Create WhatsApp Groups Using C NET

January 10, 2025

In this tutorial, you will learn how to automate a WhatsApp group creation from Wassenger’s API with C#(.NET)

Hello! Are you ready to elevate your marketing strategy? Discover how creating WhatsApp groups with Wassenger and C#(.NET) can revolutionize how you connect with customers and boost sales. In this article, we’ll explore why this approach is not only smart but essential for building a community and keeping your audience engaged. Read on to learn how Wassenger simplifies the process and enhances your marketing efforts!

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Requirements

  • Have a WhatsApp number already linked to the platform and online.
  • Get your number unique ID given in Wassenger from here.

API endpoint

We will use the following API endpoint to create the group:

Prepare the request

Target API URL using the POST method

Test the API directly on your browser clicking here

https://api.wassenger.com/v1/devices/{deviceId}/groups

Required HTTPS headers > Obtain your API key here

Content-Type: application/json
Token: $API_TOKEN

Create a new group

// This code requires you to have installed RestSharp package. // Documentation: https://restsharp.dev // Installation: https://www.nuget.org/packages/RestSharp

var client = new RestClient("https://api.wassenger.com/v1/devices/${DEVICE\_ID}/groups"); var request = new RestRequest(Method.POST); request.AddHeader("Content-Type", "application/json"); request.AddHeader("Token", "API TOKEN GOES HERE"); request.AddParameter("application/json", "{\"name\":\"Group name\",\"description\":\"This is a group sample description\",\"participants\":[{\"phone\":\"+12345678902\",\"admin\":true},{\"phone\":\"+12345678902\",\"admin\":false}],\"permissions\":{\"edit\":\"admins\",\"send\":\"all\",\"invite\":\"admins\",\"approval\":false}}", ParameterType.RequestBody); IRestResponse response = client.Execute(request);

// This code uses the built-in HttpClient package in the .NET framework. // Documentation: https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient?view=net-6.0

using System.Net.Http.Headers; var client = new HttpClient(); var request = new HttpRequestMessage { Method = HttpMethod.Post, RequestUri = new Uri("https://api.wassenger.com/v1/devices/${DEVICE\_ID}/groups"), Headers = { { "Token", "API TOKEN GOES HERE" }, }, Content = new StringContent("{\"name\":\"Group name 2\",\"description\":\"This is a group sample description\",\"participants\":[{\"phone\":\"+12345678909\",\"admin\":true}],\"permissions\":{\"edit\":\"admins\",\"send\":\"all\",\"invite\":\"admins\",\"approval\":false}}") { Headers = { ContentType = new MediaTypeHeaderValue("application/json") } } }; using (var response = await client.SendAsync(request)) { response.EnsureSuccessStatusCode(); var body = await response.Content.ReadAsStringAsync(); Console.WriteLine(body); }

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Live API testing

You can live-test and play with the API directly from your browser.

Once you are done testing, get the auto-generated code example in your preferred programming language and you will be ready to go.

Try out our Live API tester with different code languages

FAQs

What are the best practices for avoiding failures when creating WhatsApp groups via API?

To minimize failures when creating WhatsApp groups, start with only one or two participants and only add a few at a time. After the group is successfully created, gradually add more members, limiting additions to 10 participants simultaneously using the ‘Add participants’ API endpoint. This approach helps prevent issues, especially if your WhatsApp number is already associated with many active chats.

Further useful resources

API Documentation

For more details about the endpoint API, please check the documentation where you will find all the details about the accepted request params, possible success or error responses and ready-to-use code examples in multiple programming languages:

https://app.wassenger.com/docs/#tag/Groups

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