How to create 1:1 message program in C# to Teams

Corentin WADIN 0

Hello,

I'm developing a C# project and I need to be able to send Teams messages between users. I'm familiar with webhooks but sending a message in a channel doesn't work for me.

I'd like to know if I can use a user to send a DM to a specific user or if I can use a bot.

Thank you

Emma Kelly 0 Reputation points

2024-06-09T10:48:10.9933333+00:00
Hello!

Yes, you can use a bot or a user to send Direct Messages (DMs) in Microsoft Teams. Here are the options:

Using a Bot:

Create a bot in Microsoft Teams using the Microsoft Bot Framework.

Use the bot's SendActivityAsync method to send a message to a specific user.

You can also use the SendActivityAsync method to send a message to a channel, but you'll need to specify the channel ID.

Using a User:

You can use the Microsoft Graph API to send a message to a specific user.

You'll need to authenticate your application using Azure AD and obtain an access token.

Use the POST /users/{userId}/messages endpoint to send a message to a specific user.

Here's a simple example of how you can use the Microsoft Graph API to send a message to a specific user:

using Microsoft.Graph; using Microsoft.Graph.Requests; // Initialize the Graph client var graphClient = new GraphServiceClient( new DelegateAuthenticationProvider( async (requestMessage) => { // Get the access token var token = await GetAccessToken(); // Add the access token to the request requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token); })); // Send a message to a specific user var message = new Message { Body = new ItemBody { Content = "Hello, this is a test message!" }, ToRecipients = new[] { new Recipient { EmailAddress = new EmailAddress { Address = "user1@example.com" } } } }; var response = await graphClient.Users["user1@example.com"].Messages.Request().AddAsync(message);

Remember to replace "user1@example.com" with the actual email address of the user you want to send the message to.

I hope this helps this will solve your issue

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How to create 1:1 message program in C# to Teams