Updating Database in IdentityServer4IdentityCore Quickstart

Question

I have an asp.net mvc project running with an another IdentityServer4 (Quickstart including Identity Core support) and I just Can't update the Database, either seed it. I'm working with Core.

I followed this tuto

So first, I'm not able to update de DB, I got this error :

System.InvalidOperationException: To change the IDENTITY property of a column, the column needs to be dropped and recreated. at Microsoft.EntityFrameworkCore.Migrations.SqlServerMigrationsSqlGenerator.Generate(AlterColumnOperation operation, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.<>c.<.cctor>b__71_4(MigrationsSqlGenerator g, MigrationOperation o, IModel m, MigrationCommandListBuilder b)
at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.Generate(MigrationOperation operation, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.SqlServerMigrationsSqlGenerator.Generate(MigrationOperation operation, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.Generate(IReadOnlyList1 operations, IModel model) at Microsoft.EntityFrameworkCore.Migrations.SqlServerMigrationsSqlGenerator.Generate(IReadOnlyList1 operations, IModel model) at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.GenerateUpSql(Migration migration) at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.<>c__DisplayClass15_2.b__2() at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration) at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0() at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action) To change the IDENTITY property of a column, the column needs to be dropped and recreated.

Second thing, I realised that the seed methode in startup.cs doesn't work, seed return a false

try { var seed = args.Contains("/seed"); if (seed) { args = args.Except(new[] { "/seed" }).ToArray(); }

            var host = CreateHostBuilder(args).Build();

            if (seed)
            {
                Log.Information("Seeding database...");
                var config = host.Services.GetRequiredService<IConfiguration>();
                var connectionString = config.GetConnectionString("DefaultConnection");
                SeedData.EnsureSeedData(connectionString);
                Log.Information("Done seeding database.");
                return 0;
            }

I don't know if someone has already use that tutoriel, but some help will be realy apprecieted :p Thx

Answer 1

I think you need to delete the database and recreate it, then it will work.

The answer to this question pretty sums up the pain and suffering EntityFramework core will give you in production.