1.引入Nuget包：

2.書寫EF操作上下文

public class MySqlContext:DbContext
{
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBulder)
        {
            optionsBulder.UseMySQL("Database=newspublish;Data Source=127.0.0.1;Port=3306;User Id=root;Password=123456;Charset=utf8;SslMode=none;");
        }

        public virtual DbSet<news> news { get; set; }

}
 

news類：

public class news
{
        public int id { get; set; }
        public string title { get; set; }
        public string content { get; set; }
        public int typeid { get; set; }
}

3.操作mysql資料庫

MySqlContext context = new MySqlContext();
#region 新增
context.news.Add(new news { title = "aaaa", content = "0000", typeid = 8 });
context.SaveChanges();
#endregion

#region 查詢
Console.WriteLine(context.news.Find(12).title);
#endregion

#region 更新
var news = context.news.Find(12);
news.title = "sada";
news.content = "2121";
context.news.Update(news);
context.SaveChanges();
#endregion

#region 刪除
context.news.Remove(new news { id = 12});
context.SaveChanges();
#endregion