Messaging Extensions are a special kind of Microsoft Teams application that is support by the Bot Framework v4.
There are two basic types of Messaging Extension in Teams: Search-based and Action-based. This sample illustrates how to build a Search-based Messaging Extension.
- Microsoft Teams is installed and you have an account
- .NET Core SDK version 3.1
- ngrok or equivalent tunnelling solution
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.
-
Clone the repository
git clone https://github.com/Microsoft/botbuilder-samples.git
-
If you are using Visual Studio
- Launch Visual Studio
- File -> Open -> Project/Solution
- Navigate to
samples/csharp_dotnetcore/50.teams-messaging-extensions-search
folder - Select
TeamsMessagingExtensionsSearch.csproj
file
-
Run ngrok - point to port 3978
ngrok http -host-header=rewrite 3978
-
Create Bot Framework registration resource in Azure
- Use the current
https
URL you were given by running ngrok. Append with the path/api/messages
used by this sample - Ensure that you've enabled the Teams Channel
- If you don't have an Azure account you can use this Bot Framework registration
- Use the current
-
Update the
appsettings.json
configuration for the bot to use the Microsoft App Id and App Password from the Bot Framework registration. (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.) -
This step is specific to Teams.
- Edit the
manifest.json
contained in theteamsAppManifest
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 themanifest.json
) - Zip up the contents of the
teamsAppManifest
folder to create amanifest.zip
- Upload the
manifest.zip
to Teams (in the Apps view click "Upload a custom app")
- Edit the
-
Run your bot, either from Visual Studio with
F5
or usingdotnet run
in the appropriate folder.
Note this
manifest.json
specified that the feature will be available from both thecompose
andcommandBox
areas of Teams. Please refer to Teams documentation for more details.
In Teams, the command bar is located at the top of the window. When you at mention the bot what you type is forwarded (as you type) to the bot for processing. By way of illustration, this sample uses the text it receives to query the NuGet package store.
There is a secondary, drill down, event illustrated in this sample: clicking on the results from the initial query will result in the bot receiving another event.
To learn more about deploying a bot to Azure, see Deploy your bot to Azure for a complete list of deployment instructions.