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- Unhandled Exception: System.Data.SqlClient.SqlException: Introducing FOREIGN KEY constraint 'FK_dbo.Homework_dbo.Courses_CourseID' on table 'Homework
- may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.
- Could not create constraint or index. See previous errors.
- at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean 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 bulkCo
- yHandler, TdsParserStateObject stateObj, Boolean& dataReady)
- at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
- at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeou
- , Boolean asyncWrite)
- at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
- at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<NonQuery>b__0(DbCommand t, DbCommandInterceptionContext`1 c)
- at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 opera
- ion, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
- at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.NonQuery(DbCommand command, DbCommandInterceptionContext interceptionContext
- at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteNonQuery()
- at System.Data.Entity.Migrations.DbMigrator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext int
- rceptionContext)
- at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbTransaction transaction, DbInterception
- ontext interceptionContext)
- at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection)
- at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClass30.<ExecuteStatements>b__2e()
- at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()
- at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
- at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
- at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements, DbTransaction existingTransaction)
- at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements)
- at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, IEnumerable`1 s
- stemOperations, Boolean downgrading, Boolean auto)
- at System.Data.Entity.Migrations.DbMigrator.AutoMigrate(String migrationId, VersionedModel sourceModel, VersionedModel targetModel, Boolean downgr
- ding)
- at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
- at System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration)
- at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClassc.<Update>b__b()
- at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
- at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
- at System.Data.Entity.MigrateDatabaseToLatestVersion`2.InitializeDatabase(TContext context)
- at System.Data.Entity.Internal.InternalContext.<>c__DisplayClassf`1.<CreateInitializationAction>b__e()
- at System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action)
- at System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization()
- at System.Data.Entity.Internal.LazyInternalContext.<InitializeDatabase>b__4(InternalContext c)
- at System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input)
- at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action)
- at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase()
- 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_InternalContext()
- at System.Data.Entity.Internal.Linq.InternalSet`1.ActOnSet(Action action, EntityState newState, Object entity, String methodName)
- at System.Data.Entity.Internal.Linq.InternalSet`1.Add(Object entity)
- at System.Data.Entity.DbSet`1.Add(TEntity entity)
- at University.Client.Program.FillSomeData() in c:\MyStaff\11.DataBase\HOMEWORK\09.Homework-CodeFirst\University.Client\Program.cs:line 57
- at University.Client.Program.Main(String[] args) in c:\MyStaff\11.DataBase\HOMEWORK\09.Homework-CodeFirst\University.Client\Program.cs:line 22
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