Coding⏱️ 2 min read📅 2026-05-31

How to Fix: ASP.NET Core Web API exception handling

Use the built-in ASP.NET Core exception handling features, such as the ExceptionFilterAttribute and IExceptionFilter interfaces.

Quick Answer: Implement a custom exception filter to handle exceptions in ASP.NET Core Web API.

ASP.NET Core Web API exception handling can be challenging, but there are ways to improve it.

⚠️ Common Causes

  • Insufficient error handling configuration
  • Lack of logging or monitoring

✅ Best Solutions to Fix It

Method 1: Implementing the Built-in Exception Filter

  1. Step 1: Create a custom exception filter class that inherits from ExceptionFilterAttribute.

Method 2: Using the Built-in Exception Filter

  1. Step 1: Register the built-in exception filter in the Startup.cs file.

✨ Wrapping Up

Proper exception handling is crucial for a robust and reliable Web API. By implementing the built-in exception filter or creating a custom exception filter, you can improve your application's error handling capabilities.

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