Send PDF Files to Telegram Groups in C# (Visual Studio 2022) - Complete Guide

Automate Telegram Group Document Sharing with C# and VS2022

Need to integrate Telegram group PDF sharing into your modern C# applications using Visual Studio 2022? This guide shows you how to deliver PDF files to Telegram groups using C# with modern .NET libraries and the WhatsMate Telegram Gateway REST API. Perfect for C# developers building contemporary applications with Visual Studio 2022 that need document delivery to group chats.

📋 Prerequisites

Before you begin, ensure you have:

1. A WhatsMate Telegram Gateway account - Required for API access
2. Group membership - The gateway must be a member of the target Telegram group
3. Visual Studio 2022 - Installed and configured for C# development
4. PDF file ready - Have the document you want to send available locally
5. .NET 6.0+ or .NET Core 3.1+ - Required for System.Text.Json support

⚠️ Important: The gateway must be a member of the Telegram group you want to send messages to. The group admin phone number is used to uniquely identify the group.

📄 Visual Studio Version: This tutorial is specifically for Visual Studio 2022 with modern .NET. If you’re using Visual Studio 2019, please refer to the VS2019 tutorial.

🎥 Video Walkthrough

📝 Step-by-Step Implementation

Follow these steps to send your first PDF document to a Telegram group from a C# application in Visual Studio 2022:

1. Set Up Your Visual Studio 2022 Project

Create a new C# Console Application in Visual Studio 2022:

1. Open Visual Studio 2022
2. Click “Create a new project”
3. Select “Console App” (not “Console App (.NET Framework)”)
4. Name your project and click “Create”
5. Ensure target framework is .NET 6.0 or later

2. Copy the C# Source Code

Replace the contents of Program.cs with the following source code:

3. Configure a few Parameters

Customize these key parameters in the C# code:

• Line 10: Replace "YOUR_INSTANCE_ID" with your Telegram gateway instance ID
• Line 11: Replace "YOUR_CLIENT_ID_HERE" with your Client ID
• Line 12: Replace "YOUR_CLIENT_SECRET_HERE" with your Client Secret
• Line 21: Replace "Muscle Men Club" with the name of your target Telegram group
• Line 22: Replace "19159876123" with the phone number of the group admin (including country code)
• Line 25: Replace "C:\\TEMP\\subwaymap.pdf" with the path to your PDF file
• Line 26: Replace "anyname.pdf" with the desired filename for the document
• Line 27: Replace "Check this out" with an optional caption for your PDF

4. Build and Run Your Application

1. Press F5 or click “Start” to build and run your application
2. The console will display the API response from the Telegram Gateway
3. Check your Telegram group to confirm the PDF was delivered successfully

🔧 Common Use Cases

This C# integration with Visual Studio 2022 is ideal for:

• Modern .NET applications - Add Telegram group PDF sharing to contemporary C# applications
• Cloud-native solutions - Integrate with Azure Functions, AWS Lambda, or other cloud services
• Microservices architecture - Add document delivery capabilities to .NET microservices
• Cross-platform applications - Build PDF sharing into applications targeting Windows, Linux, or macOS
• Modern web APIs - Integrate with ASP.NET Core web applications for document delivery

🚀 Get Started Today

Ready to integrate Telegram group PDF sharing into your C# applications with Visual Studio 2022? You’ll need a trial account to access the API. Sign up for a 2-week trial and start sending PDF documents to groups from your C# code within minutes!

Next Steps: Once you’ve mastered group PDF sending, explore advanced features like sending images to groups, audio files to groups, or individual messages through the WhatsMate Telegram Gateway API documentation.