User696604810 posted
problem
when implement middleware to validate token result show correct but give me error null connectionstring ?
i get errror below in case of using app.UseTokenAuth(); :
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
// 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.UseTokenAuth();
app.UseHttpsRedirection();
app.UseMvc();
app.UseStaticFiles();
app.UseDefaultFiles();
}
but without this line no error connection
full errror show
ArgumentNullException: Value cannot be null. Parameter name: connectionString
Microsoft.EntityFrameworkCore.Utilities.Check.NotEmpty(string value, string parameterName)
Microsoft.EntityFrameworkCore.SqlServerDbContextOptionsExtensions.UseSqlServer(DbContextOptionsBuilder optionsBuilder, string connectionString, Action<SqlServerDbContextOptionsBuilder> sqlServerOptionsAction)
Security.Installers.DBInstaller+<>c__DisplayClass0_0.<InstallService>b__0(DbContextOptionsBuilder options) in DBInstaller.cs
+
options.UseSqlServer(
Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions+<>c__DisplayClass1_0<TContextService, TContextImplementation>.<AddDbContext>b__0(IServiceProvider p, DbContextOptionsBuilder b)
Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.DbContextOptionsFactory<TContext>(IServiceProvider applicationServiceProvider, Action<IServiceProvider, DbContextOptionsBuilder> optionsAction)
Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions+<>c__DisplayClass10_0<TContextImplementation>.<AddCoreServices>b__0(IServiceProvider p)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, ServiceProviderEngineScope scope)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor<TArgument, TResult>.VisitCallSite(IServiceCallSite callSite, TArgument argument)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScoped(ScopedCallSite scopedCallSite, ServiceProviderEngineScope scope)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor<TArgument, TResult>.VisitCallSite(IServiceCallSite callSite, TArgument argument)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, ServiceProviderEngineScope scope)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor<TArgument, TResult>.VisitCallSite(IServiceCallSite callSite, TArgument argument)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScoped(ScopedCallSite scopedCallSite, ServiceProviderEngineScope scope)
Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor<TArgument, TResult>.VisitCallSite(IServiceCallSite callSite, TArgument argument)
Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine+<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.GetService(IServiceProvider sp, Type type, Type middleware)
lambda_method(Closure , object , HttpContext , IServiceProvider )
Microsoft.AspNetCore.Builder.UseMiddlewareExtensions+<>c__DisplayClass4_1.<UseMiddleware>b__2(HttpContext context)
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
services.InstallServicesInAssembly(Configuration);
UserManager.StartSystem(Providers.SQLServer);
}
public class DBInstaller : IInstaller
{
public void InstallService(IServiceCollection services, IConfiguration confiuration)
{
services.AddDbContext<Data.DataContext>(options =>
options.UseSqlServer(
confiuration.GetConnectionString("DefaultConnection")));
services.AddSingleton<ItockenValidate, tockenValidate>();
}
public interface IInstaller
{
void InstallService(Microsoft.Extensions.DependencyInjection.IServiceCollection services, Microsoft.Extensions.Configuration.IConfiguration confiuration);
}
so that what is the problem please
