Send Images to Telegram Groups in C#/.NET (Visual Studio 2022) - Complete Guide

Automate Telegram Group Image Sharing with C#/.NET and Visual Studio 2022

Need to integrate Telegram group image sharing into your modern .NET applications, Windows services, or enterprise solutions using the latest Visual Studio IDE? This guide shows you how to deliver images to Telegram groups using C# with Visual Studio 2022 and the WhatsMate Telegram Gateway REST API. Perfect for .NET developers building modern Windows applications, enterprise systems, or .NET services that need visual content delivery to group chats.

Note for Visual Studio 2019 users: If you’re using Visual Studio 2019, please read this Visual Studio 2019 tutorial instead.

📋 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 - Latest .NET development environment with modern C# features
4. Image file ready - Have the image you want to send available locally
5. Modern .NET framework - .NET 6 or later recommended for System.Text.Json support
6. Basic C# knowledge - Familiarity with C# programming and .NET framework

⚠️ 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.

🎥 Video Walkthrough

📝 Step-by-Step Implementation

Follow these steps to send your first image to a Telegram group from a C# application using Visual Studio 2022:

1. Set Up Visual Studio 2022 Project

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

1. Create new project: File → New → Project → Console App
2. Select .NET version: Choose .NET 6.0 or later for System.Text.Json support
3. Verify modern references: Ensure System.Text.Json is available (included by default in .NET 6+)

2. Copy the C# Source Code

Copy the following source code into your C# file, replacing the default Program.cs content:

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\\cute-girl.jpg" with the full path to your image file
• Line 26: Replace "Lovely Girl" with an optional caption for your image

4. Build and Run

Compile and execute your C# application:

1. Build the solution: Press Ctrl+Shift+B or go to Build → Build Solution
2. Run the application: Press F5 or go to Debug → Start Debugging
3. Check the output: The console will display the response from the Telegram Gateway

🔧 Common Use Cases

This modern C# integration is ideal for:

• Modern Windows application integration - Add Telegram group image sharing to .NET 6+ desktop applications
• Enterprise system notifications - Send visual alerts or reports from modern business systems to team groups
• .NET 6+ service integration - Integrate with modern Windows Services or ASP.NET Core applications for automated image delivery
• Cloud-native applications - Combine with cloud-based .NET solutions for scalable image delivery to Telegram groups
• Legacy system modernization - Upgrade existing .NET applications to use modern serialization and Telegram integration

🚀 Get Started Today

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

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