设置'引发了'System.Data.SqlClient.SqlException'类型的异常

Question

I got the exception and can't figure it out.

Settings = '((BandwidthRestriction.Models.SettingRespository)settingRespository).Settings' threw an exception of type 'System.Data.SqlClient.SqlException'

I have two tables.

namespace BandwidthRestriction.Models
{
    [Table("Settings")]
    public class Setting
    {
        [Key]
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public string DefaultValue { get; set; }
        public string Classification { get; set; }
        public virtual FacilitySettingOverride FacilitySettingOverride { get; set; }
    }
}

And

namespace BandwidthRestriction.Models
{
    [Table("FacilitySettingOverride")]
    public class FacilitySettingOverride
    {
        [Key]
        public int FacilityId { get; set; }
        public int SettingId { get; set; }
        public string Value { get; set; }
        public virtual ICollection<Setting> Settings { get; set; }
        public virtual ICollection<Facility> Facilities { get; set; }
    }
}

Another table

namespace BandwidthRestriction.Models
{
    [Table("Facilities")]
    public class Facility
    {
        [Key]
        public int Id { get; set; }
        public string Name { get; set; }
        public ICollection<FacilitySettingOverride> FacilitySettingOverrides { get; set; }
    }
}

The table's structure likes

[![12][1]][1]

Also I have the correspond dbcontext as

 public class SettingDbContext : DbContext
{
    public DbSet<Setting> Settings { get; set; }
    public DbSet<FacilitySettingOverride> FacilitySettingOverride { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseSqlServer("Data Source=11.53.63.94;Initial Catalog=AAA;User ID=sa;password=password;Application Name=XXX");
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {

    }
}

In the respository, I have

namespace BandwidthRestriction.Models
{
    public class SettingRespository : ISettingRespository
    {
       public List<Setting> GetAllSettings()
       {
          return Settings.ToList();
       }

       public IEnumerable<Setting> Settings
       {
           get
           {
               List<Setting> settingList;
               using (SettingDbContext context = new SettingDbContext())
               {
                   settingList = context.Settings.ToList();
               }
               return settingList;
           }
        }

In the controller, I passed the DI.

 [Route("api/[controller]")]
 public class BandwidthController : Controller
 {
     private readonly ISettingRespository _settingRespository;

     public BandwidthController(ISettingRespository settingRespository)
     {
         _settingRespository = settingRespository;
     }

However when I hover the _settingRespository . I see the exception:

Settings = '((BandwidthRestriction.Models.SettingRespository)settingRespository).Settings' threw an exception of type 'System.InvalidOperationException'

EDIT:

Per the comment, I fixed the table name misspelling issue. The error is SqlException: Invalid column name 'FacilitySettingOverrideSettingId' , But I found a similar question at stackoverflow. Maybe I used code first wrongly?

In another word, the table FacilitySettingOverride , it doesn't have the primary key. Is it the cause?

EDIT-1

Per comments. I redesigned the DB. I think that Setting-FacilitySettingOverride to be 1:1 [![new][3]][3]

And

 [Table("FacilitySettingOverride")]
 public class FacilitySettingOverride
 {
    [Key]
    public int FacilityId { get; set; }

    public string Value { get; set; }
    public int SettingId { get; set; }

    public virtual Facility Facility { get; set; }
    public virtual Setting Setting { get; set; }
}

The new error is

SqlException: Invalid column name 'FacilityId1'.

in the code:

    public int GetFacilityBandwidthSetting(int facilityId)
    {
        using (SettingDbContext context = new SettingDbContext())
        {
            var setting = context.Settings.Single(s => s.Name == SettingType.TotalBandwidth.ToString());
            var value = context.FacilitySettingOverride.SingleOrDefault(x => x.FacilityId == facilityId
                && x.SettingId == setting.Id);
            if (value == null)
                return int.Parse(setting.DefaultValue);
            return int.Parse(value.Value);
        }
    }

and

 [Table("Facilities")]
 public class Facility
 {
     [Key]
     public int Id { get; set; }
     public string Name { get; set; }
 }

I can getting Setting but FacilitySettingOverride in the context.

Answer 1

Create POCO class in EF 7 code first

Basically they are same question. The key issue is to create the correct POCO class.