Question

当我尝试运行Seed方法时，我运行以下错误消息。

System.Data.Entity.Infrastructure.DbUpdateException：发生错误在更新条目时。有关详细信息，请参阅内部异常---＆GT; System.Data.Entity.Core.UpdateException：发生错误更新条目。有关详细信息，请参阅内部异常---＆GT; System.Data.SqlClient.SqlException：INSERT语句冲突使用FOREIGN KEY约束＆＃34; FK_dbo.Movies_dbo.Genres_GenreId＆＃34;。冲突发生在数据库中＆＃34; C：\用户\ PATH \ SOURCE \ REPOS \ MVCMOVIE \ MVCMOVIE \ APP_DATA \ MOVIES.MDF＆＃34 ;, table＆＃34; dbo.Genres＆＃34;，column＆＃39; Id＆＃39;。声明已经终止。

这是我的Configuration.cs文件

＆＃13;

namespace MvcMovie.Migrations
{
    using MvcMovie.Models;
    using System;
    using System.Data.Entity;
    using System.Data.Entity.Migrations;
    using System.Linq;

    internal sealed class Configuration : DbMigrationsConfiguration<MvcMovie.Models.MovieDBContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = false;
            ContextKey = "MvcMovie.Models.MovieDBContext";
        }

        protected override void Seed(MvcMovie.Models.MovieDBContext context)
        {
            context.Genres.AddOrUpdate(i => i.Title,
                new Genre
                {
                    Title = "Comedy"
                },
                new Genre
                {
                    Title = "Romantic"
                });

            context.Ratings.AddOrUpdate(i => i.Title,
               new Rating
               {
                   Title = "General"
               },
               new MvcMovie.Models.Rating
               {
                   Title = "Parentel guidence"
               });


            context.Movies.AddOrUpdate(i => i.Title,
                new Movie
                {
                    Title = "When Harry Met Sally",
                    ReleaseDate = DateTime.Parse("1989-1-11"),
                    GenreId = 1,
                    RatingId = 1,
                    Price = 7.99M
                },

                 new Movie
                 {
                     Title = "Ghostbusters ",
                     ReleaseDate = DateTime.Parse("1984-3-13"),
                     GenreId = 1,
                     RatingId = 1,
                     Price = 8.99M
                 },

               }
           );

        }
    }
}

＆＃13;

评级和流派在电影表中设置为FK。有没有人之前有这种类型的错误？

该声明已被终止。在System.Data.SqlClient.SqlConnection.OnError（SqlException异常，     布尔值breakConnection，Action 1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction）at     System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning（TdsParserStateObject     stateObj，Boolean callerHasConnectionLock，Boolean asyncClose）at     System.Data.SqlClient.TdsParser.TryRun（RunBehavior runBehavior，     SqlCommand cmdHandler，SqlDataReader dataStream，     BulkCopySimpleResultSet bulkCopyHandler，TdsParserStateObject     stateObj，布尔＆amp; dataReady）at     System.Data.SqlClient.SqlDataReader.TryConsumeMetaData（）at     System.Data.SqlClient.SqlDataReader.get_MetaData（）at     System.Data.SqlClient.SqlCommand.FinishExecuteReader（SqlDataReader ds，     RunBehavior runBehavior，String resetOptionsString，Boolean     isInternal，Boolean forDescribeParameterEncryption）at     System.Data.SqlClient.SqlCommand.RunExecuteReaderTds（的CommandBehavior     cmdBehavior，RunBehavior runBehavior，Boolean returnStream，Boolean     async，Int32超时，任务＆amp; task，Boolean asyncWrite，Boolean inRetry，     SqlDataReader ds，Boolean describeParameterEncryptionRequest）at     System.Data.SqlClient.SqlCommand.RunExecuteReader（的CommandBehavior     cmdBehavior，RunBehavior runBehavior，Boolean returnStream，String     方法，TaskCompletionSource 1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__c(DbCommand t, DbCommandInterceptionContext 1 c）at     System.Data.Entity.Infrastructure.Interception.InternalDispatcher 1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func 3操作，TInterceptionContext interceptionContext，     行动3 executing, Action 3已执行）     System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader（的DbCommand     命令，DbCommandInterceptionContext interceptionContext）at     System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader（的CommandBehavior     行为）     System.Data.Common.DbCommand.ExecuteReader（CommandBehavior behavior）
    在     System.Data.Entity.Core.Mapping.Update.Internal.DynamicUpdateCommand.Execute（Dictionary 2 identifierValues, List 1 generatedValues）at at     System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.Update（）     ---内部异常堆栈跟踪结束---在System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.Update（）     在     System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.b__2（UpdateTranslator     ut）at     System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.Update [T]（T     noChangesResult，Func 2 updateFunction) at System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.Update() at System.Data.Entity.Core.Objects.ObjectContext.<SaveChangesToStore>b__35() at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func 1     func，IDbExecutionStrategy executionStrategy，Boolean     startLocalTransaction，Boolean releaseConnectionOnSuccess）at     System.Data.Entity.Core.Objects.ObjectContext.SaveChangesToStore（SaveOptions     options，IDbExecutionStrategy executionStrategy，Boolean     startLocalTransaction）at     System.Data.Entity.Core.Objects.ObjectContext＆LT;＆GT; c__DisplayClass2a.b__27（）     在     System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute [TResult]（Func键1 operation) at System.Data.Entity.Core.Objects.ObjectContext.SaveChangesInternal(SaveOptions options, Boolean executeInExistingTransaction) at System.Data.Entity.Core.Objects.ObjectContext.SaveChanges(SaveOptions options) at System.Data.Entity.Internal.InternalContext.SaveChanges() --- End of inner exception stack trace --- at System.Data.Entity.Internal.InternalContext.SaveChanges() at System.Data.Entity.Internal.LazyInternalContext.SaveChanges() at System.Data.Entity.DbContext.SaveChanges() at System.Data.Entity.Migrations.DbMigrator.SeedDatabase() at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.SeedDatabase() at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable 1     pendingMigrations，String targetMigrationId，String lastMigrationId）
    在     System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade（IEnumerable`1     pendingMigrations，String targetMigrationId，String lastMigrationId）
    在System.Data.Entity.Migrations.DbMigrator.UpdateInternal（String     targetMigration）     System.Data.Entity.Migrations.DbMigrator＆LT;＆GT; c__DisplayClasse.b__d（）     在     System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists（动作     mustSucceedToKeepDatabase）at     System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists（动作     mustSucceedToKeepDatabase）at     System.Data.Entity.Migrations.DbMigrator.Update（字符串     targetMigration）     System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update（字符串     targetMigration）     System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.RunCore（）     在System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.Run（）

带有FK错误消息的EF Alter表

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