を動作していない私のDBの詳細です。Entity Frameworkの:レイジーLaodingは、私はここ..単純な2つのテーブルのクエリを含んでものために(複数回/円形/ループ)関連するすべてのテーブルが読み込ま</p> <p>を取得しています
public interface IPhaniDbContext
{
DbSet<Data_CustomerDetail> CustomerDetails { get; set; }
DbSet<Data_DisplayStyle> DisplayStyles { get; set; }
DbSet<Data_ResumeDetail> ResumeDetails { get; set; }
int Save();
Task<int> SaveChangesAsync();
Database Database { get; }
DbEntityEntry Entity(object entity);
DbSet<TEntity> Set<TEntity>() where TEntity : class;
}
public class PhaniDbContext :DbContext , IPhaniDbContext
{
public PhaniDbContext() : base(ConnectionString())
{
Configuration.LazyLoadingEnabled = false;
}
private static string ConnectionString()
{
return ConfigurationManager.AppSettings[Constants.Appsetting_PhaniDbConnectionString];
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Configurations.AddFromAssembly(Assembly.GetAssembly(GetType()));
modelBuilder.Entity<Data_CustomerDetail>()
.HasMany(x => x.ResumeDetails).WithRequired(e => e.CustomerDetail).WillCascadeOnDelete(false);
//modelBuilder.Entity<Data_CustomerDetail>()
// .Map(x => x.Requires("ResumeDetails")).Ignore(e => e.ResumeDetails)
// .Map(x => x.Requires("DisplayStyle")).Ignore(e => e.ResumeDetails);
modelBuilder.Entity<Data_DisplayStyle>()
.HasMany(x => x.ResumeDetails).WithRequired(e => e.DisplayStyle).WillCascadeOnDelete(false);
}
public int Save()
{
return base.SaveChanges();
}
public DbEntityEntry Entity(object entity)
{
throw new NotImplementedException();
}
//TODO: No-Urget-Over ride Save just to know. and all other possible overrides.
public virtual DbSet<Data_CustomerDetail> CustomerDetails { get; set; }
public virtual DbSet<Data_DisplayStyle> DisplayStyles { get; set; }
public virtual DbSet<Data_ResumeDetail> ResumeDetails { get; set; }
}
問合せ:
[Table("CustomerDetails")]
public class Data_CustomerDetail
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public Data_CustomerDetail()
{
ResumeDetails = new HashSet<Data_ResumeDetail>();
}
[Key]
public int CustomerDetailsID { get; set; }
[StringLength(500)]
public string FirstName { get; set; }
[StringLength(500)]
public string LastName { get; set; }
[StringLength(50)]
public string phoneNumber { get; set; }
[StringLength(50)]
public string Zipcode { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<Data_ResumeDetail> ResumeDetails { get; set; }
}
public class Data_DisplayStyle
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public Data_DisplayStyle()
{
ResumeDetails = new HashSet<Data_ResumeDetail>();
}
public int DisplayStyleID { get; set; }
[StringLength(500)]
public string Name { get; set; }
[StringLength(500)]
public string Description { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<Data_ResumeDetail> ResumeDetails { get; set; }
}
[Table("ResumeDetails")]
public class Data_ResumeDetail
{
[Key]
public int ResumeDetailsId { get; set; }
[Column("CAREER OBJECTIVE")]
[StringLength(4000)]
public string CAREER_OBJECTIVE { get; set; }
[Column("HONORS AND REWARDS")]
[StringLength(4000)]
public string HONORS_AND_REWARDS { get; set; }
[Column("PROFESSIONAL RESPONSIBILITIES")]
[StringLength(4000)]
public string PROFESSIONAL_RESPONSIBILITIES { get; set; }
[Column("RELATED EXPERIENCE")]
[StringLength(4000)]
public string RELATED_EXPERIENCE { get; set; }
public int? CustomerDetailsID { get; set; }
public int? DisplayStyleId { get; set; }
public virtual Data_CustomerDetail CustomerDetail { get; set; }
public virtual Data_DisplayStyle DisplayStyle { get; set; }
}
は、誰かがこれを解決するには私を助けてもらえ...
私はちょうどほしいCustomerDetailsとResumeDetailsと:
_phaniDbContext.CustomerDetails
.Include(x => x.ResumeDetails)
.Include(x=>x.ResumeDetails.Select(y=>y.DisplayStyle))
.First(x=>x.CustomerDetailsID == customerId);
私POCOSはここにあります一回...表示スタイルテーブル...複数回ではありません..
このは私のオブジェクトの重量増加している
動作しませんでしたが、 'Configuration.LazyLoadingEnabled = false;'を追加しました。 –
返信いただきありがとうございます。 Configuration.LazyLoadingEnabled =同じ方法でロードすることもできます。 –
EFに必要なエンティティを関連付ける方法を伝えるために、 '.HasForeignKey(...)'または 'ForeignKey'属性を使用したことはありません。以下も参照してください:https://stackoverflow.com/questions/19920412/specifying-hasforeignkey-with-modelbuilder – Eris