Getting Started with Blazor Accordion Component

29 Jan 20248 minutes to read

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

To get started quickly with Blazor Accordion, check on the following video or GitHub sample:

Prerequisites

System requirements for Blazor components

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 Navigations and Themes NuGet in the App

To add Blazor Accordion 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.Navigations and Syncfusion.Blazor.Themes. Alternatively, you can utilize the following package manager command to achieve the same.

Package Manager
Install-Package Syncfusion.Blazor.Navigations -Version 27.2.2
Install-Package Syncfusion.Blazor.Themes -Version 27.2.2

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.Navigations namespace.

~/_Imports.razor

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Navigations

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

Blazor Server App
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 Accordion component

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

RAZOR
<SfAccordion>
    <AccordionItems>
        <AccordionItem Header="Margeret Peacock" Content="Margeret Peacock was born on Saturday , 01 December 1990. Now lives at Coventry House Miner Rd., London,UK. Margeret Peacock holds a position of Sales Coordinator in our WA department, (Seattle USA). Joined our company on Saturday , 01 May 2010"></AccordionItem>
        <AccordionItem Header="Laura Callahan" Content="Laura Callahan was born on Tuesday , 06 November 1990. Now lives at Edgeham Hollow Winchester Way, London,UK. Laura Callahan holds a position of Sales Coordinator in our WA department, (Seattle USA). Joined our company on Saturday , 01 May 2010"></AccordionItem>
        <AccordionItem Header="Albert Dodsworth" Content="Albert Dodsworth was born on Thursday , 19 October 1989. Now lives at 4726 - 11th Ave. N.E., Seattle,USA.Albert Dodsworth holds a position of Sales Representative in our WA department, (Seattle USA). Joined our company on Friday , 01 May 2009"></AccordionItem>
    </AccordionItems>
</SfAccordion>

Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. This will render the Syncfusion Blazor Accordion component in your default web browser.

Initialize Blazor Accordion using Template

The following code explains how to initialize Blazor Accordion using header and content template.

CSHTML

@using Syncfusion.Blazor.Navigations

<SfAccordion>
    <AccordionItems>
        <AccordionItem>
            <HeaderTemplate>
                <div>Margeret Peacock</div>
            </HeaderTemplate>
            <ContentTemplate>
                <div class='container'><img src='images/margeret.png' /><div class='content'><b>Margeret Peacock</b> was born on Saturday , 01 December 1990. Now lives at Coventry House Miner Rd., London,UK. Margeret Peacock holds a position of <b>Sales Coordinator</b> in our WA department, (Seattle USA). Joined our company on Saturday , 01 May 2010.</div></div>">
            </ContentTemplate>
        </AccordionItem>
        <AccordionItem>
            <HeaderTemplate>
                <div>Laura Callahan</div>
            </HeaderTemplate>
            <ContentTemplate>
                <div class='container'><img src='images/laura.png'/><div class='content'><b>Laura Callahan</b> was born on Tuesday , 06 November 1990. Now lives at Edgeham Hollow Winchester Way, London,UK. Laura Callahan holds a position of <b>Sales Coordinator</b> in our WA department, (Seattle USA). Joined our company on Saturday , 01 May 2010.</div></div>
            </ContentTemplate>
        </AccordionItem>
        <AccordionItem>
            <HeaderTemplate>
                <div>Albert Dodsworth</div>
            </HeaderTemplate>
            <ContentTemplate>
                <div class='container'><img src='images/albert.png' /><div class='content'> <b>Albert Dodsworth</b> was born on Thursday , 19 October 1989. Now lives at 4726 - 11th Ave. N.E., Seattle,USA.Albert Dodsworth holds a position of <b>Sales Representative</b> in our WA department, (Seattle USA). Joined our company on Friday , 01 May 2009.</div></div>
            </ContentTemplate>
        </AccordionItem>
    </AccordionItems>
</SfAccordion>

<style>
    img {
        height: 40px;
        width: 50px;
        margin-top: 13px;
    }

    .container {
        display: inline-flex;
        width: auto;
        padding: 0;
    }

    .content {
        margin-left: 10px;
    }
</style>