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Add sample about keyed services
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‎README.md

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# Samples for ASP.NET Core 6.0, 7.0 and 8.0 RC 2 (503)
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# Samples for ASP.NET Core 6.0, 7.0 and 8.0 RC 2 (504)
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- Samples for ASP.NET Core **8.0 RC 2** is available [here](/projects/.net8) (40).
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- Samples for ASP.NET Core **8.0 RC 2** is available [here](/projects/.net8) (41).
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- Samples for ASP.NET Core **7.0** is available [here](/projects/.net7) (45).
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- Samples for ASP.NET Core **8.0 Preview 6** using EdgeDB.NET is [here](https://github.com/edgedb/edgedb-net).
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‎projects/.net8/ComponentTwentySeven/.vscode/settings.json

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{
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"dotnet.defaultSolution": "ComponentTwentySix.sln"
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}

‎projects/.net8/ComponentTwentySeven/App.razor

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<Router AppAssembly="typeof(Program).Assembly">
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<Found Context="routeData">
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<RouteView RouteData="routeData" DefaultLayout="typeof(MainLayout)" />
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</Found>
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<NotFound>
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<h1>Page not found</h1>
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<p>Sorry, but there's nothing here!</p>
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</NotFound>
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</Router>

‎projects/.net8/ComponentTwentySeven/ComponentTwentySeven.csproj

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<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>true</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.0-rc.2.*" />
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<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.0-rc.2.*" />
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<Watch Include="**\*.cshtml" />
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<Watch Include="**\*.razor" />
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</ItemGroup>
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</Project>

‎projects/.net8/ComponentTwentySeven/ComponentTwentySeven.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.5.002.0
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentTwentySeven", "ComponentTwentySeven.csproj", "{23E5009B-0E29-4D9F-8BB7-2D7183A97DCA}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{23E5009B-0E29-4D9F-8BB7-2D7183A97DCA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{23E5009B-0E29-4D9F-8BB7-2D7183A97DCA}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{23E5009B-0E29-4D9F-8BB7-2D7183A97DCA}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{23E5009B-0E29-4D9F-8BB7-2D7183A97DCA}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {A0B52EB0-A57C-4AF0-9C40-C74BB7385C44}
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EndGlobalSection
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EndGlobal

‎projects/.net8/ComponentTwentySeven/Pages/Index.razor

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@page "/"
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@Msg1.Message <br/>
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@Msg2.Message
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@code
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{
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[Inject(Key = "msg1")]
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public IMessage Msg1 { get; set; }
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[Inject(Key = "msg2")]
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public IMessage Msg2 { get; set; }
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}
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‎projects/.net8/ComponentTwentySeven/Program.cs

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using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
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using ComponentTwentySeven;
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var builder = WebAssemblyHostBuilder.CreateDefault(args);
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builder.RootComponents.Add<App>("app");
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builder.Services.AddKeyedSingleton<IMessage>("msg1", (_, _) => new Msg("Hello world"));
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builder.Services.AddKeyedSingleton<IMessage>("msg2", (_, _) => new Msg("Goodbyeworld"));
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var app = builder.Build();
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await app.RunAsync();
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public interface IMessage
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{
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string Message { get; }
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}
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public class Msg(string message) : IMessage
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{
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public string Message => message;
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}
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‎projects/.net8/ComponentTwentySeven/README.md

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# Inject keyed services into components
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This sample shows how to use `[Inject(Key)]` in consuming keyed services.

‎projects/.net8/ComponentTwentySeven/Shared/MainLayout.razor

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@inherits LayoutComponentBase
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<div class="main">
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<div class="content px-4">
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@Body
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</div>
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</div>

‎projects/.net8/ComponentTwentySeven/_Imports.razor

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@using Microsoft.AspNetCore.Components.Web
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@using Microsoft.AspNetCore.Components.Routing
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@using Microsoft.JSInterop
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@using ComponentTwentySeven
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@using ComponentTwentySeven.Shared

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