Getting Started with Blazor Floating Action Button Component

4 Nov 20255 minutes to read

This guide explains how to add the Blazor Floating Action Button component to a Blazor WebAssembly app using Visual Studio and Visual Studio Code.

To get started quickly with the Floating Action Button component in Blazor, watch this video or explore the GitHub sample.

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 Floating Action Button component to the app, open the NuGet Package Manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), then search for and install Syncfusion.Blazor.Buttons and Syncfusion.Blazor.Themes. Alternatively, use 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 complete package list 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 commands 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 the terminal is in the project root directory where your .csproj file is located.
  • Run the following commands to install Syncfusion.Blazor.Buttons and Syncfusion.Blazor.Themes, and restore dependencies.
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 complete package list 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 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. Include the stylesheet and script references in the <head> section of the ~/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, see Adding Script Reference for approaches to adding script references.

Add Blazor Floating Action Button component

Add the Syncfusion® Blazor Floating Action Button component to the ~/Pages/Index.razor file.

@using Syncfusion.Blazor.Buttons

<div id="target" style="min-height:200px; position:relative; width:300px; border:1px solid;">
    <SfFab Target="#target" Content="Add"></SfFab>
</div>
  • Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. This renders the Syncfusion® Blazor Floating Action Button component in the default web browser.
![Blazor Floating Action Button Component

Event Click In Blazor Floating Action Button

The floating action button control triggers the OnClick event when you click the floating action button. Use this event to perform the required action.

<div id="target" style="min-height:200px; position:relative; width:300px; border:1px solid;">
    <SfFab Target="#target" IconCss="e-icons e-plus" OnClick="EventClick"></SfFab>
</div>

@code{
    public void EventClick()
    {
        // Here, you can call your desired action.
    }
}
Blazor Floating Action Button Component

NOTE

You can also explore our Blazor Floating Action Button example that shows how to render and configure the button.