Microsoft Bot Builder - send proactive message to user

Question

I am trying to create a to-do app for microsoft Teams. Whenever a new task is created inside a team, this task is saved to team's sharepoint and i want to use a chat bot to notify all members of this team that " a new task is created". The flow is somehow like Planner. If you are assigned to task in Planner, you'll receive immediately a message from Planner chat bot. Does any have idea, how can I implement this?

Answer 1

In essence, if you're not replying directly to an existing message, and you want to send a message at another later time from your bot, then it's referred to as "pro-active messaging", as you've said in the title. To do this, you need to capture certain information when the bot is added to the team (things like a "conversation reference", serviceurl, and a few other bits of info as well). I've described more about this, with links and sample code, over at Programmatically sending a message to a bot in Microsoft Teams. Of course, start first with the docs themselves, such as Send Proactive Message.