Getting Started with Blazor WebAssembly App in Visual Studio

24 Feb 20255 minutes to read

This article provides a step-by-step instructions for building Blazor WebAssembly App with Blazor Calendar component using Visual Studio and Visual Studio Code.

To get start quickly with Blazor WebAssembly App, you can check on this video.

Prerequisites

Create a new Blazor WebAssembly App in Visual Studio

You can create a Blazor WebAssembly App using Visual Studio via Microsoft Templates or the Syncfusion® Blazor Extension.

Install Syncfusion® Blazor Calendars and Themes NuGet in the App

Here’s an example of how to add Blazor Calendar component in the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search and install Syncfusion.Blazor.Calendars and Syncfusion.Blazor.Themes. Alternatively, you can utilize the following package manager command to achieve the same.

Install-Package Syncfusion.Blazor.Calendars -Version 28.2.3
Install-Package Syncfusion.Blazor.Themes -Version 28.2.3

NOTE

Syncfusion® Blazor components are available in nuget.org. Refer to NuGet packages topic for available NuGet packages list with component details.

Create a Blazor WebAssembly App in Visual Studio Code

You can create a Blazor WebAssembly App using Visual Studio Code via Microsoft Templates or the Syncfusion® Blazor Extension.

Alternatively, you can create a WebAssembly application using the following command in the terminal(Ctrl+`).

dotnet new blazorwasm -o BlazorApp
cd BlazorApp

For a hosted Blazor WebAssembly experience, add the hosted option (-ho or –hosted) option to the command.

dotnet new blazorwasm -o BlazorApp -ho

This command creates new Blazor WebAssembly app project and places it in a new directory called BlazorApp inside your current location. See Create Blazor app topic and dotnet new command topics for more details.

NOTE

If you have installed multiple SDK versions and need any specific framework version (net6.0/net7.0) project, then add -f flag along with dotnet new blazorwasm comment. Refer here for the available options.

Install Syncfusion® Blazor Calendars and Themes NuGet in the App

  • Press Ctrl+` to open the integrated terminal in Visual Studio Code.
  • Ensure you’re in the project root directory where your .csproj file is located.
  • Run the following command to install a Syncfusion.Blazor.Calendars and Syncfusion.Blazor.Themes NuGet package and ensure all dependencies are installed.
dotnet add package Syncfusion.Blazor.Calendars -Version 28.2.3
dotnet add package Syncfusion.Blazor.Themes -Version 28.2.3
dotnet restore

NOTE

Syncfusion® Blazor components are available in nuget.org. Refer to NuGet packages topic for available NuGet packages list with component details.

Register Syncfusion® Blazor Service

Open ~/_Imports.razor file and import the Syncfusion.Blazor and Syncfusion.Blazor.Calendars namespace.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Calendars

Now, register the Syncfusion® Blazor Service in the ~/Program.cs file of your Blazor WebAssembly App.

using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using Syncfusion.Blazor;

var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
builder.RootComponents.Add<HeadOutlet>("head::after");

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

builder.Services.AddSyncfusionBlazor();
await builder.Build().RunAsync();
....

Add stylesheet and script resources

The theme stylesheet and script can be accessed from NuGet through Static Web Assets. Reference the stylesheet and script in the <head> of the main page as follows:

  • For Blazor WebAssembly app, include it in the ~wwwroot/index.html file.
<head>
    ....
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
    <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>

NOTE

Check out the Blazor Themes topic to discover various methods (Static Web Assets, CDN, and CRG) for referencing themes in your Blazor application. Also, check out the Adding Script Reference topic to learn different approaches for adding script references in your Blazor application.

Add Syncfusion® Blazor component

Add the Syncfusion® Blazor Calendar component in the ~/Pages/Index.razor file.

<SfCalendar TValue="DateTime" Value="DateTime.Now" />
  • Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. This will render the Syncfusion® Blazor Calendar component in your default web browser.

Blazor Calendar Component