.NET MAUI PromptInput Commands

Updated on May 19, 2026

The Telerik UI for .NET MAUI PromptInput control exposes a number of commands for notifying after user interactions such as sending messages, attaching files or photos, removing attached files, and handling speech recognition.

The PromptInput supports the following commands:

• SendMessageCommand (ICommand)—Executed when a message is sent, either when the Send Message button is pressed or when the Enter key is pressed. The command parameter is of type object and its value matches the value of the Message property.
• PickFileCommand (ICommand)—Opens the Microsoft.Maui.Storage.FilePicker so the end user can attach files for upload.
• PickPhotoCommand (ICommand)—Opens the Microsoft.Maui.Media.MediaPicker so the end user can attach photos for upload.
• TakePhotoCommand (ICommand)—Opens the device camera so the end user can capture and attach a photo.
• RemoveAttachedFileCommand (ICommand)—Executed when an attached file is removed from the PromptInput.
• SpeechRecognizedCommand (ICommand)—Executed when speech is recognized by the Speech-to-Text button.

Customizing the SendMessageCommand

To use the default command behavior of the SendMessageCommand when creating a custom one, inherit from the PromptInputSendCommand class and override the Execute method. This way, you can execute custom logic while still keeping the default behavior of:

• Clearing the input after sending a message.
• Stopping the speech-to-text recognition if it is active.
• Clearing the attached files collection.

The following example demonstrates how to create a custom send command:

C#

internal class SendMessageCommand : PromptInputSendCommand
{
    private readonly Action sendMessageAction;

    public SendMessageCommand(Action sendMessageAction)
    {
        this.sendMessageAction = sendMessageAction;
    }

    public override void Execute(object parameter)
    {
        base.Execute(parameter);
        this.sendMessageAction?.Invoke();
    }
}

See Also

• Getting Started
• Configuration
• Affix Content
• Visual Structure
• Styling