Model表
public class Goods
{
public string ID { get; set; }
public string CreatedBy { get; set; }
public DateTime CreatedTime { get; set; }
public string ModifiedBy { get; set; }
public DateTime ModifiedTime { get; set; }
public string GoodsName { get; set; }
public int GoodsNum { get; set; }
}
配置文件
public class GoodsEntityTypeConfiguration : IEntityTypeConfiguration<Goods>
{
public void Configure(EntityTypeBuilder<Goods> builder)
{
builder.ToTable("Sample_Goods_01");
builder.HasKey(ci => ci.ID);
builder.Property(ci => ci.ID).IsRequired();
builder.Property(cb => cb.CreatedBy)
.IsRequired()
.HasMaxLength(20);
builder.Property(cb => cb.CreatedTime)
.IsRequired();
builder.Property(cb => cb.ModifiedBy)
.IsRequired()
.HasMaxLength(20);
builder.Property(cb => cb.GoodsName)
.IsRequired();
builder.Property(cb => cb.GoodsNum)
.IsRequired();
}
}
![](https://img2018.cnblogs.com/blog/196558/201812/196558-20181225155252442-245944978.png)
在MYSQL里,想生成ID保存GUID
,开始的时候直接生成 string 生成 text
没有达到我们的效果。ID应该为char(36)
,CreatedBy 应该为 varchar(20)
应该改为
public class GoodsEntityTypeConfiguration : IEntityTypeConfiguration<Goods>
{
public void Configure(EntityTypeBuilder<Goods> builder)
{
builder.ToTable("Sample_Goods_01");
builder.Property(ci => ci.ID).IsRequired().HasMaxLength(36).HasColumnType("char(36)");
builder.Property(cb => cb.CreatedBy)
.IsRequired()
.HasMaxLength(20).HasColumnType("varchar(20)");
builder.Property(cb => cb.CreatedTime)
.IsRequired();
builder.Property(cb => cb.ModifiedBy)
.IsRequired()
.HasMaxLength(20).HasColumnType("varchar(20)");
builder.Property(cb => cb.GoodsName)
.IsRequired().HasColumnType("varchar(20)");
builder.Property(cb => cb.GoodsNum)
.IsRequired();
}
}
![](https://img2018.cnblogs.com/blog/196558/201812/196558-20181225155527897-55276270.png)
Jeffcky,EntityFramework Core映射关系详解
MVC - 10.CodeFrist
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