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Getting Started with Blazor SpeechToText in Blazor Web App
14 Apr 20267 minutes to read
This section briefly explains about how to include Syncfusion® Blazor SpeechToText component in your Blazor Web App using Visual Studio, Visual Studio Code, and the .NET CLI.
Prerequisites
Create a new Blazor Web App in Visual Studio
Create a Blazor Web App using Visual Studio via Microsoft Templates or the Syncfusion® Blazor Extension. For detailed instructions, refer to the Blazor Web App Getting Started documentation.
Prerequisites
Create a new Blazor Web App in Visual Studio Code
Create a Blazor Web App using Visual Studio Code via Microsoft Templates or the Syncfusion® Blazor Extension. For detailed instructions, refer to the Blazor Web App Getting Started documentation.
For example, in a Blazor Web App with the Auto interactive render mode, use the following commands in the integrated terminal (Ctrl+`):
dotnet new blazor -o BlazorWebApp -int Auto
cd BlazorWebApp
cd BlazorWebApp.ClientPrerequisites
Install the latest version of .NET SDK. If you previously installed the SDK, determine the installed version by executing the following command in a command prompt (Windows) or terminal (macOS) or command shell (Linux).
dotnet --versionCreate a Blazor Web App using .NET CLI
Run the following command to create a new Blazor Web App in a command prompt (Windows) or terminal (macOS) or command shell (Linux). For detailed instructions, refer to the Blazor Web App Getting Started documentation.
For example, in a Blazor Web App with the Auto interactive render mode, use the following commands:
dotnet new blazor -o BlazorWebApp -int Auto
cd BlazorWebApp
cd BlazorWebApp.ClientNOTE
Configure the appropriate Interactive render mode and Interactivity location while creating a Blazor Web App. For detailed information, refer to the interactive render mode documentation.
Install Syncfusion® Blazor packages
Install Syncfusion.Blazor.Inputs NuGet package in your project using the NuGet Package Manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), or the integrated terminal in Visual Studio Code (dotnet add package), or the .NET CLI.
Alternatively, run the following command in the Package Manager Console to achieve the same.
Install-Package Syncfusion.Blazor.Inputs -Version 33.1.44If using the WebAssembly or Auto render modes in the Blazor Web App, install this package in the client project.
NOTE
All Syncfusion Blazor packages are available on nuget.org. See the NuGet packages topic for details.
Add import namespaces
After the packages are installed, open the ~/_Imports.razor file in the client project and import the Syncfusion.Blazor and Syncfusion.Blazor.Inputs namespaces.
@using Syncfusion.Blazor
@using Syncfusion.Blazor.InputsRegister Syncfusion® Blazor service
Register the Syncfusion Blazor service in the Program.cs file of your Blazor Web App.
....
using Syncfusion.Blazor;
....
builder.Services.AddSyncfusionBlazor();
....NOTE
If the Interactive Render Mode is set to
WebAssemblyorAuto, register the Syncfusion® Blazor service in Program.cs files of both the server and client projects in your Blazor Web App.
Add script resources
The script can be accessed from NuGet through Static Web Assets. Include the script reference in the ~/Components/App.razor file.
<script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>NOTE
Check out the Adding Script Reference topic to learn different approaches for adding script references in your Blazor application.
Add Syncfusion® Blazor SpeechToText component
Add the Syncfusion® Blazor SpeechToText component in the ~/Components/Pages/*.razor file. If the interactivity location is set to Per page/component in the Web App, define a render mode at the top of the ~/Pages/*.razor file. (For example, InteractiveServer, InteractiveWebAssembly or InteractiveAuto).
NOTE
If the Interactivity Location is set to
GlobalwithAutoorWebAssembly, the render mode is automatically configured in theApp.razorfile by default.
@* desired render mode define here *@
@rendermode InteractiveAuto@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 the 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
};
}
