Events

Updated on Aug 5, 2026

This topic covers the specific events exposed by the RadInlineAIAssistant control.

PromptRequest

The PromptRequest event is raised when the end user submits the prompt input or selects a command from the Commands dropdown. The event arguments are of type InlineAIAssistantPromptRequestEventArgs and expose the following members:

• Prompt—Gets the prompt text that was requested by the user (the input text, or the selected command's Text).
• SelectedText—Gets the currently selected text in the target element, as reported by the current InteractionProvider.
• FullText—Gets the full text of the target element, as reported by the current InteractionProvider.
• SetResponse(string)—Sets a single, immediate response text.
• SetResponse(IAsyncEnumerable<string>)—Sets a stream of response chunks that are appended as they arrive.

Read more about setting an immediate or a streamed response in the Handling Responses article.

Using the PromptRequest event to set a response

C#

private void OnPromptRequest(object sender, InlineAIAssistantPromptRequestEventArgs e)
{
    // Pass e.Prompt (and, optionally, e.SelectedText / e.FullText) to your AI model.
    e.SetResponse("This is a sample AI-generated response.");
}

Opening

The Opening event occurs before a particular instance of RadInlineAIAssistant opens. It is raised only when the assistant is opened through an attached-element trigger—a touch tap-and-hold-then-release gesture on the target element, or an event named in the OpeningEventName property—and is not raised when the IsOpen property is set directly. Setting Handled to true in the handler prevents the assistant from opening.

Canceling the Opening event

C#

private void OnAssistantOpening(object sender, RadRoutedEventArgs e)
{
    e.Handled = true;
}

Opened

The Opened event occurs when a particular instance of RadInlineAIAssistant opens, regardless of whether it was opened through the attached-element trigger or by setting IsOpen directly.

Using the Opened event

C#

private void OnAssistantOpened(object sender, RadRoutedEventArgs e)
{
}

Closed

The Closed event occurs when a particular instance of RadInlineAIAssistant closes, regardless of whether it was closed through user interaction (for example, pressing Escape or clicking outside of it) or by setting IsOpen directly.

Using the Closed event

C#

private void OnAssistantClosed(object sender, RadRoutedEventArgs e)
{
}

See Also

• Getting Started
• Configuring Interaction Providers
• Configuring Commands
• Handling Responses