C# 在ASP.Net核心MVC2.1的模型中获取对列表的访问

我想做一个简单的ASP.Net核心MVC应用程序

我有两种型号：

public class Farming
{
    [Key]
    public int    Id                 { get; set; }
    public string Localization       { get; set; }
    public List<Animal> Animals      { get; set; } //i want to get into it 
    public List<Worker> Workers      { get; set; } //from cshtml file
}

public class Animal 
{
    [Key]
    public int      Id                  { get; set; }
    public Species  Species             { get; set; }
    public DateTime BirthDate           { get; set; } 
    public bool     Sex                 { get; set; } 
    public DateTime ImpregnationDate    { get; set; } 
}

public class Worker 
{
    [Key]
    public int      Id                  { get; set; }
    public string   FirstName           { get; set; }
    public string   LastName            { get; set; } 
    public string   Position            { get; set; } 
    public float    Salary              { get; set; } 
    public DateTime EmploymentDate      { get; set; } 
    public DateTime EndOfEmploymentDate { get; set; } 
}

从FarmingController.cs转到List.cshtml的方法

但我从视觉上得到的信息是，动物没有定义FarmingId，这是真的，看看动物模型，但它存在于dbo.Animals中。我是新来的，有什么想法吗

编辑2：

我将数据库编辑为此表单，现在效果更好：

public class Farming
{
    [Key]
    public int    Id                      { get; set; }
    public string Localization            { get; set; }

    public List<Animal>      Animals      { get; set; }//
    public List<Worker>      Workers      { get; set; }//
}

public class Animal 
{
    [Key]
    public int      Id                       { get; set; }
    public DateTime BirthDate                { get; set; } 
    public bool     Sex                      { get; set; } 
    public DateTime ImpregnationDate         { get; set; } 

    [ForeignKey("Farming")]
    public int      FarmingId                { get; set; }
    public Farming  Farming                  { get; set; }
}

public class Worker //pracownik
{
    [Key]
    public int      Id                  { get; set; }
    public string   FirstName           { get; set; }
    public string   LastName            { get; set; } 
    public string   Position            { get; set; } 
    public float    Salary              { get; set; } 
    public DateTime EmploymentDate      { get; set; } 
    public DateTime EndOfEmploymentDate { get; set; } 

    [ForeignKey("Farming")]
    public int      FarmingId           { get; set; }
    public Farming  Farming             { get; set; }
}

---

一切似乎都很好，但尽量明确地包括动物

 Farm theFarm = _context.Farms.Include(f => f.Animals).Where(f => f.Id == farmId);

农场的对象将包含农场的所有字段以及动物列表。farmId是您想要获取的农场的id

使用此选项获取所有农场及其动物：

var theFarms = _context.Farms.Include(f => f.Animals).ToList();

---

嗨，谢谢你的回答。我是ASP新手，所以我需要一个更详细的答案：D我试图做的：var farming=\u context.Farms.Includef=>f.anists.Wheref=>f.Id==farmId；但是它没有在FarmingController.cs中找到farmId。我编辑了我的答案，因为我的问题中没有详细说明try id而不是farmId。它是传递给函数的值。尽量使用更具描述性的名字，这会让你的生活更轻松

public class Farming
{
    [Key]
    public int    Id                      { get; set; }
    public string Localization            { get; set; }

    public List<Animal>      Animals      { get; set; }//
    public List<Worker>      Workers      { get; set; }//
}

public class Animal 
{
    [Key]
    public int      Id                       { get; set; }
    public DateTime BirthDate                { get; set; } 
    public bool     Sex                      { get; set; } 
    public DateTime ImpregnationDate         { get; set; } 

    [ForeignKey("Farming")]
    public int      FarmingId                { get; set; }
    public Farming  Farming                  { get; set; }
}

public class Worker //pracownik
{
    [Key]
    public int      Id                  { get; set; }
    public string   FirstName           { get; set; }
    public string   LastName            { get; set; } 
    public string   Position            { get; set; } 
    public float    Salary              { get; set; } 
    public DateTime EmploymentDate      { get; set; } 
    public DateTime EndOfEmploymentDate { get; set; } 

    [ForeignKey("Farming")]
    public int      FarmingId           { get; set; }
    public Farming  Farming             { get; set; }
}

 Farm theFarm = _context.Farms.Include(f => f.Animals).Where(f => f.Id == farmId);

var theFarms = _context.Farms.Include(f => f.Animals).ToList();