API Reference > imodeljs-frontend > Notifications > NotificationManager > openMessageBox openMessageBox Method Output a MessageBox and wait for response from the user. openMessageBox(_mbType: MessageBoxType, _message: HTMLElement | string, _icon: MessageBoxIconType): Promise<MessageBoxValue> Parameter Type Description _mbType MessageBoxType The MessageBox type. _message HTMLElement | string The message to display. _icon MessageBoxIconType The MessageBox icon type. Returns - Promise<MessageBoxValue> the response from the user. Defined in core/frontend/src/NotificationManager.ts Line 196 Last Updated: 13 June, 2024