从EF Code-First DbContext类生成SQL CE数据库

Question

我已经以Entity Framework Code-First约定的方式定义了一组类,并使用System.ComponentModel.DataAnnotations属性注释了类属性.

现在我想从此代码生成SQL Server Compact Edition(SCSE)(4.0)数据库.

需要什么代码才能执行此操作以及需要导入哪些程序集？

到目前为止,我已导入C:\ Program Files(x86)\ Microsoft SQL Server Compact Edition\v4.0\Desktop {System.Data.SqlServerCe.dll,System.Data.SqlServerCe.Entity\System.Data.SqlServerCe. Entity.dll} dll文件.

任何指针赞赏.文章和诸如此类的.

Answer 1

我找到了解决方案.关键是这行代码:

DbDatabase.DefaultConnectionFactory = new 
                      SqlCeConnectionFactory("System.Data.SqlServerCe.4.0");

这是一个完整的示例:

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

namespace Proto
{
    using System.Data;
    using System.Data.Entity;
    using System.Data.Entity.Database;
    using System.Data.SqlServerCe;
    using System.ComponentModel.DataAnnotations;

    class Program
    {
        static void Main(string[] args)
        {
            DbDatabase.DefaultConnectionFactory = new 
                        SqlCeConnectionFactory("System.Data.SqlServerCe.4.0");
            DbDatabase.SetInitializer(
                         new DropCreateDatabaseIfModelChanges<ProtoCatalog>()
                  );

            using (var db = new ProtoCatalog())
            {
                var user = new User
                {
                    Name = "bob",
                    Password = "123",
                    Creation = DateTime.Now,
                    PrimaryEmailAddress = "bob@example.com"
                };

                db.Users.Add(user);

                db.SaveChanges();

                Console.ReadKey();
            }
       }
    }

    public class ProtoCatalog : DbContext
    {
        public DbSet<User> Users { get; set; }
    }

    public class User
    {
        [Key, StringLength(50)]
        public string Name { get; set; }

        [Required, StringLength(100)]
        public string Password { get; set; }

        [Required, StringLength(320)]
        public string PrimaryEmailAddress { get; set; }

        [StringLength(320)]
        public string SecondaryEmailAddress { get; set; }

        [Required]
        public DateTime Creation { get; set; }

        public bool Active { get; set; }
    }
}

尽管如此,API可能会在EF Code-First CTP 5和RTM之间发生变化,但现在就是这样做的.

我发了一篇关于它的小博客文章.