Getting Started with Blazor Floating Action Button Component

27 Jan 20256 minutes to read

This section briefly explains about how to include Blazor Floating Action Button component in your Blazor Server App and Blazor WebAssembly App using Visual Studio.

To get start quickly with Floating Action Button Component using Blazor, you can check on this video or GitHub sample.

Prerequisites

Create a new Blazor App in Visual Studio

You can create a Blazor Server App or 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 Blazor Floating Action Button 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.Buttons and Syncfusion.Blazor.Themes. Alternatively, you can utilize the following package manager command to achieve the same.

Install-Package Syncfusion.Blazor.Buttons -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 new Blazor App in Visual Studio Code

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

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

dotnet new blazorserver -o BlazorApp
cd BlazorApp
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’re in the project root directory where your .csproj file is located.
  • Run the following command to install a Syncfusion.Blazor.Buttons and Syncfusion.Blazor.Themes NuGet package and ensure all dependencies are installed.
dotnet add package Syncfusion.Blazor.Buttons -v 28.2.3
dotnet add package Syncfusion.Blazor.Themes -v 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.Buttons namespace.

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

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

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

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddSyncfusionBlazor();

var app = builder.Build();
....
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 .NET 6 Blazor Server app, include it in ~/Pages/_Layout.cshtml file.

  • For .NET 7 Blazor Server app, include it in the ~/Pages/_Host.cshtml file.

  • For Blazor WebAssembly app, include it in 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, check out the Adding Script Reference topic to learn different approaches for adding script references in your Blazor application.

Add Blazor Floating Action Button component

Add the Syncfusion® Blazor Floating Action Button component in 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 will render the Syncfusion® Blazor Floating Action Button component in your 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 on the floating action button. You can 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.