I upgraded my Blazor server project to .Net 8 and get this error:
System.AggregateException: 'Some services are not able to be constructed'
TypeLoadException: Could not load type
'System.Runtime.CompilerServices.NullableAttribute' from assembly 'System.Runtime,
Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
InvalidOperationException: Error while validating the service descriptor 'ServiceType:
Microsoft.Extensions.Hosting.IHostApplicationLifetime Lifetime: Singleton ImplementationType:
Microsoft.Extensions.Hosting.Internal.ApplicationLifetime':
Could not load type 'System.Runtime.CompilerServices.NullableAttribute' from assembly 'System.Runtime, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
I also commented out Nullable in edit project so that Nullable reference types are disabled.
What is this error and how to correct this?
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net8.0</TargetFramework>
<!--<Nullable>enable</Nullable>-->
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<None Include="Pages\Counter.razor" />
<None Include="Pages\Error.cshtml" />
<None Include="Pages\Index.razor" />
<None Include="Pages\_Host.cshtml" />
<None Include="Shared\MainLayout.razor" />
<None Include="Shared\NavMenu.razor" />
<None Include="wwwroot\css\bootstrap\bootstrap.min.css.map" />
<None Include="wwwroot\css\open-iconic\FONT-LICENSE" />
<None Include="wwwroot\css\open-iconic\font\fonts\open-iconic.svg" />
<None Include="wwwroot\css\open-iconic\ICON-LICENSE" />
<None Include="wwwroot\css\open-iconic\README.md" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="Blazor-ApexCharts" Version="0.9.21-beta" />
<PackageReference Include="Blazor.PersianDatePicker" Version="3.0.2" />
<PackageReference Include="FreeSpire.PDF" Version="8.6.0" />
<PackageReference Include="FreeSpire.XLS" Version="12.7.0" />
<PackageReference Include="HtmlAgilityPack" Version="1.11.51" />
<PackageReference Include="HtmlSanitizer" Version="8.0.692" />
<PackageReference Include="LinqKit.Core" Version="1.2.4" />
<PackageReference Include="Microsoft.AspNetCore.Components.QuickGrid" Version="8.0.0-preview.7.23375.9" />
<PackageReference Include="Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter" Version="8.0.0-preview.7.23375.9" />
<PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="8.0.0-preview.7.23375.9" />
<PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
<PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.2.0" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.0-preview.7.23375.9" />
<PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="7.0.10" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0-preview.7.23375.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.0-preview.7.23375.4">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0-preview.7.23375.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuite" Version="8.0.0-preview.7.23375.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.0-preview.7.23375.4">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Microsoft.Extensions.Identity.Core" Version="8.0.0-preview.7.23375.9" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="8.0.0-preview.7.23375.6" />
<PackageReference Include="Microsoft.Spatial" Version="7.17.0" />
<PackageReference Include="MW.Blazor.TagSelector" Version="1.2.3" />
<PackageReference Include="MW.Blazor.Tree" Version="1.3.0" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
<PackageReference Include="SbSelect" Version="2.0.5" />
<PackageReference Include="System.Drawing.Common" Version="8.0.0-preview.7.23375.5" />
<PackageReference Include="System.Linq.Dynamic.Core" Version="1.3.4" />
<PackageReference Include="TinyMCE.Blazor" Version="1.0.4" />
</ItemGroup>
</Project>
Program.cs:
//-------------------------------------------- Services -----------------------------------------------------
var builder = WebApplication.CreateBuilder(args);
var services = builder.Services;
//-----------------------------------------------------------------------------------------------------------
services.AddControllersWithViews();
services.AddRazorPages()
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix,
options => options.ResourcesPath = "Resources")
.AddDataAnnotationsLocalization(options =>
{
options.DataAnnotationLocalizerProvider = (type, factory) =>
{
var assemblyName = new AssemblyName(typeof(ClientResource).GetTypeInfo().Assembly.FullName);
return factory.Create("SharedResource", assemblyName.Name);
};
});
services.AddServerSideBlazor(options =>
{
options.JSInteropDefaultCallTimeout = TimeSpan.FromSeconds(15);
}).AddHubOptions(o => o.MaximumReceiveMessageSize = 1000 * 1024 * 1024)
.AddCircuitOptions(opts => opts.DetailedErrors = true);
//services.AddSingleton<WeatherForecastService>();
//services.AddStorage();
string appConnectionString = builder.Configuration.GetConnectionString("AppConnection");
string identityConnectionString = builder.Configuration.GetConnectionString("IdentityConnection");
services.AddDbContextFactory<AppDbContext>(options =>
options.UseSqlServer(appConnectionString,
x => { x.UseNetTopologySuite(); }), ServiceLifetime.Transient);
services.AddDbContextFactory<IdentityContext>(options =>
options.UseSqlServer(identityConnectionString), ServiceLifetime.Transient);
services.AddIdentity<AppUser, IdentityRole>(opts =>
{
opts.User.RequireUniqueEmail = true;
//opts.User.AllowedUserNameCharacters = "abcdefghijklmnopqrstuvwxyz";
opts.Password.RequiredLength = 6;
opts.Password.RequireNonAlphanumeric = false;
opts.Password.RequireLowercase = false;
opts.Password.RequireUppercase = false;
opts.Password.RequireDigit = false;
opts.ClaimsIdentity.UserIdClaimType = JwtRegisteredClaimNames.Sub; //commented
/*opts.Tokens.EmailConfirmationTokenProvider = "custom";*/
opts.Tokens.PasswordResetTokenProvider = TokenOptions.DefaultEmailProvider;
opts.Tokens.EmailConfirmationTokenProvider = TokenOptions.DefaultEmailProvider;
}).AddEntityFrameworkStores<IdentityContext>().AddDefaultTokenProviders()
.AddTokenProvider<DataProtectorTokenProvider<AppUser>>("custom").AddDefaultUI();
//services.AddDataProtection().PersistKeysToFileSystem(new DirectoryInfo( @$"{env.WebRootPath}\config"));
services.AddLocalization(options => options.ResourcesPath = "Resources");
var supportedCultures = new List<CultureInfo> { new CultureInfo("fa"), new CultureInfo("en"), new CultureInfo("ar") };
services.Configure<RequestLocalizationOptions>(options =>
{
options.DefaultRequestCulture = new RequestCulture("fa");
options.SupportedUICultures = supportedCultures;
options.SupportedCultures = supportedCultures;
options.RequestCultureProviders.Add(new CookieRequestCultureProvider() { CookieName = "RP" });
});
//services.AddSyncfusionBlazor(false);
services.AddHttpContextAccessor();
services.AddScoped<IJsInterop, JsInterop>();
services.AddScoped<ViewDataService>();
services.AddScoped<TextService>();
services.AddScoped<TextService2>();
services.AddScoped<CultureChanger>();
services.AddTransient<Account>();
services.AddTransient<Admin>();
services.AddTransient<Home>();
services.AddTransient<HttpClient>();
//services.AddProtectedBrowserStorage();
services.AddScoped<MZScopedSessionID>();
services.AddSingleton<MZSingleton<Cart>>();
services.AddScoped<MZScoped<Cart>>();
services.AddSingleton<MZSingleton<IsAuthenticatedModel>>();
services.AddScoped<MZScoped<IsAuthenticatedModel>>();
services.AddScoped<IService, Service>();
services.AddTransient<JsConsole>();
services.AddScoped<IEmailSender, EmailSender>();
services.AddScoped<LocService>();
services.AddQuickGridEntityFrameworkAdapter();
services.AddMemoryCache();
services.AddSession();
//services.AddAntDesign();
/****************************** Create Admin Account ***************************/
//IdentityContext.CreateAdminAccount(services.BuildServiceProvider(), builder.Configuration);
/*******************************************************************************/
services.AddHttpsRedirection(options =>
{
options.RedirectStatusCode = (int)HttpStatusCode.PermanentRedirect;
options.HttpsPort = 443;
});
//---------------------------------------------- Configuration ----------------------------------------------
var app = builder.Build();
if (app.Environment.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseStaticFiles();
app.UseHttpsRedirection();
//app.UsePathBase("/store");
app.UseSession();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllers();
app.MapControllerRoute("controllers", "controllers/{controller=Site}/{action=Index}/{id?}");
app.MapRazorPages();
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");
//-----------------------------------------------------------------------------------------------------------
app.Run();
//-------------------
I tried to disable almost all services registrations, but get the same error.
