使用GeographyPoint的ASP.NET Core 2.0 - 实体类型＆＃39; CoordinateSystem＆＃39;需要定义主键

Question

ASP.NET Core 2.0使用GeographyPoint - 实体类型＆＃39; CoordinateSystem＆＃39;需要定义主键

我的项目一直运作良好，直到我添加了GeographyPoint的新模型。

DatabaseEnsureCreate()期间会弹出此异常。

我被困住了，似乎无法超越这个。这是我的模型中的代码段：

    using System.ComponentModel.DataAnnotations;
    using System.ComponentModel.DataAnnotations.Schema;
    using System.Spatial;

    //Id
    [Key]
    [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
    [Display(Description = "Id",Name = "Id", Prompt = "Id")]
    [ScaffoldColumn(true)]
    public new int Id { get; set; }


    //Geography Point
    [Column(TypeName = DatabaseExtension.TypeNameInteger)]
    [Display(Description = "Geography Point", Name = "Geography Point", 
    Prompt = "Geography Point")]
    [ScaffoldColumn(true)]
    public GeographyPoint Point { get; set; }