实体框架代码第一个数据库文件未在APP_DATA中创建,但查询工作

Question

我博客的模型:

namespace AlexPeta_2.Models
{
    public class Article
    {
        public int ArticleId { get; set; }
        public string Title { get; set; }
        public string Text { get; set; }
        public char Published { get; set; }
        public DateTime CreatedDate { get; set; }
        public char AllowComment { get; set; }

        public virtual ICollection<Tag> Tags { get; set; }
        public virtual ICollection<Comment> Comments { get; set; }
    }
}

namespace AlexPeta_2.Models
{
    public class Comment
    {
        public int CommentId { get; set; }
        public string Name { get; set; }
        public string Email { get; set; }
        public string HomePage { get; set; }
        public string Comm { get; set; }
        public DateTime CreatedDate { get; set; }
    }
}

namespace AlexPeta_2.Models
{
    public class Tag
    {
        public int TagId { get; set; }
        public string TagName { get; set; }
        public virtual ICollection<Article> Articles { get; set; }
    }
}

这是我的dbsets:

public class BlogContext : DbContext
{
    public DbSet<Article> Articles { get; set; }
    public DbSet<Tag> Tags { get; set; }
    public DbSet<Comment> Comments { get; set; }
}

这是我的初始化程序:

public class BlogInitializer : DropCreateDatabaseIfModelChanges<BlogContext>
    {
        protected override void Seed(BlogContext context)
        {

            List<Tag> tags = new List<Tag>
            {
                new Tag { TagId = 1, TagName = "Javascript" },
                new Tag { TagId = 2, TagName = "Bodybuilding" },
                new Tag { TagId = 3, TagName = "Uncategorised" },
                new Tag { TagId = 4, TagName = "CSS" },
                new Tag { TagId = 5, TagName = "HTML/XHTML" },
                new Tag { TagId = 6, TagName = "APEX" },
                new Tag { TagId = 7, TagName = "PL/SQL" },
                new Tag { TagId = 8, TagName = "Personal" },
                new Tag { TagId = 9, TagName = "ASP" },
                new Tag { TagId = 10, TagName = "MVC" },
                new Tag { TagId = 11, TagName = "C#" },
                new Tag { TagId = 12, TagName = "Snowboarding" }
            };
            tags.ForEach(t => context.Tags.Add(t));
            context.SaveChanges();
        }
    }

有趣的是:我在webconfig中没有连接字符串运行应用程序,运行正常,我在控制器中看到我的所有标签,但APP_DATA中没有数据库文件？那怎么样？或者发生了什么？

Answer 1

如果未提供连接字符串,则EF Code First将在本地SQLExpress实例上使用用户凭据(窗口)创建数据库.您可以使用SQL Server Management Studio Express并登录到本地实例来验证相同的内容.