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POError in Entity Framework 6.0.2 using "Migration"
 

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  1. POError in Entity Framework 6.0.2 using "Migration"
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    <p>I have a project in ASP.NET MVC 4 and I'm using Entity Framework 6.0.2 for data persistence. After creating all the entities ("Model"), using the Data Annotation, I used "Migration" to create the Pack, but after the database is not criano in SQL Server 2012, the Nuget message "Sequence contains no matching element" is displayed</p> <p>The "connection string" is configured, and the SQL Server 2012 is active.</p> <p>I used the command:</p> <pre><code>PM&gt; Enable-Migrations PM&gt;Checking if the context targets an existing database... System.InvalidOperationException: Sequence contains no matching element at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate) at System.Data.Entity.Utilities.DbProviderManifestExtensions.GetStoreTypeFromName(DbProviderManifest providerManifest, String name) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.Configure(EdmProperty column, EntityType table, DbProviderManifest providerManifest, Boolean allowOverride, Boolean fillFromExistingConfiguration) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.&lt;&gt;c__DisplayClass1.&lt;Configure&gt;b__0(Tuple`2 pm) at System.Data.Entity.Utilities.IEnumerableExtensions.Each[T](IEnumerable`1 ts, Action`1 action) at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.Configure(IEnumerable`1 propertyMappings, DbProviderManifest providerManifest, Boolean allowOverride, Boolean fillFromExistingConfiguration) at System.Data.Entity.ModelConfiguration.Configuration.Types.StructuralTypeConfiguration.ConfigurePropertyMappings(IList`1 propertyMappings, DbProviderManifest providerManifest, Boolean allowOverride) at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.ConfigurePropertyMappings(DbDatabaseMapping databaseMapping, EntityType entityType, DbProviderManifest providerManifest, Boolean allowOverride) at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.Configure(EntityType entityType, DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.ConfigureEntityTypes(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) at System.Data.Entity.DbModelBuilder.Build(DbProviderManifest providerManifest, DbProviderInfo providerInfo) at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection) at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext) at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input) at System.Data.Entity.Internal.LazyInternalContext.InitializeContext() at System.Data.Entity.Internal.LazyInternalContext.get_ModelBeingInitialized() at System.Data.Entity.Infrastructure.EdmxWriter.WriteEdmx(DbContext context, XmlWriter writer) at System.Data.Entity.Utilities.DbContextExtensions.&lt;&gt;c__DisplayClass1.&lt;GetModel&gt;b__0(XmlWriter w) at System.Data.Entity.Utilities.DbContextExtensions.GetModel(Action`1 writeXml) at System.Data.Entity.Utilities.DbContextExtensions.GetModel(DbContext context) at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext) at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration) at System.Data.Entity.Migrations.Design.MigrationScaffolder..ctor(DbMigrationsConfiguration migrationsConfiguration) at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.Run() at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate) at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate) at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner) at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldInitialCreate(String language, String rootNamespace) at System.Data.Entity.Migrations.EnableMigrationsCommand.&lt;&gt;c__DisplayClass2.&lt;.ctor&gt;b__0() at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command) Sequence contains no matching element </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USalbertjan
    1. USgabrielhws
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
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      1. POError in Entity Framework 6.0.2 using "Migration"
      1. USgabrielhws
      1. VTFavorite
    1. CO`Eneble-Migrations` I hope that was a copy-paste fail or a typo on here
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      1. POError in Entity Framework 6.0.2 using "Migration"
      1. USThewads
    2. COAre you migrating any data over from one version to another? If so, could you please post that code?
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      1. POError in Entity Framework 6.0.2 using "Migration"
      1. USIronMan84
    3. COThis looks like a bug to me - can you file this using https://entityframework.codeplex.com/WorkItem/Create ? Please provide a repro.
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      1. POError in Entity Framework 6.0.2 using "Migration"
      1. USPawel
 

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