Getting Started with Blazor OTP Input component

4 Nov 20254 minutes to read

This guide explains how to add the Blazor OTP Input component to a Blazor WebAssembly app using Visual Studio and Visual Studio Code.

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 Inputs and Themes NuGet in the App

To add Blazor OTP Input component in 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.Inputs and Syncfusion.Blazor.Themes. Alternatively, you can use the following Package Manager commands.

Install-Package Syncfusion.Blazor.Inputs -Version 32.1.19
Install-Package Syncfusion.Blazor.Themes -Version 32.1.19

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 Inputs 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 the .csproj file is located.
  • Run the following commands to install Syncfusion.Blazor.Inputs and Syncfusion.Blazor.Themes, and restore dependencies.
dotnet add package Syncfusion.Blazor.Inputs -v 32.1.19
dotnet add package Syncfusion.Blazor.Themes -v 32.1.19
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.Inputs namespaces.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Inputs

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

Refer to the Blazor Themes topic to discover available methods (Static Web Assets, CDN, and CRG) for referencing themes. See Adding Script Reference for approaches to adding script references. The script reference is required for component interactivity.

Add Syncfusion® Blazor OTP Input component

Add the Syncfusion Blazor OTP Input component to the ~/Pages/Index.razor file.

<SfOtpInput></SfOtpInput>