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C# Exception Handling Best Practices (2026 Guide)

Learn C# exception handling best practices: custom exceptions, global handlers with IExceptionHandler, and structured logging in .NET. Read the guide now! C# exception handling is one of the first things you learn in .NET and one of the last things you master. Most developers can write a try-catch block. Fewer can build a system where errors are caught in the right place, logged with enough context to fix them, and shown to users as safe, consistent responses. In this guide we cover C# exception handling best practices for .NET 8, 9 and 10: when to throw, when to catch, how to design custom exceptions, how to set up a global exception handler in ASP.NET Core, and how to log exceptions so they help you in production. Whether you're a beginner looking up "try catch C#" or a senior engineer standardizing error handling across microservices, you'll find runnable code and the reasoning behind each recommendation. What Is Exception Handling in C#? An exception ...