This is a known issue in ABP Suite/Blazor Server projects when adding a "File" property to an entity, especially in modular or tiered solutions. The generated .razor.js file (e.g., Products.razor.js) is created in the module's Blazor project, but during development, it is not served correctly, resulting in 404 errors and the Blazor UI freezing or failing to load the file input.
This problem has been reproduced and acknowledged by the ABP team. The root cause is that static web assets from module projects are not always correctly discovered and served in development mode, especially for dynamically imported JS files generated by Suite for file properties.
Current Status:
Reference:
What to do now:
.razor.js file to the main Blazor project's wwwroot or ensure it is included as a static asset, but this is only a stopgap until the official fix is released.Sources:
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To fix the "Expected depth to be zero at the end of the JSON payload" error when returning a DataSourceResult (such as from Telerik) in an ABP HTTP API, you need to ensure that the returned object is properly serialized and compatible with System.Text.Json (the default serializer in ABP). Telerik's DataSourceResult may contain complex or non-serializable types, or may be serialized in a way that System.Text.Json cannot handle by default.
Here are the recommended steps to resolve this issue:
Avoid Returning Complex Types Directly
Instead of returning DataSourceResult directly from your API method, map its data to a DTO or a simpler object that is easily serializable.
Use Newtonsoft.Json if Required
If you must return DataSourceResult, configure your API to use Newtonsoft.Json instead of System.Text.Json, as Newtonsoft has better compatibility with complex types like DataSourceResult.
In your *.HttpApi.Host project, update your Startup.cs or module configuration:
context.Services.AddControllers() .AddNewtonsoftJson(options => { options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore; // Add other settings as needed });
And in your module:
```csharp
Configure<AbpAspNetCoreMvcOptions>(options =>
{
options.JsonSerializerIsSystemTextJson = false;
});
Check for Open/Unclosed JSON Objects
Ensure that your action method is not returning an object with open references or circular dependencies. If you use navigation properties, project only the required fields into DTOs.
Validate the Output
Before returning, serialize your result to JSON in a test to ensure it is valid and closed.
Example: Map DataSourceResult to DTO
public class TripGridResultDto { public IEnumerable
public async Task
This ensures the returned object is simple and serializable.
**Summary:**
- Prefer returning DTOs or simple objects.
- Switch to Newtonsoft.Json if you must return complex types.
- Avoid circular references and ensure all objects are serializable.
Sources:
- [Export Excel files from ABP Blazor application](https://abp.io/community/articles/wm7nnw3n)
- [ABP Support: DTO with Type property causes serialization error](https://abp.io/support/questions/2902)
---
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In ABP microservice or separated AuthServer scenarios, the [Authorize] attribute with a permission name (e.g., [Authorize("Permission.View")]) depends on correct claim propagation and permission definition registration across all relevant modules.
If _permissionChecker.IsGrantedAsync("Permission.View") returns true but [Authorize("Permission.View")] returns 403, the most common causes are:
In microservice solutions, you must ensure:
public override void PreConfigureServices(ServiceConfigurationContext context)
{
context.Services.PreConfigure<AbpIdentityServerBuilderOptions>(options =>
{
options.UpdateAbpClaimTypes = false;
});
}
Also, verify that the API module references the correct Application.Contracts and PermissionDefinitionProvider, and that the permission is visible in the Permission Management UI for the API service.
If the permission is only defined in the AuthServer, the API module will not recognize it for [Authorize] checks.
For more details, see:
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The alert you received from Windows Defender (Trojan:Win32/Yomal!rfn) when running ABP Studio or ABP Suite is most likely a false positive. ABP Studio and ABP Suite are official tools distributed by the ABP team, and there are no known reports of malicious code or hijacked dependencies in the official releases.
False positives can occur when antivirus software incorrectly flags legitimate software, especially developer tools that perform code generation or automation. This is a common issue with .NET tools and other CLI utilities.
To ensure safety:
If you are in a corporate environment, you may need to whitelist the ABP Suite executable or folder in your antivirus settings after verifying its source.
Sources:
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To achieve dynamic, efficient extension of your Customers module with extra information from other modules (like Appointments and Finances) in ABP, while maintaining modular boundaries and performance, you should consider the following best practices:
Modular Data Isolation & Integration:
Extending the Customer List with Extra Info:
Efficient Data Fetching:
DTO Design:
public class CustomerWithExtraInfoDto : CustomerDto
{
public Dictionary<string, object> ExtraInfo { get; set; }
}
Conditional UI Display:
Filtering and Advanced Logic:
ABP Guidance:
This approach keeps your modules decoupled, supports dynamic discovery of extra info providers, and ensures efficient data access.
Sources:
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To use EF Core's UseLazyLoadingProxies in an ABP application, all navigation properties (including collections) in your entities must be marked as virtual. However, some ABP modules (such as GDPR) may define their entities without marking navigation properties as virtual. This causes the error you encountered:
System.InvalidOperationException: Property 'GdprRequest.Infos' is not virtual. 'UseChangeTrackingProxies' requires all entity types to be public, unsealed, have virtual properties, and have a public or protected constructor. 'UseLazyLoadingProxies' requires only the navigation properties be virtual.
virtual.GdprRequest.Infos in the GDPR module) does not declare its navigation property as virtual, you cannot use UseLazyLoadingProxies unless you modify the source code of that module.virtual from outside the module, due to C#'s type system and the way EF Core proxies work.Do Not Use Lazy Loading Proxies:
If you depend on ABP modules that do not mark navigation properties as virtual, you cannot use EF Core's lazy loading proxies unless those modules are updated. Instead, use explicit or eager loading (Include, ThenInclude, or ABP's WithDetails).
Request Module Update:
You can request the maintainers of the ABP modules (such as GDPR) to update their entities to make navigation properties virtual. This is the only way to enable lazy loading proxies for those entities.
Fork and Patch (Not Recommended for Commercial Modules):
If you have access to the module's source code, you could fork and update the navigation properties to be virtual. However, this is not recommended for commercial modules or if you want to keep receiving updates.
Instead of relying on lazy loading, use eager loading:
var gdprRequest = await _gdprRequestRepository
.WithDetails(x => x.Infos)
.FirstOrDefaultAsync(x => x.Id == id);
Or with EF Core's Include:
var gdprRequest = await dbContext.GdprRequests
.Include(x => x.Infos)
.FirstOrDefaultAsync(x => x.Id == id);
You cannot use UseLazyLoadingProxies with ABP modules that do not declare navigation properties as virtual. Use eager or explicit loading as an alternative, or request the module authors to update their code.
Sources:
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When you encounter a large number of AbpDbConcurrencyException errors during simultaneous user login or registration, it typically indicates that multiple processes are trying to update the same database record at the same time. In ABP Framework, this is managed using Optimistic Concurrency Control, which relies on a concurrency token (like ConcurrencyStamp) to detect conflicting updates.
/connect/token) updates token or user records as part of the authentication flow.AbpDbConcurrencyException (wrapping DbUpdateConcurrencyException) when the concurrency token in the database does not match the one in the entity being updated.Understand the Concurrency Model
ABP uses Optimistic Concurrency Control. When an update occurs, the ConcurrencyStamp is checked. If it has changed since the entity was loaded, a concurrency exception is thrown.
See:
Reduce Simultaneous Updates
Handle Concurrency Exceptions Gracefully
AbpDbConcurrencyException in your application layer and provide a user-friendly message or retry logic if appropriate.Database and Index Tuning
Review Customizations
Upgrade Considerations
try
{
// Your update logic here
}
catch (AbpDbConcurrencyException ex)
{
// Handle the concurrency conflict, e.g., reload entity and retry or inform the user
}
HandleNonSuccessAndDebuggerNotification directly; it's a result of how EF Core and ABP handle concurrent updates.Sources:
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To implement an ICurrentCompany service similar to ICurrentTenant in a layered Blazor WASM solution, you can follow these steps:
public interface ICurrentCompany
{
Guid? CompanyId { get; }
string CompanyCode { get; }
Task ChangeAsync(Guid companyId, string companyCode);
}
Implement the Service:
Example implementation for Blazor WASM (client-side):
public class CurrentCompany : ICurrentCompany
{
private readonly IJSRuntime _jsRuntime;
private const string CompanyCookieName = "CurrentCompany";
public Guid? CompanyId { get; private set; }
public string CompanyCode { get; private set; }
public CurrentCompany(IJSRuntime jsRuntime)
{
_jsRuntime = jsRuntime;
}
public async Task ChangeAsync(Guid companyId, string companyCode)
{
CompanyId = companyId;
CompanyCode = companyCode;
await _jsRuntime.InvokeVoidAsync("BlazorCookies.Set", CompanyCookieName, companyId.ToString());
// Optionally store companyCode as well
}
public async Task InitializeAsync()
{
var companyIdString = await _jsRuntime.InvokeAsync<string>("BlazorCookies.Get", CompanyCookieName);
if (Guid.TryParse(companyIdString, out var companyId))
{
CompanyId = companyId;
}
}
}
builder.Services.AddScoped<ICurrentCompany, CurrentCompany>();
Set the Company from the UI:
ChangeAsync on your ICurrentCompany service.Server-Side:
Data Filtering:
public interface ICompanyFilter
{
Guid? CompanyId { get; }
}
- Apply this filter to your entities and queries.
References for Custom Filters and Claims:
This approach aligns with ABP conventions for context services and data filtering, allowing you to change the current company at runtime and persist the selection in a cookie, similar to how tenants are managed.
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The error The entity type 'ExtraPropertyDictionary' requires a primary key to be defined typically occurs when a type that is not meant to be an EF Core entity is being picked up by your DbContext's model builder. ExtraPropertyDictionary is an internal type used by ABP for extra properties and should not be mapped as an entity.
This usually happens if you accidentally add a DbSet<ExtraPropertyDictionary> to your DbContext, or if you use modelBuilder.Entity<ExtraPropertyDictionary>() in your OnModelCreating method. EF Core tries to map it as a table, but it has no primary key, causing the error.
Solution Steps:
Check Your DbContext:
DbSet<ExtraPropertyDictionary> in your DbContext.modelBuilder.Entity<ExtraPropertyDictionary>() in OnModelCreating.Review Entity Extension Mappings:
ExtraPropertyDictionary.Clean and Rebuild:
Check for Accidental Usages:
ExtraPropertyDictionary in your entity or DbContext code.If You Need to Add Extra Properties:
Example for extending an entity (do NOT use ExtraPropertyDictionary directly):
ObjectExtensionManager.Instance.Modules()
.ConfigureIdentity(identity =>
{
identity.ConfigureUser(user =>
{
user.AddOrUpdateProperty<string>("CustomProperty");
});
});
References:
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To refresh the access token using a refresh token in a Blazor Server application with ABP, follow these steps:
options.Scope.Add("offline_access");
.AddCookie("Cookies", options =>
{
options.ExpireTimeSpan = TimeSpan.FromDays(365); // Example: 1 year
})
Handle token expiration and refresh:
Sign out users after token expiration (optional but recommended):
Example: Adding offline_access and configuring OpenIdConnect in Blazor Server
services.AddAuthentication(options =>
{
options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = OpenIdConnectDefaults.AuthenticationScheme;
})
.AddCookie("Cookies", options =>
{
options.ExpireTimeSpan = TimeSpan.FromDays(365);
})
.AddOpenIdConnect(options =>
{
// ... other options ...
options.Scope.Add("offline_access");
});
var response = await httpClient.RequestRefreshTokenAsync(new RefreshTokenRequest
{
Address = disco.TokenEndpoint,
ClientId = "your-client-id",
ClientSecret = "your-client-secret",
RefreshToken = "your-refresh-token"
});
For a complete example and more details, see the official ABP documentation and community articles below.
Sources:
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