public partial class ClaimEntities : DbContext
{
public ClaimEntities()
: base("name=ClaimEntities")
{
this.Configuration.LazyLoadingEnabled = false;
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
throw new UnintentionalCodeFirstException();
}
public DbSet<ClaimInformation> ClaimInformations { get; set; }
public DbSet<ClaimInformation_HealthCareCode> ClaimInformation_HealthCareCode { get; set; }
}
}
public partial class ClaimInformation
{
public List<ClaimInformation_HealthCareCode> OtherDiagnosisCodes
{
get
{
return this.ClaimInformation_HealthCareCode.Where(c => c.CodeQualifier == "BF" || c.CodeQualifier == "ABF").ToList();
}
}
}
public partial class ClaimInformation
{
public ClaimInformation()
{
this.ClaimInformation_HealthCareCode = new ObservableListSource<ClaimInformation_HealthCareCode>();
}
public virtual ObservableListSource<ClaimInformation_HealthCareCode> ClaimInformation_HealthCareCode { get; set; }
}
ClaimInformation_HealthcareCodes是实体ClaimInformation上的导航属性。在ClaimsInformation和ClaimInformation_healthcareCodes之间的1-M。一个声明可以有许多ClaimHealthcareCodes。 这是它是如何在上下文导航属性的跟踪更改
_context.ClaimInformations.Include(h => h.ClaimInformation_HealthCareCode)
如何使上下文检测的导航属性的改变加载。在代码中,我删除了一个healthcareCode条目。这是ClaimInformationClass中的一个列表,并且是虚拟的。 1-M this.claiminformation.claiminfo_healthcarecodes [i] .remove();此行连接到上下文。
private string GetTableName(DbEntityEntry dbEntry)
{
string entryName = dbEntry.Entity.GetType().Name;
int length = entryName.IndexOf('_');
TableAttribute tableAttr = dbEntry.Entity.GetType().GetCustomAttributes(typeof(TableAttribute),
false).SingleOrDefault() as TableAttribute;
string tableName = tableAttr != null ? tableAttr.Name : entryName.Substring(0,length);
return tableName;
}
此代码返回更改的条目“ClaimInformation”这部分是真实的,但它有更深入到一个小到具有删除的条目的导航属性。