我得到了例外,无法弄明白。
Settings ='((BandwidthRestriction.Models.SettingRespository)settingRespository).Settings'引发了类型'System.Data.SqlClient.SqlException'的异常
我有两张桌子。
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; }
}
}
和
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; }
}
}
另一张表
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; }
}
}
表的结构喜欢
[![12] [1] [1]
我还有对应的dbcontext
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)
{
}
}
在资源库中,我有
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;
}
}
在控制器中,我通过了DI。
[Route("api/[controller]")]
public class BandwidthController : Controller
{
private readonly ISettingRespository _settingRespository;
public BandwidthController(ISettingRespository settingRespository)
{
_settingRespository = settingRespository;
}
然而,当我将鼠标悬停在_settingRespository
时。我看到例外:
Settings ='((BandwidthRestriction.Models.SettingRespository)settingRespository).Settings'引发了'System.InvalidOperationException'类型的异常
修改
根据评论,我修复了表名拼写错误问题。错误是SqlException: Invalid column name 'FacilitySettingOverrideSettingId'
,但我在stackoverflow.发现了类似的问题。也许我错误地使用了代码?
换句话说,表 FacilitySettingOverride ,它没有主键。是原因吗?
修改-1
每条评论。我重新设计了数据库。我认为Setting-FacilitySettingOverride to be 1:1
[![新] [3] [3]
和
[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; }
}
新错误
代码中的SqlException:列名'FacilityId1'无效。
:
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);
}
}
和
[Table("Facilities")]
public class Facility
{
[Key]
public int Id { get; set; }
public string Name { get; set; }
}
我可以在上下文中获得Setting
但FacilitySettingOverride
。