Entity framework core 如何在ASP.NET Core API控制器中获取多个表的记录

我想从数据库中获取3个表，仅获取3个表中的所有值

这个api位于Sales Controller中，我想在其中获取3个表Customer、Product和Store，以便在表单中使用它们

下面是数据库上下文

namespace CRUDReact.Model
{
public class DataBaseContext: DbContext
{
    public DataBaseContext(DbContextOptions<DataBaseContext> options) : base(options) { }

    public DbSet<Customer> Customer { get; set; }
    public DbSet<Sales> Sales { get; set; }
    public DbSet<Product> Product { get; set; }
    public DbSet<Store> Store { get; set; }

}
}

---

使用Include获取Sales将导致从子表获取数据。你为什么要投射它

var salesdata = await _context.Sales
             .Include(s => s.Customer)
             .Include(s => s.Product)
             .Include(s => s.Store).ToListAsync();

此外，通常销售会有商店，客户和产品清单，你确定你的型号是正确的

namespace CRUDReact.Models
{
public class Sales
{
    [Key]
    public int SalesId { get; set; }

    public int ProductRefId { get; set; }
    [ForeignKey("ProductRefId")]
    public Product Product { get; set; }

    public int CustomerRefId { get; set; }
    [ForeignKey("CustomerRefId")]
    public Customer Customer { get; set; }

    public int StoreRefId { get; set; }
    [ForeignKey("StoreRefId")]
    public Store Store { get; set; }

    [DataType(DataType.Date)]
    public string DateSold { get; set; }
}
}

var salesdata = await _context.Sales
             .Include(s => s.Customer)
             .Include(s => s.Product)
             .Include(s => s.Store).ToListAsync();