Adding blazorwasm to existing asp net core application

Introduction

ASP.NET is a popular used for building web applications. It provides a powerful framework for developing dynamic and interactive websites. One common requirement in web development is the ability to add new features or technologies to an existing ASP.NET Core application. In this article, we will explore how to add Blazor WebAssembly () to an existing ASP.NET Core application.

What is Blazor WebAssembly?

Blazor WebAssembly is a client-side web framework for building interactive web applications using C# instead of JavaScript. It allows developers to write code in C# and have it run in the browser. This eliminates the need for JavaScript interop and provides a seamless development experience for .NET developers.

Adding Blazor WebAssembly to an Existing ASP.NET Core Application

To add Blazor WebAssembly to an existing ASP.NET Core application, follow these steps:

Step 1: Create a New Blazor WebAssembly Project

The first step is to create a new Blazor WebAssembly project. Open a command prompt or terminal and navigate to the directory where you want to create the project. Run the following command to create a new Blazor WebAssembly project:

 new blazorwasm -n MyBlazorApp

This command creates a new Blazor WebAssembly project named “MyBlazorApp” in the current directory.

Step 2: Add the Blazor WebAssembly Project to the ASP.NET Core Solution

Next, open the existing ASP.NET Core solution in Visual Studio or your preferred code editor. Right-click on the solution in the Solution Explorer and select “Add” > “Existing Project”. Navigate to the directory where you created the Blazor WebAssembly project and select the .csproj file. This will add the Blazor WebAssembly project to the solution.

Step 3: Configure the ASP.NET Core Application to the Blazor WebAssembly

In to serve the Blazor WebAssembly files from the ASP.NET Core application, you need to configure the application's startup class. Open the Startup.cs file in the ASP.NET Core project and add the following code to the ConfigureServices method:

services.AddMvc().AddNewtonsoftJson();

This code configures the application to use the Newtonsoft.Json library for JSON serialization, which is required by Blazor WebAssembly.

Next, add the following code to the Configure method:

app.UseBlazorFrameworkFiles();
app.UseStaticFiles();

This code configures the application to serve the Blazor WebAssembly files and static files.

Step 4: the ASP.NET Core Application's Startup Page

By default, the ASP.NET Core application's startup page is configured to serve the Razor Pages or MVC views. To make the Blazor WebAssembly project the startup page, open the appsettings.json file in the ASP.NET Core project and update the “DefaultPage” to point to the Blazor WebAssembly index.html file:

"DefaultPage": "/index.html"

Step 5: Run the Application

Finally, build and run the ASP.NET Core application. The Blazor WebAssembly project will be served alongside the existing ASP.NET Core application. You can now navigate to the Blazor WebAssembly project by appending “/MyBlazorApp” to the application's URL.

Conclusion

By following these steps, you can easily add Blazor WebAssembly to an existing ASP.NET Core application. Blazor WebAssembly provides a powerful and seamless way to build interactive web applications using C#. With its integration into ASP.NET Core, you can leverage the existing infrastructure and features of your ASP.NET Core application while enjoying the benefits of Blazor WebAssembly.

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