using System; using System.Collections.Generic; using System.Linq; using System.Text; using SqlSugar; using OrmTest.Demo; namespace OrmTest.Demo { public class ComplexModel : DemoBase { public static void Init() { var db = GetInstance(); var students = db.Queryable().ToList(); if (students != null) { foreach (var item in students) { Console.WriteLine(item.SchoolName); if (item.SchoolSingle != null) { Console.WriteLine(item.SchoolSingle.Name); } if (item.SchoolList != null) { Console.WriteLine(item.SchoolList.Count); } } } } } [SugarTable("Student")] public class CMStudent : ModelContext { public int Id { get; set; } public string Name { get; set; } public int SchoolId { get; set; } [SugarColumn(IsIgnore = true)] public string SchoolName { get { if (this.SchoolSingle != null) return this.SchoolSingle.Name; else return null; } } [SugarColumn(IsIgnore = true)] public CMSchool SchoolSingle { get { return base.CreateMapping().Single(it => it.Id == this.SchoolId); } } [SugarColumn(IsIgnore = true)] public List SchoolList { get { return base.CreateMapping().Where(it => it.Id == this.SchoolId).ToList(); } } } [SugarTable("School")] public class CMSchool { public int Id { get; set; } public string Name { get; set; } } }