小颜学开发

转自：EF Code First Migrations数据库迁移要点：安装EF：Install-Package EntityFramework修改类文件PortalContext.cs的静态构造函数：static PortalContext(){ Database.SetInitializer(null);}设置允许自动迁移，和迁移时允许数据丢失 public Conf

1.动态排序 public static IQueryable Sort(this IQueryable source, string sort) { string sortStr = ""; string sortDirection = ""; string sortDir = string.Empty;