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using System.ComponentModel;
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using System.ComponentModel.DataAnnotations;
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using System.ComponentModel.DataAnnotations.Schema;
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namespace Common.Core
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{
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/// <summary>
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/// 数据库Id为numberic且为数据库自动生成的数据实体使用该基类,用法同Entity
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/// <para>该场景通常为SqlServer的自动增长类型和Oracle自带的Sequence</para>
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/// </summary>
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public class IntAutoGenEntity : BaseEntity
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{
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[Browsable(false)]
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[Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
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public int Id { get; set; }
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public override bool KeyIsNull()
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{
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return Id == 0;
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}
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public override void GenerateDefaultKeyVal()
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{
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//主键自动增长类型,可以不用该方法生成主键,设置该方法为空方法即可
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//当DbContext执行SaveChanges()后,如果添加成功,可以直接获取对象的Id
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}
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}
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}
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