Getting Started with Blazor TextBox in Blazor Server App

27 Aug 20267 minutes to read

This section explains how to include the Blazor TextBox component in a Blazor Server app using Visual Studio, Visual Studio Code, and the .NET CLI.

Create a new Blazor Server App

Create a Blazor Server App using Visual Studio via Microsoft Templates or the Syncfusion® Blazor Extension. For detailed instructions, refer to the Blazor Server App Getting Started documentation.

Run the following command to create a new Blazor Server App.

dotnet new blazor -o BlazorApp --interactivity Server
cd BlazorApp

Alternatively, create a Blazor Server App using Visual Studio Code via Microsoft Templates, the Syncfusion® Blazor Extension, or the C# Dev Kit extension.

Run the following command to create a new Blazor Server App.

dotnet new blazor -o BlazorApp --interactivity Server
cd BlazorApp

Configure the appropriate Interactive render mode and Interactivity location while creating the Blazor Web App. For detailed information, refer to the interactive render mode documentation.

Install the required Blazor packages

Install Syncfusion.Blazor.Inputs and Syncfusion.Blazor.Themes NuGet packages. All Syncfusion Blazor packages are available on nuget.org. See the NuGet packages topic for details.

  1. Go to Tools → NuGet Package Manager → Manage NuGet Packages for Solution.
  2. Search the required NuGet packages (Syncfusion.Blazor.Inputs and Syncfusion.Blazor.Themes) and install them.

Alternatively, you can install the same packages using the Package Manager Console with the following commands.

Install-Package Syncfusion.Blazor.Inputs -Version 35.1.37
Install-Package Syncfusion.Blazor.Themes -Version 35.1.37

Open the terminal and run the following commands.

dotnet add package Syncfusion.Blazor.Inputs -v 35.1.37
dotnet add package Syncfusion.Blazor.Themes -v 35.1.37

Open the command prompt and run the following commands.

dotnet add package Syncfusion.Blazor.Inputs -v 35.1.37
dotnet add package Syncfusion.Blazor.Themes -v 35.1.37

Add import namespaces

After the packages are installed, open the ~/_Imports.razor file and import the Syncfusion.Blazor and Syncfusion.Blazor.Inputs namespaces.

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

Register the Blazor service

Open the Program.cs file in Blazor Server App and register the Blazor service and include the required namespace reference using Syncfusion.Blazor; at the top.

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 at the end of the <head> section in the App.razor file.

<link href="_content/Syncfusion.Blazor.Themes/fluent2.css" rel="stylesheet" />

Include the required script references at the end of the <body> section in the App.razor file to enable Blazor TextBox functionality.

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

Add Blazor TextBox component

Open a Razor file located in the ~/Pages/*.razor (for example, Home.razor) and add the Blazor TextBox component inside the razor file.

If the interactivity location is set to Per page/component, define a render mode at the top of the razor file (for example, @rendermode InteractiveServer). If the interactivity location is set to Global, the render mode is automatically configured in the App.razor file by default.

@rendermode InteractiveServer

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

Run the application

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

Open the terminal and run the following command.

dotnet run

Open the command prompt and run the following command.

dotnet run
Blazor TextBox component in Blazor Server

Adding icons to the Blazor TextBox

Add an icon to the Blazor TextBox component using the AddIconAsync method. The following example shows how to add an icon when the component is created.

<div id="sample" style="margin:130px auto;width:300px">
    <SfTextBox @ref=@TextBoxDropDownObj
               Created="@AddDateIcon"
               Placeholder="Enter Date"
               FloatLabelType="@FloatLabelType.Auto">
    </SfTextBox>
</div>


@code {
    SfTextBox TextBoxDropDownObj { get; set; }

    private async void AddDateIcon()
    {
        if (TextBoxDropDownObj != null)
        {
            //Add icon to the Blazor TextBox
            await TextBoxDropDownObj.AddIconAsync("append", "e-icons e-date-icon");
}
    }
}
Blazor TextBox with icon in Blazor Server

Floating label

The floating label moves above the input when the Blazor TextBox is focused or contains a value. Create a floating label Blazor TextBox by setting the FloatLabelType API.

<SfTextBox Placeholder='First Name' FloatLabelType='@FloatLabelType.Auto'></SfTextBox>
Blazor TextBox with floating label in Blazor Server

View sample in GitHub.

See also

  1. Getting Started with Blazor WebAssembly Standalone App
  2. Getting Started with Blazor Web App
  3. Native Events in Blazor TextBox Component
  4. Data Binding in Blazor TextBox Component