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respostas

Nao consegui dar update-database

Referente ao curso Entity Framework: Banco de dados de forma eficiente, no capítulo Começando com entity framework e atividade Vídeo 2

por Jhones silva gonçalves
| 235.6k xp | 153 posts

Fui dar o update-database conforme video aula e deu esse erro

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Package Manager Console Host Version 3.4.4.1321

Type 'get-help NuGet' to see all available NuGet commands.

PM> Add-Migration criaUsuario
To undo this action, use Remove-Migration.
PM> update-database
System.Data.SqlClient.SqlException (0x80131904): An attempt to attach an auto-named database for file C:\Users\Home\Desktop\Entity\lojaComEntily\lojaComEntily\bin\Debug\loja.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.Open()
   at Microsoft.Data.Entity.Storage.RelationalConnection.Open()
   at Microsoft.Data.Entity.Storage.Internal.SqlServerDatabaseCreator.Exists(Boolean retryOnNotExists)
   at Microsoft.Data.Entity.Storage.Internal.SqlServerDatabaseCreator.Exists()
   at Microsoft.Data.Entity.Migrations.HistoryRepository.Exists()
   at Microsoft.Data.Entity.Migrations.Internal.Migrator.Migrate(String targetMigration)
   at Microsoft.Data.Entity.Design.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType)
   at Microsoft.Data.Entity.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String contextType)
   at Microsoft.Data.Entity.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_1.<.ctor>b__0()
   at Microsoft.Data.Entity.Design.OperationExecutor.OperationBase.Execute(Action action)
ClientConnectionId:5cfa7e12-2e22-4d5c-8d08-25e9b907993a
Error Number:15350,State:1,Class:14
An attempt to attach an auto-named database for file C:\Users\Home\Desktop\Entity\lojaComEntily\lojaComEntily\bin\Debug\loja.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
PM>
8 respostas
por Bruno Paschoali Regis
| 207.6k xp | 320 posts
Software Engineer

Aparentemente, você já tinha tentado rodar o comando e já tinha criado um arquivo com esse nome.

Faz o seguinte, vai no Executar (ou qualquer pasta) e siga esse caminho C:\Users\Home\Desktop\Entity\lojaComEntily\lojaComEntily\bin\Debug\. Dentro dessa pasta, veja se existe o arquivo loja.mdf. Se sim, exclua ele e roda o comando update-database novamente.

por Jhones silva gonçalves
| 235.6k xp | 153 posts

nao tem esse arquivo, eu nao tinha dado esse comando antes

por Jhones silva gonçalves
| 235.6k xp | 153 posts

Alguem pode me ajudar por favor

por Bruno Paschoali Regis
| 207.6k xp | 320 posts
Software Engineer

Acesse o seu app.config e verifique a sua connection string. Ela precisa conter o seguinte: User Instance=True;

Se não tiver, adicione lá depois de algum ponto-e-vírgula e teste novamente.

por Maykon Leyson Silva
| 107.8k xp | 17 posts

Estou tendo o mesmo problema que o Jhones, e eu também nunca havia executado este comando antes. Também não localizei o arquivo loja.mdf na pasta sugerida...

Então segui o conselho de adicionar o "User Instance=True;" a minha connection string; não deu certo. Passei a receber a seguinte mensagem na execução do comando: 

System.Data.SqlClient.SqlException (0x80131904): The user instance login flag is not allowed when connecting to a user instance of SQL Server. The connection will be closed.

E agora, o que eu faço?

por Bruno Paschoali Regis
| 207.6k xp | 320 posts
Software Engineer

Maykon, remova o "User Instance=True" e poste aqui a sua connection string completa, por favor.

por Cássio Leodegário
| 143.6k xp | 17 posts

estou tendo problema com o update-database o erro é o seguinte

System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0.
   at System.Data.Common.DbConnectionOptions.GetKeyValuePair(String connectionString, Int32 currentPosition, StringBuilder buffer, Boolean useOdbcRules, String& keyname, String& keyvalue)
   at System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey)
   at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules)
   at System.Data.SqlClient.SqlConnectionString..ctor(String connectionString)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(DbConnectionPoolKey key, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
   at System.Data.SqlClient.SqlConnection.ConnectionString_Set(DbConnectionPoolKey key)
   at System.Data.SqlClient.SqlConnection.set_ConnectionString(String value)
   at System.Data.SqlClient.SqlConnection..ctor(String connectionString, SqlCredential credential)
   at System.Data.SqlClient.SqlConnection..ctor(String connectionString)
   at Microsoft.Data.Entity.Storage.Internal.SqlServerConnection.CreateDbConnection()
   at Microsoft.Data.Entity.Internal.LazyRef`1.get_Value()
   at Microsoft.Data.Entity.Storage.RelationalConnection.get_DbConnection()
   at Microsoft.Data.Entity.Migrations.Internal.Migrator.Migrate(String targetMigration)
   at Microsoft.Data.Entity.Design.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType)
   at Microsoft.Data.Entity.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String contextType)
   at Microsoft.Data.Entity.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_1.<.ctor>b__0()
   at Microsoft.Data.Entity.Design.OperationExecutor.OperationBase.Execute(Action action)
Format of the initialization string does not conform to specification starting at index 0.
PM>
por Bruno Paschoali Regis
| 207.6k xp | 320 posts
Software Engineer

Oi Cássio.

No seu caso, acredito que sua string de conexão está errada. Você pode postar ela aqui? Se não sabe onde encontrá-la, vá no arquivo Web.config (pelo Visual Studio mesmo) e copie toda a chave <connection>.