Master Global Exception Handling with IExceptionHandler in .NET

Tired of dealing with scattered exception handling in your .NET application?

Say goodbye to those frustrating error logs and unpredictable crashes. Welcome to the world of seamless, centralized exception management with IExceptionHandler.

Why do you need Global exception handling?

Global exception handling is your safety net, ensuring that your application gracefully handles unexpected errors. Instead of leaving users hanging with cryptic error messages, you can provide clear, consistent responses and maintain a polished user experience.

Introducing the IExceptionHandler Middleware

With our custom GlobalExceptionHandlerMiddleware, managing exceptions has never been easier. This powerful tool catches and handles exceptions globally, ensuring your application runs smoothly and your users stay happy.

Key Features

1. Centralized Control: Manage all exceptions from one place, reducing complexity and improving maintainability.
2. Consistent Responses: Ensure every error is handled uniformly, enhancing the user experience with clear and professional messages.
3. Enhanced Logging: Keep a comprehensive log of all exceptions, making debugging and monitoring a breeze.
4. Easy Integration: Seamlessly integrate the middleware into your .NET application with minimal setup.

How to implement IExceptionHandler in your .NET App?
 

Step 1. Create the Middleware

using Microsoft.AspNetCore.Diagnostics;
namespace ErrorHandlingSample
{
    public class CustomExceptionHandler : IExceptionHandler
    {
        private readonly ILogger<CustomExceptionHandler> logger;
        public CustomExceptionHandler(ILogger<CustomExceptionHandler> logger)
        {
            this.logger = logger;
        }
        public ValueTask<bool> TryHandleAsync(
            HttpContext httpContext,
            Exception exception,
            CancellationToken cancellationToken)
        {
            var exceptionMessage = exception.Message;
            logger.LogError(
                "Error Message: {exceptionMessage}, Time of occurrence {time}",
                exceptionMessage, DateTime.UtcNow);
            // Return false to continue with the default behavior
            // - or - return true to signal that this exception is handled
            return ValueTask.FromResult(false);
        }
    }
}

Step 2. Register the Middleware

using ErrorHandlingSample;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddDatabaseDeveloperPageExceptionFilter();
builder.Services.AddRazorPages();
// Registering CustomExceptionHandler
builder.Services.AddExceptionHandler<CustomExceptionHandler>();
var app = builder.Build();
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
}
// Remaining Program.cs code omitted for brevity

Benefits of Using IExceptionHandler

• Centralized Exception Handling: Simplify your error management.
• Consistent Responses: Provide a unified user experience.
• Improved Logging: Easily monitor and debug issues.
• Separation of Concerns: Keep your code clean and maintainable.

Conclusion

Implementing global exception handling with IExceptionHandler in .NET is a game-changer. It brings centralized control, consistent error responses, and enhanced logging to your application, ensuring a robust and user-friendly experience. Don't wait—enhance your .NET app today with this powerful technique!