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Q&A Include a Blazor Webassembly project into an existing ASP.NET Core project

Add Microsoft.AspNetCore.Components.WebAssembly.Server nuget to the ASP.NET Core application. Reference the Blazor WebAssembly application from the ASP.NET Core application. <Project Sdk="Mi...

posted 3y ago by ndc‭

Answer
#1: Initial revision by user avatar ndc‭ · 2020-09-07T08:51:27Z (over 3 years ago)
1. Add `Microsoft.AspNetCore.Components.WebAssembly.Server` nuget to the ASP.NET Core application.

1. Reference the Blazor WebAssembly application from the ASP.NET Core application.

    ```xml
    <Project Sdk="Microsoft.NET.Sdk.Web">
    <!-- ... -->
    <ItemGroup>
        <!-- ... -->
        <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="3.2.1" />
    </ItemGroup>

    <ItemGroup>
        <!-- ... -->
        <ProjectReference Include="..\MyBlazorApp.csproj" />
    </ItemGroup>
    <!-- ... -->
    </Project>
    ```

1. Edit the `Startup` file of the ASP.NET Core application:
    1. Add `UseWebAssemblyDebugging` if running in development mode (see sample below).
    1. Call the `UseBlazorFrameworkFiles`.
    1. Add `MapFallbackToFile("index.html")` routing.

    ```c#
    namespace MyApp
    {
        public class Startup
        {
            public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
            {
                if (env.IsDevelopment())
                {
                    // ...
                    app.UseWebAssemblyDebugging();                  // this
                }

                // ...
                app.UseBlazorFrameworkFiles();                      // this

                app.UseEndpoints(endpoints =>
                {
                    // ...
                    endpoints.MapFallbackToFile("index.html");      // this
                });
            }
        }
    }
    ```

1. Then edit the `launchSettings.json`, add `inspectUri` like so:

    ```json
    {
        // ...
        "profiles": {
        "IIS Express": {
            // ...
            "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}"
        },
        "MyApp": {
            // ...
            "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}"
        }
        }
    }
    ```