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MySQL Entity Framework Migrations

原文 2013-06-18 11:08:38 6 1 c#/ mysql/ entity-framework/ code-first

we tried to implement migrations for our code first EF5 MySQL project. But when we run the update-database command in the package manager, we get a weird error:

Anyone any idea why??

System.Data.ProviderIncompatibleException: The provider did not return a ProviderManifest instance. ---> System.ArgumentException: Could not determine storage version; a valid storage connection or a version hint is required. at System.Data.SqlClient.SqlVersionUtils.GetSqlVersion(String versionHint) at System.Data.SqlClient.SqlProviderManifest..ctor(String manifestToken) at System.Data.SqlClient.SqlProviderServices.GetDbProviderManifest(String versionHint) at System.Data.Common.DbProviderServices.GetProviderManifest(String manifestToken) --- End of inner exception stack trace --- at System.Data.Common.DbProviderServices.GetProviderManifest(String manifestToken) at System.Data.Entity.Migrations.Sql.SqlServerMigrationSqlGenerator.Generate(IEnumerable 1 migrationOperations, String providerManifestToken) at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable 1 operations, Boolean downgrading, Boolean auto) at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration) at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration) a t System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable 1 pendingMigrations, String targetMigrationId, String lastMigrationId) at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable 1 pendingMigrations, String targetMigrationId, String lastMigrationId) at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration) at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration) at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.RunCore() at System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.Run()

1 answers

Try using the MySql.Data.MySqlClient API instead of System.Data.SqlClient. The DLL is located here: http://dev.mysql.com/doc/refman/5.0/en/connector-net-ref-mysqlclient.html

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MySQL Entity Framework Migrations

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1 answers

solution1 1 ACCPTED 2013-06-30 02:10:04

solution1
1 ACCPTED 2013-06-30 02:10:04