.net framework , code first

1. 创建一个控制台应用程序， 并添加引用

2 创建 一个类

public class New
    {
        [Key]
        public string NewId { get; set; }
        public string Title { get; set; }
    }

3 创建一个类继承 DbContext

 public class NewContext : DbContext
    {
        public NewContext()
        {
            System.Diagnostics.Debug.Write(Database.Connection.ConnectionString);
        }
        public DbSet<New> News { get; set; }
    }

4 config 文件配置 ConnectionString

<add name="NewContext" connectionString="Data Source=.;Initial Catalog=CodeFirstTest;Integrated Security=SSPI;" providerName="System.Data.SqlClient" />

5 在Main 方法中调用

 using (var db = new NewContext())
                {
                    Console.Write("start");
                    Console.OutputEncoding = Encoding.GetEncoding();
 
                    var newModel = new New { NewId = Guid.NewGuid().ToString(), Title = "sdfdsfdsfdsf" };
                    db.News.Add(newModel);
                    db.SaveChanges();
                    foreach (var n in db.News)
                    {
                        Console.WriteLine(n.Title);
                    }
                    Console.Write("success");
                    Console.ReadKey();
                }