Databases
StackOverflow2013
Postsdbo
POEF Code First CTP5 - Using the name of the property as column name for foreign key
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POEF Code First CTP5 - Using the name of the property as column name for foreign key
    primarykey
    data
    text
    <p>Given the following model:</p> <pre><code>public class Foo { public int Id { get; set;} public Bar TheBar { get; set; } } public class Bar { public int Id { get; set;} } </code></pre> <p>EF tries to generate the FK column as <strong>BarId</strong>.</p> <p>How can make it use <strong>TheBar</strong>?</p> <p>I've tried the following:</p> <pre><code>protected override void OnModelCreating(ModelBuilder modelBuilder) { modelBuilder.Entity&lt;Foo&gt;() .HasOptional(x =&gt; x.Bar) .WithMany() .IsIndependent() .Map(x =&gt; x.MapKey(bar =&gt; bar.Id, "TheBar")); } </code></pre> <p>But I get the following exception when trying to use the context:</p> <pre><code>Exception has been thrown by the target of an invocation. ---&gt; System.InvalidOperationException: Sequence contains more than one matching element Server stack trace: at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source, Func`2 predicate) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Navigation.IndependentAssociationMappingConfiguration`1.Configure(DbAssociationSetMapping associationSetMapping) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Navigation.NavigationPropertyConfiguration.Configure(DbDatabaseMapping databaseMapping) at System.Data.Entity.ModelConfiguration.Utilities.IEnumerableExtensions.Each[T](IEnumerable`1 ts, Action`1 action) at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.ConfigureAssociationMappings(DbDatabaseMapping databaseMapping) at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.Configure(DbEntityTypeMapping entityTypeMapping, DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.ModelConfiguration.ModelBuilder.Build(DbProviderManifest providerManifest, DbProviderInfo providerInfo, Boolean validateModel) at System.Data.Entity.ModelConfiguration.ModelBuilder.Build(DbConnection providerConnection) at System.Data.Entity.Internal.LazyInternalContext.CreateModel() at System.Lazy`1.CreateValue() Exception rethrown at [0]: at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source, Func`2 predicate) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Navigation.IndependentAssociationMappingConfiguration`1.Configure(DbAssociationSetMapping associationSetMapping) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Navigation.NavigationPropertyConfiguration.Configure(DbDatabaseMapping databaseMapping) at System.Data.Entity.ModelConfiguration.Utilities.IEnumerableExtensions.Each[T](IEnumerable`1 ts, Action`1 action) at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.ConfigureAssociationMappings(DbDatabaseMapping databaseMapping) at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.Configure(DbEntityTypeMapping entityTypeMapping, DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.ModelConfiguration.ModelBuilder.Build(DbProviderManifest providerManifest, DbProviderInfo providerInfo, Boolean validateModel) at System.Data.Entity.ModelConfiguration.ModelBuilder.Build(DbConnection providerConnection) at System.Data.Entity.Internal.LazyInternalContext.CreateModel() at System.Lazy`1.CreateValue() at System.Lazy`1.LazyInitValue() at System.Data.Entity.Internal.LazyInternalContext.InitializeContext() at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() at System.Data.Entity.Internal.Linq.InternalSet`1.get_Provider() at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source) --- End of inner exception stack trace --- at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct&amp; sig, MethodAttributes methodAttributes, RuntimeType typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USDiego Mijelshon
    1. USDiego Mijelshon
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POEF Code First CTP5 - Using the name of the property as column name for foreign key
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POEF Code First CTP5 - Using the name of the property as column name for foreign key
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POEF Code First CTP5 - Using the name of the property as column name for foreign key
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload