37 lines
820 B
C#
37 lines
820 B
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Entities.Contracts
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{
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[Table("textbook")]
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public class Textbook
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{
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[Key]
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public Guid Id { get; set; }
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public GradeEnum Grade { get; set; } = GradeEnum.Unknown;
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public string Title { get; set; } = string.Empty;
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public Publisher Publisher { get; set; } = Publisher.部编版;
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public SubjectAreaEnum SubjectArea { get; set; } = SubjectAreaEnum.Unknown;
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[InverseProperty(nameof(Lesson.Textbook))]
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public virtual ICollection<Lesson> Lessons { get; set; }
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public Textbook()
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{
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Id = Guid.NewGuid();
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Lessons = new HashSet<Lesson>();
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}
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}
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}
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