Context())
                if (db.Users.Any())
                    return db.Users.ToArray();
                else
                    return (new List<Models.User>());
        }

        // GET api/users/5
        [HttpGet("{id}")]
        public Models.User Get(int id)
        {
            using (var db = new Models.Context())
                    return db.Users.FirstOrDefault(t => t.Id == id);
        }

        // POST api/users
        [HttpPost]
        public void Post([FromBody]Models.User value)
        {
            using (var db = new Models.Context())
            {
                value.LastUpdated = DateTime.UtcNow;
                db.Add(value);
                db.SaveChanges();
            }
        }

        // PUT api/users/5
        [HttpPut("{id}")]
        public void Put(int id, [FromBody]Models.User value)
        {
            using (var db = new Models.Context())
            {
                if (db.Users.Any(u => u.Id == id && u.LastUpdated == value.LastUpdated))
                {
                    value.LastUpdated = DateTime.UtcNow;
                    db.Update(value);
                    db.SaveChanges();
                }
            }
        }

        // DELETE api/users/5
        [HttpDelete("{id}")]
        public void Delete(int id)
        {
            using (var db = new Models.Context())
                if (db.Users.Any(u => u.Id == id))
                {
                    var user = db.Users.First(u => u.Id == id);
                    user.LastUpdated = DateTime.UtcNow;
                    user.GCRecord = Guid.NewGuid().ToString();
                    db.Update(user);
                    db.SaveChanges();
                }
        }
    }
}