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If you're creating a bug/problem report, please include following:
- ABP Framework version: v4.3.2
- UI type: Blazor
- DB provider: EF Core
- Tiered (MVC) or Identity Server Separated (Angular): no
- Exception message and stack trace:
- Steps to reproduce the issue:"
I have this method in a MenuContributor class in my Blazor project: <br>
private async Task<Guid> GetFirstProjectAsync(Guid sltnId)
{
Console.WriteLine($"SLTNID = {sltnId} ");
var projectFilter = new GetProjectsInput
{
SltnId = new Guid("00000000-14ba-4f0f-8417-c2f312768aea")
};
projectFilter.MaxResultCount = PageSize;
projectFilter.SkipCount = (CurrentPage - 1) * PageSize;
projectFilter.Sorting = CurrentSorting;
var result = await _projectsAppService.GetListAsync(projectFilter); <--- THIS IS WHERE THE EXCEPTION HAPPENS
if (result.Items.FirstOrDefault() != null)
{
return result.Items.FirstOrDefault().Id;
}
else
{
Guid defaultGuid = default;
return defaultGuid;
}
}
It returns the following exception:
>> mono_wasm_start_single_stepping 2 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100] Unhandled exception rendering component: Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed. System.ObjectDisposedException: Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed. at Autofac.Core.Lifetime.LifetimeScope.BeginLifetimeScope(Object tag) at Autofac.Core.Lifetime.LifetimeScope.BeginLifetimeScope() at Autofac.Extensions.DependencyInjection.AutofacServiceScopeFactory.CreateScope() at Volo.Abp.Validation.ObjectValidator.GetErrors(Object validatingObject, String name, Boolean allowNull) at Volo.Abp.Validation.MethodInvocationValidator.AddMethodParameterValidationErrors(IAbpValidationResult context, ParameterInfo parameterInfo, Object parameterValue) at Volo.Abp.Validation.MethodInvocationValidator.AddMethodParameterValidationErrors(MethodInvocationValidationContext context) at Volo.Abp.Validation.MethodInvocationValidator.Validate(MethodInvocationValidationContext context) at Volo.Abp.Validation.ValidationInterceptor.Validate(IAbpMethodInvocation invocation) at Volo.Abp.Validation.ValidationInterceptor.InterceptAsync(IAbpMethodInvocation invocation) at Volo.Abp.Castle.DynamicProxy.CastleAsyncAbpInterceptorAdapter`1.<InterceptAsync>d__3`1[[Volo.Abp.Validation.ValidationInterceptor, Volo.Abp.Validation, Version=4.3.2.0, Culture=neutral, PublicKeyToken=null],[Volo.Abp.Application.Dtos.PagedResultDto`1[[Datansa.App.Solution.ProjectDto, Datansa.App.Application.Contracts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], Volo.Abp.Ddd.Application.Contracts, Version=4.3.2.0, Culture=neutral, PublicKeyToken=null]].MoveNext() at Datansa.App.Blazor.Navigation.SolutionMenuContributor.GetFirstProjectAsync(Guid sltnId) in C:\Users\agilm\Documents\Repos\Datansa.App\src\Datansa.App.Blazor\Navigation\SolutionMenuContributor.cs:line 109 at Datansa.App.Blazor.Navigation.SolutionMenuContributor.ConfigureMainMenuAsync(MenuConfigurationContext context) in C:\Users\agilm\Documents\Repos\Datansa.App\src\Datansa.App.Blazor\Navigation\SolutionMenuContributor.cs:line 63 at Datansa.App.Blazor.Navigation.SolutionMenuContributor.ConfigureMenuAsync(MenuConfigurationContext context) in C:\Users\agilm\Documents\Repos\Datansa.App\src\Datansa.App.Blazor\Navigation\SolutionMenuContributor.cs:line 49 at Volo.Abp.UI.Navigation.MenuManager.GetAsync(String name) at Volo.Abp.AspNetCore.Components.Web.LeptonTheme.Components.ApplicationLayout.Navigation.MainMenuProvider.GetMenuAsync() at Volo.Abp.AspNetCore.Components.Web.LeptonTheme.Components.ApplicationLayout.MainHeader.MainHeader.OnInitializedAsync() at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync() at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle)
However, I replicated the logic in a test method in my Application.Tests test project and the logic worked fine without exception.
Is it something to do with GUID?
This the class its trying to return:
public class ProjectDto : FullAuditedEntityDto<Guid> { public string Name { get; set; } public string Description { get; set; } public int DisplayOrder { get; set; } public List<ProjectConformDto> ProjectConforms { get; set; } }
Happy to provide the project if required.
10 Answer(s)
-
0
Please share a simple project, thank you
liming.ma@volosoft.com
-
0
I've sent you a project. The class that has the issue is SolutionMenuContributor in the Blazor project. The test class/method is ProjectApplicationTests class GetListAsyncForSltn method in the Datansa.App.Application.Tests project.
-
0
hi
Blazor is works fine. also
GetListAsyncForSltnmethod.
-
0
I had commented out the code in the SolutionMenuContributor , GetFirstProjectAsync method.
Did you uncomment it before you tested. SolutionMenuContributor still doesn't work for me, although the test class does. This is the issue.
-
0
You will also need to remove "return new Guid();" at the start of the GetFirstProjectAsync method.
-
0
HI
Can you make the above changes and resend the project ?
-
0
I've sent you a link.
-
0
I have reproduced the problem and checking it.
-
0
public async Task ConfigureMenuAsync(MenuConfigurationContext context) { //resolve Solution App Service dependency _solutionsAppService = context.ServiceProvider.GetRequiredService<ISolutionsAppService>(); //resolve Project App Service dependency _projectsAppService = context.ServiceProvider.GetRequiredService<IProjectsAppService>(); if (context.Menu.Name == StandardMenus.Main) { await ConfigureMainMenuAsync(context); } }public async Task ConfigureMenuAsync(MenuConfigurationContext context) { if (context.Menu.Name == StandardMenus.Main) { //resolve Solution App Service dependency _solutionsAppService = context.ServiceProvider.GetRequiredService<ISolutionsAppService>(); //resolve Project App Service dependency _projectsAppService = context.ServiceProvider.GetRequiredService<IProjectsAppService>(); await ConfigureMainMenuAsync(context); } } -
0
Thank you. I don't understand why, but this fixed the issue.
