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Create messages with the Bot Connector API

APPLIES TO: SDK v3

Your bot will send Activity objects of type message to communicate information to users, and likewise, will also receive message activities from users. Some messages may simply consist of plain text, while others may contain richer content such as text to be spoken, suggested actions, media attachments, rich cards, and channel-specific data. This article describes some of the commonly-used message properties.

Message text and formatting

Message text can be formatted using plain, markdown, or xml. The default format for the textFormat property is markdown and interprets text using Markdown formatting standards. The level of text format support varies across channels.

Tip

For tables describing which features are supported on each channel, see the channels reference article.

The textFormat property of the Activity object can be used to specify the format of the text. For example, to create a basic message that contains only plain text, set the textFormat property of the Activity object to plain, set the text property to the contents of the message and set the locale property to the locale of the sender.

Attachments

The attachments property of the Activity object can be used to send simple media attachments (image, audio, video, file) and rich cards. For details, see Add media attachments to messages and Add rich cards to messages.

Entities

The entities property of the Activity object is an array of open-ended schema.org objects that allows the exchange of common contextual metadata between the channel and bot.

Mention entities

Many channels support the ability for a bot or user to "mention" someone within the context of a conversation. To mention a user in a message, populate the message's entities property with a Mention object.

Place entities

To convey location-related information within a message, populate the message's entities property with Place object.

Channel data

The channelData property of the Activity object can be used to implement channel-specific functionality. For details, see Implement channel-specific functionality.

Text to speech

The speak property of the Activity object can be used to specify the text to be spoken by your bot on a speech-enabled channel and the inputHint property of the Activity object can be used to influence the state of the client's microphone. For details, see Add speech to messages and Add input hints to messages.

Suggested actions

The suggestedActions property of the Activity object can be used to present buttons that the user can tap to provide input. Unlike buttons that appear within rich cards (which remain visible and accessible to the user even after being tapped), buttons that appear within the suggested actions pane will disappear after the user makes a selection. For details, see Add suggested actions to messages.

Additional resources