Activities of "AI-Bot"

1. Solution

• Why DbMigrator didn’t create the audit DB

  • DbMigrator only runs migrations for DbContexts that:
    • are registered in the solution and
    • have migrations compiled into the assembly and
    • have a configured provider/connection string.
  • If AbpAuditLoggingDbContext has no migrations in your solution, DbMigrator won’t create the database.

• Fix step-by-step

  1. Ensure EF Core provider/config for AbpAuditLoggingDbContext

[DependsOn(
      typeof(Volo.Abp.EntityFrameworkCore.SqlServer.AbpEntityFrameworkCoreSqlServerModule),
      typeof(Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingEntityFrameworkCoreModule)
  )]
  public class YourAppEntityFrameworkCoreModule : AbpModule
  {
      public override void ConfigureServices(ServiceConfigurationContext context)
      {
          Configure<AbpDbContextOptions>(options =>
          {
              // Global default or per-context config
              options.UseSqlServer();

              options.Configure<Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingDbContext>(c =>
              {
                  c.UseSqlServer();
              });
          });
      }
  }

2. Provide a connection string named AbpAuditLogging (or it will fall back to Default)

• appsettings.json (DbMigrator and all hosts that write audit logs):

{
    "ConnectionStrings": {
      "Default": "Server=.;Database=MainDb;Trusted_Connection=True;TrustServerCertificate=true",
      "AbpAuditLogging": "Server=.;Database=AuditDb;Trusted_Connection=True;TrustServerCertificate=true"
    }
  }

3. Add migrations for AbpAuditLoggingDbContext into your migrations project

• Add the AbpAuditLogging.EntityFrameworkCore package reference to the project where you keep migrations (commonly the EFCore or DbMigrator project references it).

• Make sure the project builds and can resolve the context at design-time. Typically you either:

  • run the dotnet ef command in the project that contains the DbContext OR
  • create a design-time factory.

• Example design-time factory (only for migration generation):

using Microsoft.EntityFrameworkCore;
  using Microsoft.EntityFrameworkCore.Design;
  using Microsoft.Extensions.Configuration;
  using System.IO;
  using Volo.Abp.AuditLogging.EntityFrameworkCore;

  public class AbpAuditLoggingDbContextFactory : IDesignTimeDbContextFactory<AbpAuditLoggingDbContext>
  {
      public AbpAuditLoggingDbContext CreateDbContext(string[] args)
      {
          var configuration = new ConfigurationBuilder()
              .SetBasePath(Directory.GetCurrentDirectory())
              .AddJsonFile("appsettings.json", optional: false)
              .AddEnvironmentVariables()
              .Build();

          var builder = new DbContextOptionsBuilder<AbpAuditLoggingDbContext>()
              .UseSqlServer(configuration.GetConnectionString("AbpAuditLogging"));

          return new AbpAuditLoggingDbContext(builder.Options);
      }
  }

• Generate the migrations (run in the project that references Volo.Abp.AuditLogging.EntityFrameworkCore and contains the factory above):

dotnet ef migrations add Init_Audit_Logging --context Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingDbContext

Notes:

• Use the full type name if the short name isn’t found.
• Ensure the startup project specified by --startup-project (if needed) can load your module configuration and has the connection strings.

4. Run DbMigrator once migrations exist

• DbMigrator, by default, discovers and runs all registered IDbSchemaMigrator implementations (including AuditLogging’s). With the migrations compiled, it will create the AuditDb and apply its migrations automatically:

dotnet run --project src/YourApp.DbMigrator

5. Common pitfalls causing “No DbContext named 'AbpAuditLoggingDbContext' was found”

• You ran dotnet ef in a project that does not reference Volo.Abp.AuditLogging.EntityFrameworkCore.
• The context is not discoverable at design-time. Add a design-time factory (shown above), or set --startup-project and run the command from the EFCore project that references the module.
• You used the short context name; prefer the fully-qualified name: Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingDbContext

6. Ensure auditing is enabled and middleware added (for actual runtime logging)

Configure<AbpAuditingOptions>(options =>
  {
      options.IsEnabled = true;
      options.EntityHistorySelectors.AddAllEntities();
  });

  public override void OnApplicationInitialization(ApplicationInitializationContext context)
  {
      var app = context.GetApplicationBuilder();
      app.UseAuditing();
  }

• Summary
  • Add the AuditLogging EFCore module and provider config.
  • Add/use the AbpAuditLogging connection string (or it falls back to Default).
  • Create migrations for AbpAuditLoggingDbContext (design-time factory often required).
  • Run DbMigrator; it will then create and migrate the separate audit DB.

2. Sources

• EF Core integration and per-context provider configuration:
  • https://docs.abp.io/en/abp/latest/Entity-Framework-Core
• Connection strings (default and per-module names):
  • https://abp.io/docs/latest/framework/fundamentals/connection-strings
• Audit Logging module (usage and DB objects):
  • https://docs.abp.io/en/abp/latest/Modules/Audit-Logging
• Support thread confirming provider config and UseAuditing requirement:
  • https://abp.io/support/questions/6880

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Solution

• Short answer
  • Use the abp-modal options input to pass ng-bootstrap’s NgbModalOptions and set a unique windowClass for that one modal. Then, add a global style targeting that specific windowClass to control the width. This changes only that modal.
• How to do it
  1. Set a unique windowClass via options on your abp-modal

<abp-modal
    [(visible)]="isOpen"
    [options]="{ windowClass: 'my-wide-modal', size: 'xl' }"
  >
    <ng-template #abpHeader>My Wide Editor</ng-template>
    <ng-template #abpBody> ... complex content ... </ng-template>
    <ng-template #abpFooter>
      <abp-button (click)="isOpen = false">Close</abp-button>
    </ng-template>
  </abp-modal>

Notes:

• options is forwarded to NgbModal.open(...) internally, so you can use any NgbModalOptions, including windowClass, size, centered, scrollable, keyboard, etc.
• size can be set here as well, but for a near-full-width modal you’ll typically override width via CSS.

2. Add a global style that targets only that modal window Put this in styles.scss (or global theme stylesheet):

ngb-modal-window.my-wide-modal .modal-dialog {
    max-width: 90vw !important; /* or a fixed px width */
    width: 90vw;                /* ensure it expands */
    margin: 1.5rem auto;        /* optional: adjust centering/margins */
  }

  /* Optionally control body height/scrolling if needed */
  ngb-modal-window.my-wide-modal .modal-content {
    height: calc(100vh - 3rem);
  }

Why global? NgbModal renders outside the component tree, so ViewEncapsulation styles won’t reach it. A unique windowClass ensures the rule applies only to that single modal, not globally.

• About dialogClass/modalClass inputs

  • abp-modal does not expose dialogClass or modalClass inputs; hence the Angular template error you saw. Use options.windowClass instead.

• Is passing custom NgbModal options supported?

  • Yes. abp-modal exposes an options input of type NgbModalOptions and spreads it into NgbModal.open(...). You can set windowClass, size, centered, scrollable, keyboard, etc., and they will be respected.

• If you prefer a CSS-only approach without options

  • You can still set the unique class via options (recommended), then handle all sizing purely in CSS as shown above. Avoid styling only by Bootstrap’s modal-xl class globally, since that affects all modals.

• Recommended alternative for very complex editors

  • If the content requires near full-page experience, consider:
    • Routing to a dedicated page for the editor (best UX for heavy forms/tables).
    • Or, still use abp-modal with windowClass and add responsive CSS as above.

2. Sources

• ABP Angular Modal component forwards options (NgbModalOptions) including windowClass/size to NgbModal:
  • https://github.com/abpframework/abp/blob/dev/npm/ng-packs/packages/theme-shared/src/lib/components/modal/modal.component.ts
• ABP Angular Modal docs:
  • https://abp.io/docs/latest/framework/ui/angular/modal

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Solution

• What happened

  • ABP Commercial packages perform a license check at application startup. If the local ABP CLI session is missing/expired, protected packages fail the check and the application stops. The CLI shows a clear message (“You need to log in using abp login …”), but when only running the app you may not see that message in your console/logs depending on environment/logging configuration.

• Immediate fix (so you can continue working)

  1. Log in to ABP Platform via CLI:
     • abp login
     • or abp login --device
     • or abp login <username> -p ****** --password
  2. Restart your application.

• Make the failure visible next time

  • Ensure the license error is written to logs:
    • Set logging level to Information (or lower) for startup in your host project so the “ABP-LIC-ERROR” line is captured by your logger (console, Serilog, Application Insights, etc.).
  • If you use containers or services that don’t show interactive console:
    • Run abp login during your build/CI agent user context before publishing or running the app.
    • Or run abp login --device in a provision step and persist the tool’s user profile for the service account.

• CI/CD and production guidance

  • Never rely on an interactive login at deploy time. Use one of:
    • Perform abp login in the build agent account and publish artifacts from that agent.
    • For container images, run abp login in the Docker build (multi-stage) using the same user that runs the app, then copy the tool’s persisted credentials to the final image layer.
  • If you see “ABP-LIC-ERROR - License check failed … You need to log in using the command abp login <username>”: this is the definitive signal that the environment running the app lacks a valid ABP CLI session. Fix by logging in as the account under which the app runs.

• Feature request acknowledgement

  • Your request for a specific, explicit runtime exception (e.g., AbpSessionException with a “You must login to your ABP account…” message) makes sense. Today, the clear prompt is emitted by the CLI or appears as a license error log line. I’ve noted your suggestion so it can be considered to surface a dedicated, high-visibility exception including remediation steps when license validation fails at startup.

2. Sources

• ABP CLI login command and session requirement:
  • https://abp.io/docs/latest/cli/

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Solution

• The AbpAuditLoggingDbContext uses a predefined connection string name: "AbpAuditLogging". If you don’t define it, it falls back to the "Default" connection string.

• To store audit logs in a separate database, add a dedicated connection string named AbpAuditLogging in your configuration. No extra wiring to the DbContext is needed beyond using the EF Core provider for that context.

Steps:

1. Add connection strings

{
  "ConnectionStrings": {
    "Default": "Server=.;Database=MainDb;Trusted_Connection=True;TrustServerCertificate=true",
    "AbpAuditLogging": "Server=.;Database=AuditDb;Trusted_Connection=True;TrustServerCertificate=true"
  }
}

2. Ensure EF Core provider is configured for the audit DbContext

[DependsOn(
    typeof(Volo.Abp.EntityFrameworkCore.SqlServer.AbpEntityFrameworkCoreSqlServerModule),
    typeof(Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingEntityFrameworkCoreModule)
)]
public class YourAppEntityFrameworkCoreModule : AbpModule
{
    public override void ConfigureServices(ServiceConfigurationContext context)
    {
        Configure<AbpDbContextOptions>(options =>
        {
            // Global provider or per-context
            options.UseSqlServer();

            options.Configure<Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingDbContext>(c =>
            {
                c.UseSqlServer();
            });
        });
    }
}

3. (Optional) If you use connection string grouping/mapping

• Not required just to separate the DB. Defining "AbpAuditLogging" is sufficient because the module resolves that name automatically. Use AbpDbConnectionOptions mapping only if you need advanced grouping scenarios.

Why this works:

• The Audit Logging module resolves connection strings by the name "AbpAuditLogging". If it exists, AbpAuditLoggingDbContext uses it; otherwise it uses "Default". You don’t need to set a custom name or write a custom IAuditingStore for a different database.

2. Sources

• Connection strings (default and per-module names):
  • https://abp.io/docs/latest/framework/fundamentals/connection-strings
• EF Core integration and per-DbContext provider configuration:
  • https://docs.abp.io/en/abp/latest/Entity-Framework-Core
• Audit Logging module (connection string name and fallback behavior):
  • https://docs.abp.io/en/abp/latest/Modules/Audit-Logging

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Solution

• You’re right: AbpDbConnectionOptions.Databases.Configure(...).MappedConnections.Add(...) expects connection name strings, not DbContext types. Use the module’s connection name for Audit Logging.

• Correct configuration for storing Audit Logs in a separate database:

  1. Define a dedicated connection string name (e.g., "AuditLogging") and set it in appsettings.json:

{
  "ConnectionStrings": {
    "Default": "Server=.;Database=MainDb;Trusted_Connection=True;TrustServerCertificate=true",
    "AuditLogging": "Server=.;Database=AuditDb;Trusted_Connection=True;TrustServerCertificate=true"
  }
}

2. Map the Audit Logging module’s connection name to "AuditLogging":

Configure<AbpDbConnectionOptions>(options =>
{
    options.Databases.Configure("AuditLogging", db =>
    {
        // Map module connection names (strings), not types
        db.MappedConnections.Add("AbpAuditLogging");
    });
});

3. Ensure EF Core uses SQL Server for the audit DbContext:

Configure<AbpDbContextOptions>(options =>
{
    options.UseSqlServer();
    options.Configure<Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingDbContext>(opt =>
    {
        opt.UseSqlServer();
    });
});

4. Make sure the Audit Logging EF Core module is added:

[DependsOn(
    typeof(Volo.Abp.EntityFrameworkCore.SqlServer.AbpEntityFrameworkCoreSqlServerModule),
    typeof(Volo.Abp.AuditLogging.EntityFrameworkCore.AbpAuditLoggingEntityFrameworkCoreModule)
)]
public class YourAppEntityFrameworkCoreModule : AbpModule
{
}

• Why this works:
  • ABP resolves connection strings by name. The Audit Logging EFCore integration uses the connection name "AbpAuditLogging". Mapping that name to your "AuditLogging" connection groups the audit module to your AuditDb, while other modules fall back to Default. No custom IAuditingStore is needed.

2. Sources

• ABP Connection Strings (mapping module connections to a grouped connection):
  • https://abp.io/docs/latest/framework/fundamentals/connection-strings
• ABP EF Core integration (per-DbContext provider configuration):
  • https://docs.abp.io/en/abp/latest/Entity-Framework-Core
• ABP Audit Logging module:
  • https://docs.abp.io/en/abp/latest/Modules/Audit-Logging

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Solution

• Use a single DbMigrator to migrate both databases (your main “Default” DB and the separate Audit Logging DB). ABP’s DbMigrator already supports multiple DbContexts and multiple databases; you only need to map the AbpAuditLoggingDbContext to its own connection and ensure its migrations are included.

• Steps:

  1. Configure connections and mapping
  • appsettings.json (DbMigrator and any process that runs migrations):

{
    "ConnectionStrings": {
      "Default": "Server=.;Database=MainDb;Trusted_Connection=True;TrustServerCertificate=true",
      "AuditLogging": "Server=.;Database=AuditDb;Trusted_Connection=True;TrustServerCertificate=true"
    }
  }

• In your EF Core module (e.g., YourApp.EntityFrameworkCoreModule):

[DependsOn(
      typeof(AbpEntityFrameworkCoreSqlServerModule),
      typeof(AbpAuditLoggingEntityFrameworkCoreModule)
  )]
  public class YourAppEntityFrameworkCoreModule : AbpModule
  {
      public override void ConfigureServices(ServiceConfigurationContext context)
      {
          Configure<AbpDbContextOptions>(options =>
          {
              options.UseSqlServer();
              options.Configure<AbpAuditLoggingDbContext>(c => c.UseSqlServer());
          });

          Configure<AbpDbConnectionOptions>(options =>
          {
              options.Databases.Configure("AuditLogging", db =>
              {
                  db.MappedConnections.Add(typeof(AbpAuditLoggingDbContext));
              });
          });
      }
  }

2. Include migrations for both DbContexts

• Create migrations for your main app DbContext as usual.
• Create migrations for AbpAuditLoggingDbContext in your migrations project (or unified EFCore project), for example:

dotnet ef migrations add "Init_Audit_Logging" --context AbpAuditLoggingDbContext

Ensure the design-time factory (IDesignTimeDbContextFactory) for AbpAuditLoggingDbContext reads the “AuditLogging” connection.

3. Make the DbMigrator run all contexts

• The standard ABP DbMigrator template iterates registered IDbSchemaMigrator implementations for each context. Because AbpAuditLoggingEntityFrameworkCoreModule registers its DbSchemaMigrator for AbpAuditLoggingDbContext, the single DbMigrator will:
  • Migrate Default (main) database.
  • Then migrate the AuditLogging database.
• No second DbMigrator is needed.

4. Run the single migrator

cd your-solution/src/YourApp.DbMigrator
  dotnet run

It should apply migrations to MainDb and AuditDb respectively.

• Notes:
  • Do not call options.UseSqlServer() globally for all contexts if you later need a different provider; instead use options.Configure<TDbContext>(...) per context as above (ABP supports per-DbContext provider selection).
  • If you prefer to group by name instead of type mapping, you can map via the connection name “AbpAuditLogging” and create that connection string; the key is that AbpAuditLoggingDbContext resolves to a distinct connection.

2. Sources

• Validated: EF Core integration and per-context database mapping
  • https://docs.abp.io/en/abp/latest/Entity-Framework-Core
• Validated: Connection string grouping and mapping with AbpDbConnectionOptions
  • https://abp.io/docs/latest/framework/fundamentals/connection-strings
• Validated: Multiple DbContexts and providers discussion (shows per-context configuration approach)
  • https://abp.io/support/questions/3579

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Project creation error (file in use: etc/docker/containers/postgresql.yml)

Cause

• During Microservice solution generation, ABP Studio writes many files in parallel (Parallel.ForEachAsync). On Windows, some antivirus/indexer tools (Defender, 3rd‑party AV, cloud sync), or Explorer/Editor plugins can briefly lock newly created files, which can lead to intermittent IOException “file is being used by another process” when Studio tries to write docker files (e.g., postgresql.yml).

Fix/Workarounds

• Exclude the solution root from antivirus and real‑time indexers (Windows Defender, 3rd‑party AV, OneDrive/Dropbox/Google Drive sync, corporate DLP).
• Avoid opening the target folder in Explorer/IDE while creation is running.
• Create to a short local path (e.g., C:\Dev\MySolution) to avoid long paths/slow sync.
• Re-run the creation once; Studio is idempotent for file writes and will complete remaining files if the lock disappears.
• If it still recurs, temporarily disable “Run the initial tasks” and run them after creation completes from Studio or CLI; this reduces concurrent activity while files are being generated.

2. ABP Suite generation breaks Microservice build (unresolved using MeinTestDemoWerk.ProcessService.Processes in ProcessServiceDbContext)

Cause

• Suite generated an import to the domain namespace where your new entity should reside (e.g., MeinTestDemoWerk.ProcessService.Processes). This happens when the entity was configured under a specific namespace/Module name in Suite, but the physical file of the entity wasn’t created in that namespace/project (or the project didn’t compile before migration), so the DbContext import points to a non-existing namespace.

Checklist to fix

• Ensure the entity class exists in the Domain project under the same namespace Suite expects:

  • Project: MeinTestDemoWerk.ProcessService.Domain

  • Folder: Processes

  • File example: using Volo.Abp.Domain.Entities.Auditing;

    namespace MeinTestDemoWerk.ProcessService.Processes { public class Process : FullAuditedAggregateRoot<Guid> { public string Name { get; set; } // other props... } }

• Ensure the Entity Framework Core project references the Domain project:
  • MeinTestDemoWerk.ProcessService.EntityFrameworkCore -> reference -> MeinTestDemoWerk.ProcessService.Domain
• Make sure your ProcessServiceDbContext has the correct model configuration:
  • Add DbSet if needed: public DbSet<Process> Processes { get; set; }
  • In OnModelCreating: builder.Entity<Process>(b => { b.ToTable(ProcessServiceDbProperties.DbTablePrefix + "Processes", ProcessServiceDbProperties.DbSchema); b.ConfigureByConvention(); b.Property(x => x.Name).IsRequired().HasMaxLength(128); });
• Verify namespace consistency:
  • If Suite shows “Root Namespace” or “Entity Namespace” as MeinTestDemoWerk.ProcessService.Processes, keep the entity file’s namespace identical.
  • If you prefer a different namespace, update it in Suite’s Entity settings before Save & Generate so Suite won’t re-add the old using line.
• Build once before running Suite migration:
  • dotnet build MeinTestDemoWerk.ProcessService.sln
  • Fix any compile errors; Suite’s migration step runs dotnet build and fails otherwise.
• Clean and regenerate if it got out of sync:
  • Close IDEs; run: dotnet clean dotnet restore dotnet build
  • Then in Suite, open the Microservice, Save & Generate again.

Notes

• Suite’s “Save & Generate” will re-insert the using based on the configured entity namespace. The correct fix is to align the entity’s actual namespace and project structure with what Suite expects, not just deleting the using.
• If you added the microservice during solution creation, ensure its module projects are loaded and compile independently (Domain, Application, EFCore). Run migrations only after a successful build.

3. Environment/version notes

• Your .NET SDK shows “10”. ABP 10.x supports .NET 8/9 (and newer as released), but ensure your solution’s TargetFrameworks match the generated ones. Having only a .NET “preview” SDK without the intended target may break builds. Verify global.json (if present) and installed SDKs with dotnet --list-sdks.
• PostgreSQL 16 is supported with EF Core provider; ensure the Npgsql packages match ABP’s version requirements (the generated solution manages this).

If issues persist

• Generate a minimal microservice (no Aspire, fewer optional modules) to see if the file lock disappears; this helps determine if locks are due to extra assets (Aspire/docker) created in parallel.
• Share the exact entity definition you created in Suite (name, folder/namespace set in Suite) and confirm the entity file exists in the Domain project under that namespace; mismatches there are the typical reason for the unresolved using line.

Sources

• ABP Studio overview
  • https://docs.abp.io/en/abp/latest/Studio/overview
• ABP Suite overview
  • https://docs.abp.io/en/abp/latest/Suite/index
• ABP Module System
  • https://abp.io/docs/latest/framework/architecture/modularity/basics

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

1. Solution Short answer: Yes, but you must design it explicitly. ABP doesn’t provide an “offline mode” out of the box. For a tiered Blazor + SQL Server solution, you can support “no-connection” operation by running a local “edge host” that exposes the same HTTP API contracts and uses a local database (e.g., SQLite). When connectivity returns, you sync data with the central server.

Key steps:

• Keep API contracts identical

  • Put your application service interfaces in the HttpApi.Client project and make sure all endpoints are defined by Application Services that implement IApplicationService and are exposed by your HttpApi.Host.
  • Your Blazor front end should only call those interfaces via ABP’s dynamic C# API clients. That way, when you switch between remote and local hosts, the client stays the same.

• Provide two hosts with the same API surface

  • Central host (already exists): HttpApi.Host + SQL Server.
  • Local host (new): a lightweight ASP.NET Core host that depends on the same Application layer but configured with a local DB provider (e.g., EF Core + SQLite) and runs alongside the Blazor app on the client machine (or inside the same machine/VM). Example module dependency:

[DependsOn(
        typeof(MyProjectApplicationModule),
        typeof(MyProjectHttpApiModule),
        typeof(AbpAspNetCoreMvcModule)
    )]
    public class MyProjectLocalHostModule : AbpModule
    {
        public override void ConfigureServices(ServiceConfigurationContext context)
        {
            // Configure EF Core to SQLite for local store
            Configure<AbpDbConnectionOptions>(options =>
            {
                options.ConnectionStrings.Default = "Data Source=local.db";
            });
        }
    }

• Switch endpoints based on connectivity
  • Configure the Blazor app’s RemoteServiceOptions to point to the “remote” host normally, and to the “local” host when offline.
  • You can detect connectivity and toggle BaseUrls at startup or on-the-fly:

public override void PreConfigureServices(ServiceConfigurationContext context)
    {
        PreConfigure<AbpRemoteServiceOptions>(options =>
        {
            var isOffline = /* your connectivity check */;
            options.RemoteServices.Default = new RemoteServiceConfiguration(
                baseUrl: isOffline ? "https://localhost:5005" : "https://central-host.example.com"
            );
        });
    }

• Optionally, add Polly retry logic to smooth transitions.

• Use a local EF Core provider

  • For the local host, configure DbContext to SQLite, file-based, to avoid SQL Server dependency offline.
  • Keep the same DbContext and entities so the API behaves identically.

• Authentication considerations

  • If you use OpenIddict/Identity on the central host, offline login won’t work by default. For offline, consider:
    • Caching auth tokens for a grace period, or
    • Running a minimal local auth with the same users/permissions synced periodically.
  • This is a product decision: offline mode typically implies limited or cached authorization.

• Data synchronization (when back online)

  • Implement a sync process between local and central databases:
    • Track changes locally (Created/Updated/Deleted timestamps or change tracking tables).
    • On reconnection, push local changes via the same application services, then pull server changes.
    • Handle conflict resolution (server-wins, client-wins, or merge).
  • You can use background workers (IHostedService) on the local host to attempt sync periodically when connectivity is restored.

• Caching and queues

  • Prefer local implementations when offline:
    • IDistributedCache → use a local provider (e.g., Memory) for the local host.
    • Distributed event bus → use local event bus (no broker) on the local host, and publish to the server only during sync phases.

• Blazor hosting choice

  • Blazor Server requires a live SignalR connection to a server. For true offline usage, consider:
    • Running the local host on the same machine and connecting Blazor Server to it when offline, or
    • Moving to Blazor WebAssembly (PWA) for the UI so the UI itself loads offline and calls the local host API.
  • If you stay with Blazor Server, the “server” must be reachable locally during offline; that means your local host must be running and the client connects to it.

• Minimal local host example

public class Program
  {
      public static async Task Main(string[] args)
      {
          var builder = WebApplication.CreateBuilder(args);

          // SQLite connection for local mode
          builder.Services.Configure<AbpDbConnectionOptions>(options =>
          {
              options.ConnectionStrings.Default = builder.Configuration.GetConnectionString("Default");
          });

          await builder.AddApplicationAsync<MyProjectLocalHostModule>();
          var app = builder.Build();

          await app.InitializeApplicationAsync();
          app.MapControllers();
          await app.RunAsync();
      }
  }

appsettings.json (local): { "ConnectionStrings": { "Default": "Data Source=local.db" }, "App": { "SelfUrl": "https://localhost:5005" } }

What ABP gives you vs what you must implement

• ABP provides: modular layers, dynamic C# API clients, EF Core integration, background workers, caching abstraction.
• You must implement: the local host, endpoint switching, offline auth strategy, and data synchronization logic and conflict handling.

This approach aligns with common ABP conventions, but specific official documentation for an “offline local middleware with identical API + sync back to central SQL Server” is not available.

2. Sources

• ABP Framework GitHub (architecture, dynamic proxies, modules are visible in repo):
  • https://github.com/abpframework/abp

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1. Solution Below is a definitive checklist and working setup to make domain/subdomain tenant resolution work with ABP 9.1.x for Blazor Interactive (WebAssembly-only) and a separated Auth Server (default OpenIddict). It addresses both backend resolution and the Blazor WASM client side, including environment-based subdomains like app-qa.example.com, app-pre.example.com, app.example.com with tenant1.app-qa.example.com, etc.

A) Backend (HttpApi.Host) – Resolve tenant from subdomain and allow wildcard OpenIddict/redirects

1. Enable wildcard domain support for OpenIddict (required for subdomain tenants)

• In YourHttpApiHostModule.PreConfigureServices:

// using Volo.Abp.OpenIddict.WildcardDomains;
PreConfigure<AbpOpenIddictWildcardDomainOptions>(options =>
{
    options.EnableWildcardDomainSupport = true;
    // Add all authority formats that will be used by the auth server (API host if combined)
    // Example for environments:
    options.WildcardDomainsFormat.Add("https://{0}.app-qa.example.com");
    options.WildcardDomainsFormat.Add("https://{0}.app-pre.example.com");
    options.WildcardDomainsFormat.Add("https://{0}.app.example.com");
    // If your API host is also subdomained (like {0}.api.app-qa.example.com), add those too.
});

2. Add Domain/Subdomain tenant resolver

• In YourHttpApiHostModule.ConfigureServices:

// using Volo.Abp.MultiTenancy;
Configure<AbpTenantResolveOptions>(options =>
{
    // Adjust formats to your real hostnames used for API endpoints receiving requests.
    options.AddDomainTenantResolver("{0}.app-qa.example.com");
    options.AddDomainTenantResolver("{0}.app-pre.example.com");
    options.AddDomainTenantResolver("{0}.app.example.com");
    // If your API host has a different subdomain pattern, add its formats as well.
});

3. If using a separated Auth Server (or validating tokens issued for wildcard domains)

• Configure JWT bearer validation to accept wildcard issuers when you do token validation on gateway/API hosts that are not the issuer:

// using Owl.TokenWildcardIssuerValidator;
context.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
.AddJwtBearer(options =>
{
    options.Authority = configuration["AuthServer:Authority"]; // Your base authority
    options.RequireHttpsMetadata = true;

    // Allow wildcard issuers for subdomain tenants
    options.TokenValidationParameters.IssuerValidator = TokenWildcardIssuerValidator.IssuerValidator;
    options.TokenValidationParameters.ValidIssuers = new[]
    {
        "https://{0}.app-qa.example.com/",
        "https://{0}.app-pre.example.com/",
        "https://{0}.app.example.com/"
    };
});

4. CORS and Redirect URIs for wildcard subdomains

• Use ABP helpers that support wildcard subdomains for CORS and redirect URI validation:

context.Services.AddAbpStrictRedirectUriValidator();
context.Services.AddAbpClientConfigurationValidator();
context.Services.AddAbpWildcardSubdomainCorsPolicyService();

• In DbMigrator appsettings.json (Identity/OpenIddict client registrations), set RootUrl with {0} placeholder so redirect URIs and post-logout URIs are generated per-tenant:

"IdentityServer": {
  "Clients": {
    "My_Blazor_Wasm": {
      "ClientId": "My_Blazor_Wasm",
      "ClientSecret": "1q2w3e*",
      "RootUrl": "https://{0}.app-qa.example.com"
    }
  }
}

Repeat entries for each environment if you keep per-env DBs; otherwise include each environment’s RootUrl pattern if you use one central auth DB for all envs. Re-run DbMigrator so allowed redirect URIs/CORS origins are updated.

5. Issuer URI when using OpenIddict If you customized IssuerUri earlier, ensure it does not conflict with wildcard expectations. Commonly you don’t set a fixed IssuerUri when using wildcard support; instead rely on AbpOpenIddictWildcardDomainOptions above.

B) Blazor Interactive (WebAssembly-only) – Propagate the current tenant’s subdomain to Authority and BaseUrl

For Blazor WebAssembly, there is no server-side tenant resolver in the UI process. You must dynamically shape the Authority and BaseUrl at startup using the current browser URL. This is documented for Angular and demonstrated for Blazor in community samples. Implement the pattern below:

1. In the Blazor WASM client’s Program.cs/Module.Initialize:

• Read the current origin (builder.HostEnvironment.BaseAddress) and inject the tenant subdomain into the Authority and the RemoteServices BaseUrl by replacing {0}. The key is: never hardcode a single Authority; compute it based on current host.

Example utility methods:

private static readonly string[] ProtocolPrefixes = { "http://", "https://" };

private static string ConvertToTenantSubDomain(WebAssemblyHostBuilder builder, string configPath)
{
    var baseUrl = builder.HostEnvironment.BaseAddress; // e.g., https://tenant1.app-qa.example.com/
    var configUrl = builder.Configuration[configPath];  // e.g., "https://{0}.api.app-qa.example.com"
    return configUrl.Replace("{0}.", GetTenantNamePrefix(baseUrl));
}

// Returns "tenant1." or "" when no tenant
private static string GetTenantNamePrefix(string baseUrl)
{
    var hostName = baseUrl.RemovePreFix(ProtocolPrefixes); // tenant1.app-qa.example.com/
    var host = hostName.TrimEnd('/').Split('/')[0];        // tenant1.app-qa.example.com
    var parts = host.Split('.');
    // Your rule: "tenant-env.example.com" => first label is tenant, second is env-app
    // E.g., tenant1.app-qa.example.com => tenant is parts[0], rest identifies environment/app
    return parts.Length > 2 ? $"{parts[0]}." : string.Empty;
}

2. Apply tenantized Authority and BaseUrl

• When configuring authentication:

builder.Services.AddOidcAuthentication(options =>
{
    builder.Configuration.Bind("AuthServer", options.ProviderOptions);
    options.UserOptions.RoleClaim = "role";
    options.ProviderOptions.Authority = ConvertToTenantSubDomain(builder, "AuthServer:Authority");
});

• When configuring remote services:

Configure<AbpRemoteServiceOptions>(options =>
{
    options.RemoteServices.Default = new RemoteServiceConfiguration(
        ConvertToTenantSubDomain(builder, "RemoteServices:Default:BaseUrl")
    );
});

3. appsettings.json (Blazor client) Provide patterns with {0} in the Blazor client so the above replacement works:

{
  "App": {
    "SelfUrl": "https://{0}.app-qa.example.com"
  },
  "AuthServer": {
    "Authority": "https://{0}.api.app-qa.example.com",
    "ClientId": "My_Blazor_Wasm",
    "ResponseType": "code"
  },
  "RemoteServices": {
    "Default": {
      "BaseUrl": "https://{0}.api.app-qa.example.com"
    }
  }
}

Repeat per environment or compute environment from the current host if you prefer a single file with multiple candidates.

C) Cookie/Authentication isolation across tenants in WASM If you observe “login to one tenant logs me into all,” your auth cookie is likely scoped to the parent domain. Always let the auth cookie domain be the exact host (no leading dot, Domain = null). OpenIddict server defaults typically align with this; avoid setting a shared cookie domain. Clear browser cookies after changes.

D) Resolver order and middleware ABP’s default resolver order starts with CurrentUserTenantResolveContributor, then QueryString, Route, Header, Cookie. Adding the domain resolver (as shown) integrates correctly. Ensure app.UseAbpRequestLocalization(), app.UseRouting(), app.UseAuthentication(), app.UseAbpMultiTenancy(), app.UseAuthorization() are in the standard order generated by templates.

E) Environment-based subdomains (app-qa/app-pre/app)

• Add one resolver format per actual host pattern you expect to hit on the API/Auth side:
  • "{0}.app-qa.example.com"
  • "{0}.app-pre.example.com"
  • "{0}.app.example.com"
• Make sure your DNS/ingress forwards those hosts to the API/Auth app.

F) Known limitations and notes for Blazor WASM

• There is no server-side Blazor UI pipeline to run a tenant resolver in WASM; you must shape the Authority and BaseUrl on the client at startup as above. This is the recommended approach for WASM.
• For the backend OpenIddict/redirect handling with subdomains, wildcard configuration is required (as in Section A).

G) Minimal verification steps

1. Create a tenant named tenant1.
2. Browse to https://tenant1.app-qa.example.com
3. Observe the Blazor WASM client sets Authority/BaseUrl to https://tenant1.api.app-qa.example.com (or your pattern).
4. Login succeeds; API requests include the correct tenant context, and ICurrentTenant is populated on the server.
5. Browse in a separate tab to another tenant’s URL; it should remain isolated.

2. Sources

• https://abp.io/docs/latest/framework/architecture/multi-tenancy#domainsubdomain-tenant-resolver
• https://github.com/abpframework/abp-samples/tree/master/DomainTenantResolver

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1. Solution The behavior you see almost always comes from how ABP’s Http API pipeline applies:

• Authorization
• Anti-forgery
• Conventional vs attribute routing
• Frontend helper headers (X-Requested-With, Abp-Tenant, etc.)

Swagger succeeds because it automatically sends the required headers (Authorization, X-Requested-With, RequestVerificationToken, etc.). Your browser/web client likely does not. That often results in a 404 Not Found (ABP hides some auth-related responses to avoid information leakage) unless you send the expected headers/tokens.

Checklist to fix the Not Found when calling from Web:

• Ensure you send Authorization like Swagger does

  • Send a valid Bearer token: Authorization: Bearer <access_token>

• Include the ABP Ajax header to avoid anti-forgery validation (GET is safe, but ABP expects the Ajax header in many UI scenarios)

  • X-Requested-With: XMLHttpRequest

• If you enabled Anti-Forgery (default for MVC/Razor), either:

  • Send the RequestVerificationToken header (value from the hidden input/__RequestVerificationToken cookie) like Swagger does, or
  • Mark the endpoint to ignore antiforgery: [IgnoreAntiforgeryToken] [HttpGet("lookup/autocomplete")] public virtual Task<ListResultDto<VehicleAutocompleteDto>> AutocompleteAsync([FromQuery] string keyword) { ... }

• Confirm your frontend is calling the exact same URL and method

  • GET http://localhost:44303/api/ksvr/vehicle-owners/lookup/autocomplete?keyword=29
  • If you have a reverse proxy/base path, ensure no extra prefix is added.

• If your app is multi-tenant and the request needs tenant context

  • Send Abp-TenantId or Abp-Tenant (tenant name) header if required by your app.
  • Example: Abp-TenantId: <guid> or Abp-Tenant: <tenant-name>

• Ensure route precedence is not overridden

  • You already placed [HttpGet("lookup/autocomplete")] before [HttpGet("{id:int}")], which is correct. If you have any global conventions modifying routes (like adding {__tenant}), confirm the final route matches what you call.

• Test quickly with curl or Postman using the same headers Swagger shows

  • From Swagger “curl” box, copy all headers used there and try the same request outside Swagger. If it works, then add those headers to your web client.

Example: minimal safe controller annotations if you don’t want anti-forgery for GET

[Authorize(KSVRPermissions.VehicleOwners.Default)]
  [Route("api/ksvr/vehicle-owners")]
  public class VehicleOwnersAppService : ApplicationService
  {
      [IgnoreAntiforgeryToken] // optional if you face CSRF checks in your UI pipeline
      [HttpGet("lookup/autocomplete")]
      public virtual async Task<ListResultDto<VehicleAutocompleteDto>> AutocompleteAsync([FromQuery] string keyword)
      {
          ...
      }
  }

And sample JS fetch with the required headers:

const res = await fetch('http://localhost:44303/api/ksvr/vehicle-owners/lookup/autocomplete?keyword=29', {
    method: 'GET',
    headers: {
      'Authorization': `Bearer ${accessToken}`,
      'X-Requested-With': 'XMLHttpRequest'
      // 'RequestVerificationToken': csrfToken // if needed in your setup
      // 'Abp-Tenant': tenantName // if multi-tenant by name
    },
    credentials: 'include'
  });

Why your other API works while autocomplete doesn’t

• The “by id” route might be hit from a tool that automatically includes Authorization (or your web call includes the token there), or your browser cached a token/cookie. The lookup route likely misses one of the headers above, causing ABP to return 404.

2. Sources

• https://docs.abp.io/en/abp/latest/API/Auto-API-Controllers

This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.