Unable to view any page in Design or Split mode

Radzen Blazor Studio
1

Good morning.

No matter which page I edit I get the same exception?

System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.AspNetCore.Components.Server.Circuits.CircuitOptionsJavaScriptInitializersConfiguration.Configure(CircuitOptions options)
at Microsoft.Extensions.Options.OptionsFactory1.Create(String name) at Microsoft.Extensions.Options.UnnamedOptionsManager1.get_Value()
at Microsoft.AspNetCore.Components.Server.Circuits.RemoteErrorBoundaryLogger..ctor(ILogger1 logger, IJSRuntime jsRuntime, IOptions1 options)
at InvokeStub_RemoteErrorBoundaryLogger..ctor(Object, Span1) at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor2.VisitCallSite(ServiceCallSite callSite, TArgument argument) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope) at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass2_0.<RealizeService>b__0(ServiceProviderEngineScope scope) at Microsoft.AspNetCore.Components.ComponentFactory.<>c__DisplayClass9_0.<CreatePropertyInjector>g__Initialize|1(IServiceProvider serviceProvider, IComponent component) at Microsoft.AspNetCore.Components.ComponentFactory.InstantiateComponent(IServiceProvider serviceProvider, Type componentType, IComponentRenderMode callerSpecifiedRenderMode, Nullable1 parentComponentId)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.InstantiateChildComponentOnFrame(RenderTreeFrame frames, Int32 frameIndex, Int32 parentComponentId)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(DiffContext& diffContext, Int32 frameIndex)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)
at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
--- End of stack trace from previous location ---
at Radzen.Server.RemoteRenderer.HandleException(Exception exception)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
at Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToRenderQueue(Int32 componentId, RenderFragment renderFragment)
at Radzen.Server.Router.Render(Type layout, Type component, Boolean renderLayout)
at Radzen.Server.Router.OnRouteChanged(Object sender, RouteChangedEventArgs e)
at Radzen.Server.RouterService.Route(Type component, Type defaultLayout, Boolean renderLayout)
at Radzen.Server.CircuitHost.AddComponent(Type layout, Type page, Boolean renderLayout)
at Radzen.Server.ProjectServer.Render(String fileName, String source, Boolean renderLayout)
at Radzen.Server.ProgramController.Render(RenderRequest request)

2

Hi @SolutionJ,

This isn't a known issue and we need to reproduce it locally in order to troubleshoot. Please send us a link to your app to info@radzen.com (upload it to some cloud storage such as OneDrive, Google Drive etc.).

3

Hi @korchev , I have just sent a link.

Cheers

Reg

4

Hi @SolutionJ,

The code which causes the problem is this:

builder.Services.AddServerSideBlazor()
    .AddHubOptions(options =>
    {
        options.ClientTimeoutInterval = TimeSpan.FromSeconds(30);
        options.KeepAliveInterval = TimeSpan.FromSeconds(10);
    });

You can update it like this to hide it from design-time builds:

#if !RADZEN
builder.Services.AddServerSideBlazor()
    .AddHubOptions(options =>
    {
        options.ClientTimeoutInterval = TimeSpan.FromSeconds(30);
        options.KeepAliveInterval = TimeSpan.FromSeconds(10);
    });
#endif

Still we will try to include a fix for this problem with the next release.

5

That’s great, many thank :slightly_smiling_face: