在实体属性中使用 NotMapped 属性时，EF7 添加迁移错误

Question

在实体属性中使用 NotMapped 属性时，EF7 添加迁移错误

Ade*_*Tas 5 c# entity-framework entity-framework-core asp.net-core entity-framework-migrations

我无法在实体属性上使用 [NotMapped] 属性，因为迁移添加命令会引发以下错误；

这是我的 POCO；

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Domain.Entities
{
    public partial class Employer
    {
        public int EmployerId { get; set; }
        public bool? Blacklisted { get; set; }
        [NotMapped]
        public int TestProperty { get; set; }
    }
}

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这是我收到的异常消息。

System.ArgumentNullException: Value cannot be null.
Parameter name: navigation
   at Microsoft.Data.Entity.Utilities.Check.NotNull[T](T value, String parameterName)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnNavigationAdded(InternalRelationshipBuilder relationshipBuilder, Navigation navigation)
   at Microsoft.Data.Entity.Metadata.Internal.InternalRelationshipBuilder.Relationship(InternalEntityTypeBuilder principalEntityTypeBuilder, InternalEntityTypeBuilder dependentEntityTypeBuilder, String navigationToPrincipalName, String navigationToDependentName, IReadOnlyList`1 dependentProperties, IReadOnlyList`1 principalProperties, Nullable`1 isUnique, Nullable`1 isRequired, Nullable`1 deleteBehavior, Boolean strictPrincipal, Boolean oldRelationshipInverted, String oldNavigationToPrincipalName, String oldNavigationToDependentName, ConfigurationSource configurationSource, Boolean runConventions)
   at Microsoft.Data.Entity.Metadata.Internal.InternalRelationshipBuilder.ReplaceForeignKey(InternalEntityTypeBuilder principalEntityTypeBuilder, InternalEntityTypeBuilder dependentEntityTypeBuilder, String navigationToPrincipalName, String navigationToDependentName, IReadOnlyList`1 dependentProperties, IReadOnlyList`1 principalProperties, Nullable`1 isUnique, Nullable`1 isRequired, Nullable`1 deleteBehavior, Boolean strictPrincipal, Boolean oldRelationshipInverted, ConfigurationSource configurationSource, Boolean runConventions)
   at Microsoft.Data.Entity.Metadata.Internal.InternalRelationshipBuilder.ReplaceForeignKey(ConfigurationSource configurationSource, InternalEntityTypeBuilder principalEntityTypeBuilder, InternalEntityTypeBuilder dependentEntityTypeBuilder, String navigationToPrincipalName, String navigationToDependentName, IReadOnlyList`1 dependentProperties, IReadOnlyList`1 principalProperties, Nullable`1 isUnique, Nullable`1 isRequired, Nullable`1 deleteBehavior, Boolean strictPrincipal, Boolean oldRelationshipInverted, Boolean runConventions)
   at Microsoft.Data.Entity.Metadata.Internal.InternalRelationshipBuilder.Navigations(String navigationToPrincipalName, String navigationToDependentName, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalEntityTypeBuilder.Navigations(InternalRelationshipBuilder relationship, String navigationToPrincipalName, String navigationToDependentName, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalEntityTypeBuilder.Relationship(InternalEntityTypeBuilder targetEntityTypeBuilder, PropertyInfo navigationToTarget, PropertyInfo inverseNavigation, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.RelationshipDiscoveryConvention.FindRelationshipCandidates(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.RelationshipDiscoveryConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.RelationshipDiscoveryConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, String ignoredMemberName)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeMemberIgnored(InternalEntityTypeBuilder entityTypeBuilder, String ignoredMemberName)
   at Microsoft.Data.Entity.Metadata.Internal.InternalEntityTypeBuilder.Ignore(String memberName, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NotMappedMemberAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.InversePropertyAttributeConvention.Apply(InternalEntityTypeBuilder entityTypeBuilder, PropertyInfo navigationPropertyInfo, InversePropertyAttribute attribute)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.NavigationAttributeEntityTypeConvention`1.Apply(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Conventions.Internal.ConventionDispatcher.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.OnEntityTypeAdded(InternalEntityTypeBuilder entityTypeBuilder)
   at Microsoft.Data.Entity.Metadata.Internal.MetadataDictionary`2.GetOrAdd(Func`1 getKey, Func`1 createKey, Func`2 createValue, Func`2 onNewKeyAdded, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource)
   at Microsoft.Data.Entity.ModelBuilder.Entity(Type type)
   at Microsoft.Data.Entity.Infrastructure.ModelSource.FindSets(ModelBuilder modelBuilder, DbContext context)
   at Microsoft.Data.Entity.Infrastructure.ModelSource.CreateModel(DbContext context, IConventionSetBuilder conventionSetBuilder, IModelValidator validator)
   at Microsoft.Data.Entity.Infrastructure.ModelSource.<>c__DisplayClass8_0.<GetModel>b__0(Type k)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Data.Entity.Infrastructure.ModelSource.GetModel(DbContext context, IConventionSetBuilder conventionSetBuilder, IModelValidator validator)
   at Microsoft.Data.Entity.Internal.DbContextServices.CreateModel()
   at Microsoft.Data.Entity.Internal.LazyRef`1.get_Value()
   at Microsoft.Data.Entity.Internal.DbContextServices.get_Model()
   at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.<>c.<AddEntityFramework>b__0_5(IServiceProvider p)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.FactoryService.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.ScopedCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.<>c__DisplayClass12_0.<RealizeService>b__0(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetService[T](IServiceProvider provider)
   at Microsoft.Data.Entity.Design.Internal.DesignTimeServicesBuilder.<>c__DisplayClass7_0.<ConfigureContextServices>b__8(IServiceProvider _)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.FactoryService.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.TransientCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ConstructorCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.TransientCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.<>c__DisplayClass12_0.<RealizeService>b__0(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Data.Entity.Design.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)
   at Mic

Answer 1

Don*_*ato 4

尝试使用 Fluent-API

modelBuilder.Entity<Employer>().Ignore(e => e.TestProperty);

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