数据库连接

1.web.config添加数据库连接 <add name=" GuestbookContext" connectionString="server=.;database=Guestbook;uid=sa;pwd=qwe123!@#" providerName="System.Data.SqlClient" /> 2.创建DbContext,类的名字必须和webconfig建的名字一致 public class GuestbookContext:DbContext { public System.Data.Entity.DbSet<GuestbookEntry> Entries { get; set; } }