C# EF框架增加和查询

    class Program
    {
        static void Main(string[] args)
        {
            //1.插入******BlogEntities为数据库的对象，按需更改********
            using (BlogEntities dbContext = new BlogEntities())
            {
            //插入一条*********T_Article为表的对象，按需更改*********
            T_Article article = new T_Article()
            {
                Title = "标题1",
                Content = "内容1",
                PublishTime = DateTime.Now
            };
            dbContext.T_Article.Add(article);
 
            //插入多条
            for (int i = 0; i < 10; i++)
            {
                T_Article article = new T_Article()
                {
                    Title = "标题"+i,
                    Content = "内容"+i,
                    PublishTime = DateTime.Now
                };
                dbContext.T_Article.Add(article);
            }
            dbContext.SaveChanges();
          }
            //2.查询
            //2.1查询所有
            using (BlogEntities dbContext = new BlogEntities())
            {
                foreach (var item in dbContext.T_Article)
                {
                    Console.WriteLine("Id=" + item.ArticleId + ";Title=" + item.Title + ";Content=" + item.Content);
                }
            }
            //2.2条件查询
            using (BlogEntities dbContext = new BlogEntities())
            {
                var result = dbContext.T_Article.Where(a => a.Title == "标题1");
                foreach (var item in result)
                {
                    Console.WriteLine("Id=" + item.ArticleId + ";Title=" + item.Title + ";Content=" + item.Content);
                }
            }
            Console.ReadKey();
        }
    }
}