Teams Message Reactions Bot C# Sample

Code Sample
10/14/2024

This sample app demonstrates the implementation of message reactions in Microsoft Teams using the Bot Framework. The bot responds dynamically to reactions, supporting personal, group, and team scopes, and is compatible with adaptive cards. It can be run locally with .NET SDK and tunneling solutions or deployed to Azure for broader use.

Included Features

Bots
Adaptive Cards

Interaction with bot

bot-message-reaction

Try it yourself - experience the App in your Microsoft Teams client

Please find below demo manifest which is deployed on Microsoft Azure and you can try it yourself by uploading the app manifest (.zip file link below) to your teams and/or as a personal app. (Sideloading must be enabled for your tenant, see steps here).

Teams Message Reactions Bot: Manifest

Prerequisites

Microsoft Teams is installed and you have an account
.NET SDK version 6.0
dev tunnel or ngrok latest version or equivalent tunnelling solution

Run the app (Using Teams Toolkit for Visual Studio)

The simplest way to run this sample in Teams is to use Teams Toolkit for Visual Studio.

Install Visual Studio 2022 Version 17.10 Preview 4 or higher Visual Studio
Install Teams Toolkit for Visual Studio Teams Toolkit extension
In the debug dropdown menu of Visual Studio, select Dev Tunnels > Create A Tunnel (set authentication type to Public) or select an existing public dev tunnel.
In the debug dropdown menu of Visual Studio, select default startup project > Microsoft Teams (browser)
In Visual Studio, right-click your TeamsApp project and Select Teams Toolkit > Prepare Teams App Dependencies
Using the extension, sign in with your Microsoft 365 account where you have permissions to upload custom apps.
Select Debug > Start Debugging or F5 to run the menu in Visual Studio.
In the browser that launches, select the Add button to install the app to Teams.

If you do not have permission to upload custom apps (sideloading), Teams Toolkit will recommend creating and using a Microsoft 365 Developer Program account - a free program to get your own dev environment sandbox that includes Teams.

Setup

Note these instructions are for running the sample on your local machine, the tunnelling solution is required because the Teams service needs to call into the bot.

Run ngrok - point to port 3978
```
ngrok http 3978 --host-header="localhost:3978"
```
Alternatively, you can also use the dev tunnels. Please follow Create and host a dev tunnel and host the tunnel with anonymous user access command as shown below:
```
devtunnel host -p 3978 --allow-anonymous
```
Setup for Bot

In Azure portal, create a Azure Bot resource.
- For bot handle, make up a name.
- Select "Use existing app registration" (Create the app registration in Microsoft Entra ID beforehand.)
- If you don't have an Azure account create an Azure free account here
In the new Azure Bot resource in the Portal,
- Ensure that you've enabled the Teams Channel
- In Settings/Configuration/Messaging endpoint, enter the current https URL you were given by running the tunneling application. Append with the path /api/messages

Clone the repository

git clone https://github.com/OfficeDev/Microsoft-Teams-Samples.git

If you are using Visual Studio
- Launch Visual Studio
- File -> Open -> Project/Solution
- Navigate to samples/bot-message-reaction/csharp folder
- Select MessageReaction.csproj or MessageReaction.slnfile
Update the appsettings.json configuration for the bot to use the MicrosoftAppId, MicrosoftAppPassword, MicrosoftAppTenantId generated in Step 2 (App Registration creation). (Note the App Password is referred to as the "client secret" in the azure portal and you can always create a new client secret anytime.)
- Also, set MicrosoftAppType in the appsettings.json. (Allowed values are: MultiTenant(default), SingleTenant, UserAssignedMSI)
Run your bot, either from Visual Studio with F5 or using dotnet run in the appropriate folder.
This step is specific to Teams.
- Edit the manifest.json contained in the appPackage folder to replace your Microsoft App Id (that was created when you registered your bot earlier) everywhere you see the place holder string <<YOUR-MICROSOFT-APP-ID>> (depending on the scenario the Microsoft App Id may occur multiple times in the manifest.json)
- Edit the manifest.json for validDomains with base Url domain. E.g. if you are using ngrok it would be https://1234.ngrok-free.app then your domain-name will be 1234.ngrok-free.app and if you are using dev tunnels then your domain will be like: 12345.devtunnels.ms.
- Zip up the contents of the appPackage folder to create a manifest.zip (Make sure that zip file does not contains any subfolder otherwise you will get error while uploading your .zip package)
- Upload the manifest.zip to Teams (In Teams Apps/Manage your apps click "Upload an app". Browse to and Open the .zip file. At the next dialog, click the Add button.)
- Add the app in personal/groupchat/team scope (supported scopes)