Getting Started with Blazor RadioButton Component

4 Nov 20254 minutes to read

This section explains how to include the Blazor RadioButton component in a Blazor WebAssembly app using Visual Studio and Visual Studio Code.

To get started quickly with the RadioButton component in Blazor, watch the following video or explore the RadioButton getting-started sample on GitHub.

Prerequisites

Create a new Blazor App in Visual Studio

Create a Blazor WebAssembly App using Visual Studio via Microsoft templates or the Syncfusion® Blazor Extension.

Install Syncfusion® Blazor Buttons and Themes NuGet in the App

To add the Blazor RadioButton component, open the NuGet Package Manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search for, and install Syncfusion.Blazor.Buttons and Syncfusion.Blazor.Themes. Alternatively, run the following Package Manager commands:

Install-Package Syncfusion.Blazor.Buttons -Version 31.2.12
Install-Package Syncfusion.Blazor.Themes -Version 31.2.12

NOTE

Syncfusion® Blazor components are available on nuget.org. Refer to the NuGet packages topic for the list of available packages and component details.

Prerequisites

Create a new Blazor App in Visual Studio Code

Create a Blazor WebAssembly App using Visual Studio Code via Microsoft templates or the Syncfusion® Blazor Extension.

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

dotnet new blazorwasm -o BlazorApp
cd BlazorApp

Install Syncfusion® Blazor Buttons and Themes NuGet in the App

  • Press Ctrl+` to open the integrated terminal in Visual Studio Code.
  • Ensure you are in the project root directory where the .csproj file is located.
  • Run the following commands to install Syncfusion.Blazor.Buttons and Syncfusion.Blazor.Themes, and restore packages.
dotnet add package Syncfusion.Blazor.Buttons -v 31.2.12
dotnet add package Syncfusion.Blazor.Themes -v 31.2.12
dotnet restore

NOTE

Syncfusion® Blazor components are available on nuget.org. Refer to the NuGet packages topic for the list of available packages and component details.

Register Syncfusion® Blazor Service

Open ~/_Imports.razor and import the Syncfusion.Blazor and Syncfusion.Blazor.Buttons namespaces.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Buttons

Now, register the Syncfusion® Blazor service in ~/Program.cs of the 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

The theme stylesheet is provided via Static Web Assets. Include the stylesheet reference in the <head> section of ~/index.html.

<head>
    ....
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />

</head>

NOTE

Review Blazor Themes for options to reference themes (Static Web Assets, CDN, and CRG). Ensure the theme stylesheet is loaded before any custom styles.

Add Blazor RadioButton component

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

<SfRadioButton Label="Option 1" Name="options" Value="card" @bind-Checked="stringChecked"></SfRadioButton>
<SfRadioButton Label="Option 2" Name="options" Value="cash" @bind-Checked="stringChecked"></SfRadioButton>

@code {
    private string stringChecked = "cash";
}
  • Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. This renders the Syncfusion® Blazor RadioButton component in the default web browser.
Blazor RadioButton Component

See Also

NOTE

Explore the Blazor Radio Button example that demonstrates rendering and configuration of the Radio Button.