EF修改记录

Posted 2020-10-20 爱踢两键

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace EFDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建数据库上下文对象
            EFDBEntities efdb = new EFDBEntities();
            //想修改对象，首先找到要修改的对象
              // Students objStudent = efdb.Students.FirstOrDefault(s => s.StudentId ==100006);

            Students objStudent = (from s in efdb.Students where s.StudentId == 100006 select s).First<Students>();

            //再次修改各个属性值
            objStudent.StudentName = "张红利";
            objStudent.PhoneNumber = "88888888";

            //提交保存
            int result = efdb.SaveChanges();
            Console.WriteLine(result);

            Console.ReadLine();
        }
        }
    }