CSharp-Coder

Learn how to use Azure OpenAI in C# with practical code examples. Integrate GPT-4o into your .NET app with streaming, function calling, and best practices. Azure OpenAI C# Tutorial — Build AI-Powered .NET Applications with GPT-4o If you want to add AI capabilities to your .NET application, Azure OpenAI with C# is the most production-ready path available today. Unlike calling the OpenAI API directly, Azure OpenAI gives you enterprise-grade security, regional data residency, private networking, and the same powerful models — including GPT-4o — running inside your own Azure subscription. In this tutorial, you will learn how to integrate GPT-4o into a C# application from scratch. We will cover setup, basic chat completions, streaming responses, function calling, and the best practices that separate hobby projects from production systems. Every code example is runnable so you can follow along in Visual Studio or VS Code. Prerequisites — What You Need Before Writing Code ...