Cannot provide a value for property 'DialogService' Error

Radzen.Blazor Components
1

Application works fine in Visual Studio however I'm getting below errors on Radzen Blazor Studio.

Already added services on Program.cs

    builder.Services.AddScoped<DialogService>();
    builder.Services.AddScoped<NotificationService>();

Here is the error log;

System.InvalidOperationException: Cannot provide a value for property 'DialogService' on type 'LumosR.Pages.AddAssignment'. There is no registered service of type 'Radzen.DialogService'.
   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, Nullable`1 parentComponentId)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.InstantiateChildComponentOnFrame(RenderTreeFrame[] frames, Int32 frameIndex, Int32 parentComponentId)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(DiffContext& diffContext, Int32 frameIndex)
   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.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree)
   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

Can you show us the complete code of Program.cs?

3

Sure;

using LumosR.Pages;
using LumosR.Shared;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Radzen;
using Serilog;
using Serilog.Events;
using System.Reflection;


Log.Logger = new LoggerConfiguration()
.MinimumLevel.Debug()
.WriteTo.Logger(l => l.Filter.ByIncludingOnly(e => e.Level == LogEventLevel.Information).WriteTo.File(@"Logs\Info.log", rollingInterval: RollingInterval.Day))
.WriteTo.Logger(l => l.Filter.ByIncludingOnly(e => e.Level == LogEventLevel.Debug).WriteTo.File(@"Logs\Debug.log", rollingInterval: RollingInterval.Day))
.WriteTo.Logger(l => l.Filter.ByIncludingOnly(e => e.Level == LogEventLevel.Warning).WriteTo.File(@"Logs\Warning.log", rollingInterval: RollingInterval.Day))
.WriteTo.Logger(l => l.Filter.ByIncludingOnly(e => e.Level == LogEventLevel.Error).WriteTo.File(@"Logs\Error.log", rollingInterval: RollingInterval.Day))
.WriteTo.Logger(l => l.Filter.ByIncludingOnly(e => e.Level == LogEventLevel.Fatal).WriteTo.File(@"Logs\Fatal.log", rollingInterval: RollingInterval.Day))
.WriteTo.File(@"Logs\Verbose.log", rollingInterval: RollingInterval.Day)
.CreateLogger();

try
{
    Log.Information("STARTING LUMOS..");

    var builder = WebApplication.CreateBuilder(args);

    builder.Services.AddRazorPages();
    builder.Services.AddServerSideBlazor().AddHubOptions(o =>
    {
        o.MaximumReceiveMessageSize = 10 * 1024 * 1024;
    });
    builder.Services.AddScoped<DialogService>();
    builder.Services.AddScoped<NotificationService>();
    builder.Services.AddScoped<TooltipService>();
    builder.Services.AddScoped<ContextMenuService>();
    builder.Services.AddScoped<AddCredential>();
    builder.Services.AddLocalization();
    builder.Host.UseSerilog();

    var app = builder.Build();

    // Configure the HTTP request pipeline.
    if (!app.Environment.IsDevelopment())
    {
        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.UseHttpsRedirection();
    app.UseStaticFiles();
    app.UseRouting();
    app.MapControllers();
    app.MapBlazorHub();
    app.MapFallbackToPage("/_Host");

    app.Run();
}
catch (Exception ex)
{
    Log.Fatal(ex, "Application terminated unexpectedly");
}
finally
{
    Log.CloseAndFlush();
}
4

I think the try/catch block is causing this problem.

1 Like