在 IdentityServer4IdentityCore 快速入门中更新数据库

Question

我有一个 asp.net mvc 项目运行和另一个 IdentityServer4（包括 Identity Core 支持的快速入门），但我无法更新数据库，也无法对其进行播种。我正在与 Core 合作。

所以首先，我无法更新 de DB，我收到了这个错误：

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.

第二件事，我意识到 startup.cs 中的种子方法不起作用，种子 return 是错误的

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;
            }

我不知道是否有人已经使用过该教程，但非常感谢您的帮助 :p Thx

Answer 1

我认为您需要删除数据库并重新创建它，然后才能正常工作。

这个 question 的答案很好地总结了 EntityFramework 内核将给您带来的生产痛苦。

在 IdentityServer4IdentityCore 快速入门中更新数据库

Updating Database in IdentityServer4IdentityCore Quickstart

c#

asp.net-identity

identityserver4