# SpeechToTextButton Events

The SpeechToTextButton component emits events that notify you about speech recognition results, errors, and state changes. Use these events to update the UI, display messages, or process the recognized speech.

## OnResult

The `OnResult` event fires when the component recognizes speech and produces a result. Use this event to access the recognized phrases, alternatives, and confidence scores.

To review all available properties of the event arguments for `OnResult`, see the [`SpeechToTextButtonResultEventArgs` API Reference](https://docs.telerik.com/blazor-ui/api/Telerik.Blazor.Components.SpeechToTextButtonResultEventArgs.html).

> caption Example: Displaying recognized Alternatives and Confidence

<demo metaUrl="client/speechtotextbutton/onresult/" height="300"></demo>

## OnStart and OnEnd

The `OnStart` event fires when speech recognition starts. The `OnEnd` event fires when speech recognition ends. Use these events to update the UI or track the recognition state.

> caption Example: Indicating listening state

<demo metaUrl="client/speechtotextbutton/onstartend/" height="300"></demo>

## OnError

The `OnError` event fires when an error occurs during speech recognition. Use this event to display error messages to the user.

## OnClick

The `OnClick` event fires when the user clicks or taps the button. It receives argument of type `MouseEventArgs`.

## See Also

* [SpeechToTextButton Overview](https://www.telerik.com/blazor-ui/documentation/components/speechtotextbutton/overview)
* [SpeechToTextButton Appearance](https://www.telerik.com/blazor-ui/documentation/components/speechtotextbutton/appearance)
* [SpeechToTextButton Integration](https://www.telerik.com/blazor-ui/documentation/components/speechtotextbutton/integration)