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lang: ja-jp
breaks: true
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# FluentNumberField を WebAssembly で使用すると `There is no registered service of type 'Microsoft.FluentUI.AspNetCore.Components.LibraryConfiguration'.` とエラーが発生する。 2024-01-19

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Cannot provide a value for property 'LibraryConfiguration' on type 'Microsoft.FluentUI.AspNetCore.Components.FluentInputLabel'. There is no registered service of type 'Microsoft.FluentUI.AspNetCore.Components.LibraryConfiguration'.
System.InvalidOperationException: Cannot provide a value for property 'LibraryConfiguration' on type 'Microsoft.FluentUI.AspNetCore.Components.FluentInputLabel'. There is no registered service of type 'Microsoft.FluentUI.AspNetCore.Components.LibraryConfiguration'.
   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.RenderInExistingBatch(RenderQueueEntry renderQueueEntry)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

## プロジェクトテンプレート



## クライアント側プロジェクト（XXXX.Client） の Program.cs に以下を追加すると動作する。

builder.Services.AddScoped<Microsoft.FluentUI.AspNetCore.Components.LibraryConfiguration>();

全体は以下のようになる

using Microsoft.AspNetCore.Components.WebAssembly.Hosting;

var builder = WebAssemblyHostBuilder.CreateDefault(args);

builder.Services.AddScoped<Microsoft.FluentUI.AspNetCore.Components.LibraryConfiguration>();

await builder.Build().RunAsync();

###### tags: `Fluent UI Blazor` `Blazor` `Fluent` `FluentNumberField` `エラー` `LibraryConfiguration`