问在创建记录时，使用EF / EF Core 2向SQL表中的新列添加带有Id的前缀

EN

public class Student
{
    public int Id { get; set; }

    private string reference;

    public string Reference
    {
        get
        {
            return this.reference;
        }
        set
        {
            this.reference = "ST" + Id;
        }
    }
}

Id - Reference
1   - ST1
2   - ST2

public class SchoolContext : DbContext
{
    public DbSet<Student> Student { get; set; }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Student>()
        .Property(b => b.Id)            
        .ValueGeneratedOnAdd();

        modelBuilder.Entity<Student>()
        .Property(b => b.Reference)
        .HasComputedColumnSql("[Id]")
        .ValueGeneratedOnAdd();
    }
}