63 lines
1.3 KiB
C#
63 lines
1.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.Data.Entity;
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using System.Data.Entity.ModelConfiguration;
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namespace ChatRoomServer.Db.Entities
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{
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/// <summary>
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///系统公告
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///</summary>
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public class Announcement
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{
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/// <summary>
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/// 公告ID
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/// </summary>
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public int Id { get; set; }
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/// <summary>
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/// 标题
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/// </summary>
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public string Title { get; set; }
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/// <summary>
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/// 公告内容
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/// </summary>
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public string Content { get; set; }
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/// <summary>
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/// 发布时间
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/// </summary>
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public DateTime PubTime { get; set; }
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/// <summary>
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/// 是否是关键公告
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/// </summary>
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public bool Important { get; set; }
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/// <summary>
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/// 过期时间
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/// </summary>
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public DateTime ExpiresTime { get; set; }
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}
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/// <summary>
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/// 实体类 <see cref="Announcement" /> 的配置对象
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/// </summary>
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internal class AnnouncementConfiguration : EntityTypeConfiguration<Announcement>
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{
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public AnnouncementConfiguration()
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{
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ToTable("Chat_Announcement");
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HasKey(m => m.Id);
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Property(s => s.Id).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
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Property(s => s.Title).HasMaxLength(100).IsRequired();
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Property(s => s.Content).HasMaxLength(1000).IsRequired();
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}
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}
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}
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