How to write a Whatsapp bot in C#

In this guide, we will tell you how to create a WhatsApp bot in C# using our WhatsApp API gateway. 

This bot will respond to commands that come to it in the form of regular messages in WhatsApp and respond to them. The functionality of the test bot will be limited to the following functions:

- Response with a welcome text to a message that the bot does not have a command for. Displaying the bot menu
- Output of the current chat ID (in the BOS or in a conversation)
- Sending files of various formats (pdf, jpg, doc, mp3, etc.)
- Sending voice messages (*. ogg files)
- Sending geolocation
- Create a separate group with the interlocutor and the bot

You can find the full guide on our website:
Creating a Whatsapp bot in C# | Guide (

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The Most Multifunctional WhatsApp API Provider

Chat API has been operating since 2015 and is one of the first and largest providers in Eastern Europe.

Here are some curious and important figures:

  • We have tremendous expertise in docker container management at scale with an SLA of 99.5+%;
  • Chat API involves in its work more than 200 servers, with the ability to quickly connect another 100;
  • 3200 cores and 25 terabytes of RAM;
  • 200+ WhatsApp methods and features that keep adding;
  • Highload system, Up Time servers 99.9%;
  • Support 24\7;
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