To address the issues you described on the Tenants page in your ABP Blazor Web App (v9.2.2):
This is typically caused by the modal/dialog component not being fully initialized or bound on the first render. In Blazor, modals often require the component to be rendered and the JS interop to be ready before they can open reliably. If the modal is not initialized, the first click may only trigger initialization, and the second click actually opens it.
Solution:
@ref is set and the modal's JS interop (if any) is initialized in OnAfterRenderAsync.StateHasChanged() after the modal is ready.Example for a modal initialization in Blazor:
protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (firstRender)
{
// Initialize modal or JS interop here
StateHasChanged();
}
}
This usually happens if the form's validation state is set to "touched" or "dirty" before the user interacts with the form. In Blazor, validation messages should only appear after the user attempts to submit the form or interacts with the fields.
Solution:
EditContext is not being validated or marked as modified before the user interacts.EditContext for the form model to reset validation state.Validate() or set fields as touched on modal open.Example:
private TenantCreateDto NewTenantModel = new();
private EditContext NewTenantEditContext;
void OpenNewTenantModal()
{
NewTenantModel = new TenantCreateDto();
NewTenantEditContext = new EditContext(NewTenantModel);
// Open modal here
}
Bind your form to NewTenantEditContext to ensure a fresh validation state each time.
This is because the form's state is reset when the modal is closed and reopened, which is the correct behavior. The issue is only on the first open due to the initial validation state.
EditContext when opening a modal for a new entity.References:
These steps should resolve both the double-click issue and the premature validation messages on your Tenants page.
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In ABP 9.x Blazor WebAssembly/WebApp projects, CSS isolation for component styles (e.g., Index.razor.css) does not work out-of-the-box in the WASM client due to the new global assets and bundling system. The isolated CSS files are not automatically included in the global bundles that are loaded by the WASM client.
To ensure your isolated CSS is included and applied in the WASM context, you need to explicitly add the generated CSS files to the global style bundle using a BundleContributor. Here’s how you can do it:
BundleContributor for your styles:public class MyProjectNameStyleBundleContributor : BundleContributor
{
public override void ConfigureBundle(BundleConfigurationContext context)
{
// Add the generated CSS file for your component
context.Files.Add("_content/MyProjectName.Blazor.Client/Index.razor.css");
}
}
ConfigureServices:Configure<AbpBundlingOptions>(options =>
{
var globalStyles = options.StyleBundles.Get(BlazorWebAssemblyStandardBundles.Styles.Global);
globalStyles.AddContributors(typeof(MyProjectNameStyleBundleContributor));
});
.csproj for the client project includes the following so the CSS is published:<ItemGroup>
<Content Update="Index.razor.css">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
</Content>
</ItemGroup>
Remove any manual global.css from wwwroot and rely on the bundling system.
Run your application and verify that the CSS is present in /global.css (or the configured bundle) and applied in both server and WASM modes.
This approach ensures your isolated CSS is bundled and available to the WASM client, resolving the issue where styles only appear in server-side rendering.
Sources:
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For Blazor Server applications, ABP Framework does not provide a built-in, automatic JavaScript/CSS bundling system like the "Global Assets" feature available for Blazor WebAssembly. The documentation and referenced article specifically address Blazor WebAssembly, and the BundleContributor approach is not supported for Blazor Server.
In Blazor Server, the recommended approaches are:
There is currently no ABP-specific abstraction or automation for bundling static files in Blazor Server projects. The ABP bundling system and BundleContributor pattern are designed for MVC and Blazor WebAssembly scenarios.
Sources:
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To implement an admin page preview feature in an ABP Framework Pro MVC Core Razor application, you can leverage the CMS Kit module, which supports dynamic page creation and management. While CMS Kit provides dynamic page editing, a "Preview" workflow as described requires some customization. Here’s a step-by-step approach:
Use CMS Kit Dynamic Pages
Implement a Preview Button
Preview Endpoint/Modal
Return to Edit or Publish
Example Workflow:
/Pages/Preview endpoint with the current draft.Sample Razor Page Preview Action:
[HttpPost]
public IActionResult Preview(string htmlContent)
{
// Render a view with the provided HTML content
ViewData["PreviewContent"] = htmlContent;
return View("Preview");
}
In Preview.cshtml:
@{
Layout = "_YourSiteLayout";
}
<div>
@Html.Raw(ViewData["PreviewContent"])
</div>
Notes:
Sources:
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The issue occurs because Oracle does not support the native BOOLEAN type in table columns. When ABP/EF Core tries to create tables with BOOLEAN columns, Oracle throws an error (ORA-00902: invalid datatype).
To resolve this, you must map boolean properties to a supported Oracle type, such as NUMBER(1) or NUMBER(10), instead of BOOLEAN.
ABP provides guidance for Oracle EF Core integration. You should use the Devart provider and follow the official documentation to handle type mapping issues.
Steps to fix:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
foreach (var entityType in modelBuilder.Model.GetEntityTypes())
{
foreach (var property in entityType.GetProperties())
{
if (property.ClrType == typeof(bool) || property.ClrType == typeof(bool?))
{
property.SetColumnType("NUMBER(1)");
}
}
}
}
This approach will allow your ABP application to work with Oracle without manual table edits for every boolean property.
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To use SignalR behind Nginx with ABP on Linux, you need to ensure both your Nginx configuration and your application's Content Security Policy (CSP) are set up to allow WebSocket connections.
Solution:
Nginx Configuration for WebSockets
Make sure your Nginx reverse proxy forwards WebSocket connections. Add the following to your Nginx site configuration for the SignalR endpoint:
location /signalr-hubs/ {
proxy_pass http://your_backend_server;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
Replace your_backend_server with the internal address of your SignalR service.
Content Security Policy (CSP) Update
The error message indicates your CSP is blocking wss:// connections. Update your CSP header to explicitly allow WebSocket connections from your SignalR domain. For example:
Content-Security-Policy: default-src 'self' http: https: data: blob: 'unsafe-inline'; connect-src 'self' wss://signalr.mydomain.com https://signalr.mydomain.com;
Add or update the connect-src directive to include your SignalR domain with both wss:// and https://.
ABP SignalR Integration
Ensure your SignalR hub is correctly configured in your ABP application and that the endpoint is mapped as shown in the official ABP documentation.
app.UseEndpoints(endpoints =>
{
endpoints.MapHub<YourHub>("/signalr-hubs/instant-message");
});
And make sure your frontend connects to the correct URL.
References:
These steps will allow your SignalR service to work correctly behind Nginx with proper WebSocket and CSP configuration.
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Required Steps:
AbpBundlingOptions and add your contributors for LeptonX:[DependsOn(
typeof(AbpAspNetCoreMvcUiBundlingModule),
typeof(AbpAspNetCoreMvcUiLeptonXThemeBundlingModule)
)]
public class YourWebModule : AbpModule
{
public override void ConfigureServices(ServiceConfigurationContext context)
{
Configure<AbpBundlingOptions>(options =>
{
options.StyleBundles.Get(MvcLeptonXThemeBundles.Styles.Global)
.AddContributors(typeof(YourStyleBundleContributor));
options.ScriptBundles.Get(MvcLeptonXThemeBundles.Scripts.Global)
.AddContributors(typeof(YourScriptBundleContributor));
});
}
}
Use MapAbpStaticAssets:
Startup.cs or module initialization, replace app.UseStaticFiles() with app.MapAbpStaticAssets() to ensure virtual files (including LeptonX assets) are served correctly in .NET 9.Remove Old Bundling Artifacts:
global.js or global.css files from your wwwroot if they were previously generated.AbpCli:Bundle section from your appsettings.json.Ensure Correct NuGet Packages:
<PackageReference Include="Volo.Abp.AspNetCore.Mvc.UI.Theme.LeptonX.Bundling" Version="9.0.0" />
Volo.Abp.AspNetCore.Mvc.UI.Bundling.Development Mode:
Check for Additional Module Bundling:
Summary:
You must migrate your bundling configuration to the new Global Assets system, update your module dependencies, and use MapAbpStaticAssets for static file serving. This ensures the latest LeptonX bundles are loaded in ABP 9, including in development mode.
Sources:
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The error you are encountering when running dotnet dev-certs https -v -ep C:\Program Files\dotnet\myapp\openiddict.pfx ... is due to a permissions issue: the workflow is trying to write the openiddict.pfx file into C:\Program Files\dotnet\myapp, which is a protected system directory on Windows runners and does not allow write access for non-admin processes.
The ABP documentation recommends using ${{env.DOTNET_ROOT}}/myapp/openiddict.pfx, but on Windows runners, $DOTNET_ROOT is typically C:\Program Files\dotnet, which is not writable.
To fix this, change the output path for your publish and certificate generation steps to a directory that is guaranteed to be writable, such as $(Build.ArtifactStagingDirectory) or a relative path like ./myapp.
How to fix:
- name: dotnet publish
run: dotnet publish -c Release -r win-x64 --self-contained false -o ./myapp
shell: pwsh
working-directory: ./src/ArmadaIO.Web
env:
ASPNETCORE_ENVIRONMENT: Production
- name: Generate openiddict.pfx
run: dotnet dev-certs https -v -ep ./myapp/openiddict.pfx -p c41eb3e7-8a8e-429f-9052-0850406f2f11
shell: pwsh
- name: Upload artifact for deployment job
uses: actions/upload-artifact@v4
with:
name: .net-app
path: ./myapp
Summary:
Sources:
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The error message:
More than one module matches. Use the '--skip-import' option to skip importing the component into the closest module or use the module option to specify a module.
indicates that the Angular schematics used by ABP Suite cannot determine which Angular module to import the generated component into, because multiple modules match the criteria.
.module.ts file where you want the generated component to be imported (e.g., app.module.ts or a feature module).--module option to specify the exact module file path. For example:--module=src/app/your-feature/your-feature.module.ts
--module option.Clean Up Duplicate Modules
Workaround: Use --skip-import
--skip-import option. You will then need to manually import the generated component into the desired module.Regenerate After Fix
This is a known issue with Angular schematics when multiple modules match. See the following for more details and workarounds:
By specifying the module explicitly or cleaning up your module structure, you should be able to resolve the error and generate Angular UI code from ABP Suite.
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ABP Suite currently supports code generation for the services of a microservice solution, but UI code generation is not supported yet. When using the microservice template, ABP Suite generates code only for the supported layers and does not recognize or generate code for a custom Domain Layer you add to your microservices. Customizing the code generation process to include your own Domain Layer is not supported out of the box in the current version.
You can generate code on the service layer, but if you require code generation for a custom Domain Layer, you will need to manually integrate or adapt the generated code to fit your architecture.
This scenario—automatic code generation into a custom Domain Layer in microservice solutions—is not currently supported by ABP Suite.
Sources:
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