Devart Forums

Hi,
I'm getting exception while creating migration script using such command:
dotnet ef migrations script --startup-project MyApp --context MyAppContext --idempotent --no-transactions --output "MyApp.sql"

Exception first occured after upgrading project to .NET 6 and to newest devart library.

Project references
<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="5.0.12" />
<PackageReference Include="Devart.Data.Oracle" Version="9.14.1382" />
<PackageReference Include="Devart.Data.Oracle.EFCore" Version="9.14.1382" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="5.0.12">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="5.0.12" />
</ItemGroup>

Exception
System.ArgumentNullException: Value cannot be null. (Parameter 'source')
at System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Linq.Enumerable.Select[TSource,TResult](IEnumerable`1 source, Func`2 selector)
at Devart.Common.Entity.Migrations.f.a(DropForeignKeyOperation A_0)
at Devart.Common.Entity.Migrations.f.b(MigrationOperation A_0)
at Devart.Common.Entity.Migrations.f.a(IEnumerable`1 A_0)
at Devart.Common.Entity.Migrations.g.a(IEnumerable`1 A_0, da A_1)
at Devart.Data.Oracle.Entity.Migrations.OracleEntityMigrationSqlGenerator.Generate(IReadOnlyList`1 migrationOperations, IModel model, MigrationsSqlGenerationOptions options)
at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.GenerateUpSql(Migration migration, MigrationsSqlGenerationOptions options)
at Devart.Common.Entity.Migrations.d.a(Migration A_0, MigrationsSqlGenerationOptions A_1)
at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.GenerateScript(String fromMigration, String toMigration, MigrationsSqlGenerationOptions options)
at Devart.Common.Entity.Migrations.d.GenerateScript(String fromMigration, String toMigration, MigrationsSqlGenerationOptions options)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.ScriptMigration(String fromMigration, String toMigration, MigrationsSqlGenerationOptions options, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScriptMigrationImpl(String fromMigration, String toMigration, Boolean idempotent, Boolean noTransactions, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScriptMigration.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)

Thank you for your report. We will notify you when the issue is fixed.

The bug with generating the "Value cannot be null" error when adding or dropping FK via Code-First Migrations in EF Core is fixed. We will notify you when a new public build of dotConnect for Oracle is available for download.

The bug with generating the "Value cannot be null" error when dropping indexes via Code-First Migrations in EF Core is fixed in dotConnect for Oracle v9.16.1434.