Getting Started with Blazor SpeechToText in Blazor WASM App
21 Mar 20255 minutes to read
This section briefly explains about how to include Blazor SpeechToText component in your Blazor WASM App using Visual Studio and Visual Studio Code.
Prerequisites
Create a new Blazor App in Visual Studio
You can create a Blazor WebAssembly App using Visual Studio via Microsoft Templates or the Syncfusion Blazor Extension.
Install Syncfusion Blazor Inputs NuGet in the App
To add Blazor SpeechToText 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. Alternatively, you can utilize the following package manager command to achieve the same.
Install-Package Syncfusion.Blazor.Inputs -Version 29.1.33NOTE
Syncfusion Blazor components are available in nuget.org. Refer to NuGet packages topic for available NuGet packages list with component details.
Prerequisites
Create a new Blazor App in Visual Studio Code
You can create a Blazor WebAssembly App using Visual Studio Code via Microsoft Templates or the Syncfusion® Blazor Extension.
Alternatively, you can create a WebAssembly application using the following command in the terminal(Ctrl+`).
dotnet new blazorwasm -o BlazorApp
cd BlazorAppInstall Syncfusion® Blazor Inputs 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
.csprojfile is located. - Run the following command to install a Syncfusion.Blazor.Inputs NuGet package and ensure all dependencies are installed.
dotnet add package Syncfusion.Blazor.Inputs -v 29.1.33
dotnet restoreNOTE
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 namespace.
@using Syncfusion.Blazor
@using Syncfusion.Blazor.InputsNow, 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 script resources
The script can be accessed from NuGet through Static Web Assets. Reference the script in the <head> of the main page as follows:
- For Blazor WebAssembly app, include it in the ~/index.html file.
<head>
....
<script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>NOTE
Check out the Adding Script Reference topic to learn different approaches for adding script references in your Blazor application.
Adding Blazor SpeechToText component
Add the Syncfusion® Blazor SpeechToText component in the ~/Pages/Index.razor file.
@using Syncfusion.Blazor.Inputs
<div class="speechtext-container">
<SfSpeechToText @bind-Transcript="@transcript"></SfSpeechToText>
<SfTextArea RowCount="5" ColumnCount="50" @bind-Value="@transcript" ResizeMode="Resize.None" Placeholder="Transcribed text will be shown here..."></SfTextArea>
</div>
<style>
.speechtext-container {
margin: 50px auto;
gap: 20px;
display: flex;
flex-direction: column;
align-items: center;
}
</style>
@code {
string transcript = "";
}- Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. This will render the Syncfusion® Blazor SpeechToText component in your default web browser.
The SpeechToText component requires an internet connection and using a browser that supports SpeechRecognition from the Web Speech API.
Adding button content
You can use the Text property to display the start listening text and StopStateText property to display the stop listening text by using the ButtonSettings property.
@using Syncfusion.Blazor.Inputs
<div class="speechtext-container">
<SfSpeechToText ButtonSettings="@buttonSettings" @bind-Transcript="@transcript"></SfSpeechToText>
<SfTextArea RowCount="5" ColumnCount="50" @bind-Value="@transcript" ResizeMode="Resize.None" Placeholder="Transcribed text will be shown here..."></SfTextArea>
</div>
<style>
.speechtext-container {
margin: 50px auto;
gap: 20px;
display: flex;
flex-direction: column;
align-items: center;
}
</style>
@code {
string transcript = "";
SpeechToTextButtonSettings buttonSettings = new SpeechToTextButtonSettings()
{
Text = "Start Listening", // Displays when idle
StopStateText = "Stop Listening" // Displays when speech recognition is active
};
}
