Custom Global Exception Handler MIddleware

3.Post.GlobalExceptionHandler.GlobalExceptionHandlerMiddleware.cs

public class GlobalExceptionHandlerMiddleware : IMiddleware
    {
        private readonly ILogger<GlobalExceptionHandlerMiddleware> _logger;

        public GlobalExceptionHandlerMiddleware(ILogger<GlobalExceptionHandlerMiddleware> logger)
        {
            _logger = logger;
        }

        public async Task InvokeAsync(HttpContext context, RequestDelegate next)
        {
            try
            {
                await next(context);
            }
            catch (Exception ex)
            {
                _logger.LogError($"Unexpected error: {ex}");
                await HandleExceptionAsync(context, ex);
            }
        }

        private static Task HandleExceptionAsync(HttpContext context, Exception exception)
        {
            context.Response.ContentType = "application/json";
            context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;

            var json = new
            {
                context.Response.StatusCode,
                Message = "An error occurred whilst processing your request",
                Detailed = exception
            };
            
            return context.Response.WriteAsync(JsonConvert.SerializeObject(json));
        }
    }

4.Post.GlobalExceptionHandler.GlobalExceptionHandlerMiddlewareExtensions.cs

public static class GlobalExceptionHandlerMiddlewareExtensions
{
	public static IServiceCollection AddGlobalExceptionHandlerMiddleware(this IServiceCollection services)
	{
		return services.AddTransient<GlobalExceptionHandlerMiddleware>();
	}

	public static void UseGlobalExceptionHandlerMiddleware(this IApplicationBuilder app)
	{
		app.UseMiddleware<GlobalExceptionHandlerMiddleware>();
	}
}

5.Post.GlobalExceptionHandler.Startup.cs

public class Startup
{
	public void ConfigureServices(IServiceCollection services)
	{
		// ... código omitido
		
		services.AddGlobalExceptionHandlerMiddleware();	
	}

	public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
	{
		// ... código omitido
		
		app.UseGlobalExceptionHandlerMiddleware();
	}
}