WebAPI筆記(二)-實體數據模型增刪改查

實體模型的增刪改查，網上到處是彼此連接，看了後，並不滿意，要麼只有查，要麼只有增加數據；

下面我把自己的測試結果放到這裏

創建一個類，StudentADO.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using WebAPITest.Models;

namespace WebAPITest.ADO
{
    public class StudentADO
    {
        //查詢
        public List<student> GetStudent() {
            using (var centent = new testEntities()) {
                return centent.student.ToList();
            }
        }
        //保存
        public void SaveStudent(student Objstudent) {
            using (var content = new testEntities()) {
                content.student.Add(Objstudent);
                content.SaveChanges();
            }
        }
        //更新
        public void UpdateStudent(int id, student Objstudent) {
            using (var content = new testEntities()) {
                student student1 = content.student.FirstOrDefault<student>(a => a.ID == id);
                if (id != Objstudent.ID)