using SqlSugar; using System; using System.Collections.Generic; using System.Linq; using System.Linq.Expressions; using System.Text; using System.Threading.Tasks; namespace OrmTest.Models { public class School { [SugarColumn(IsPrimaryKey = true, IsIdentity = true)] public int Id { get; set; } [SugarColumn(Length = 50,IsNullable =true)] public string Name { get; set; } } }