Getting Started with Blazor TextBox in Blazor Web App

16 Feb 20244 minutes to read

This section briefly explains about how to include Blazor TextBox component in your Blazor Web App using Visual Studio.

Prerequisites

System requirements for Blazor components

Create a new Blazor Web App

You can create a Blazor Web App using Visual Studio 2022 via Microsoft Templates or the Syncfusion Blazor Extension.

You need to configure the corresponding Interactive render mode and Interactivity location while creating a Blazor Web Application.

Install Syncfusion Blazor Inputs and Themes NuGet in the App

To add Blazor TextBox 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.Inputs and Syncfusion.Blazor.Themes.

If you utilize WebAssembly or Auto render modes in the Blazor Web App need to be install Syncfusion Blazor components NuGet packages within the client project.

Alternatively, you can utilize the following package manager command to achieve the same.

Package Manager
Install-Package Syncfusion.Blazor.Inputs -Version 25.1.35
Install-Package Syncfusion.Blazor.Themes -Version 25.1.35

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.Inputs namespace .

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

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

If you select an Interactive render mode as WebAssembly or Auto, you need to register the Syncfusion Blazor service in both ~/Program.cs files of your Blazor Web App.

....
using Syncfusion.Blazor;
....
builder.Services.AddSyncfusionBlazor();
....

Add stylesheet and script resources

The theme stylesheet and script can be accessed from NuGet through Static Web Assets. Include the stylesheet reference in the <head> section and the script reference at the end of the <body> in the ~/Components/App.razor file as shown below:

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

<body>
    ....
    <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</body>

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 Syncfusion Blazor TextBox component

Add the Syncfusion Blazor TextBox component in the ~Pages/.razor file. If an interactivity location as Per page/component in the web app, define a render mode at the top of the ~Pages/.razor component, as follows:

RAZOR

@* desired render mode define here *@
@rendermode InteractiveAuto

RAZOR
<SfTextBox Placeholder='First Name'></SfTextBox>

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

NOTE

View Sample in GitHub.

Adding icons to the Blazor TextBox

A TextBox can be created with icon as a group by creating the parent div element with the class e-input-group and add the icon element as span with the class e-input-group-icon.

RAZOR
<div class='e-input-group'>
    <input class='e-input' Placeholder='Date of Birth' type='text'>
    <span class='e-input-group-icon e-input-calendar'></span>
</div>

<style>
.e-input-group-icon:before {
  font-family: e-icons;
}

.e-input-group .e-input-group-icon.e-input-calendar {
  font-size: 16px;
}

.e-input-group-icon.e-input-calendar:before {
  content: "\e75e";
}
</style>

Floating label

The floating label TextBox floats the label above the TextBox after focusing, or filled with value in the TextBox. The floating label TextBox can be created by using the FloatLabelType API.

RAZOR
<SfTextBox Placeholder='First Name' FloatLabelType='@FloatLabelType.Auto'></SfTextBox>