Tag: Exception Handling

.Net 6 : ArgumentNullException.ThrowIfNull

.Net 6 has some nice little hidden features which helps in creating cleaner code, and in this post we will look into one such feature. Previously, if we needed to check if an object is null and raise an exception, we would have done as the following. void Foo(Bar bar) { if (bar is null) … Continue reading .Net 6 : ArgumentNullException.ThrowIfNull

Axios Interceptors and Exception Handling

Handling exceptions globally and gracefully is essential part of any application. This reduces the scattered try-catch cases and enable to handle everything from one point. In this article, we will explore how to implement global exception handling when making Api calls in an SPA design. We will use VueJs for demonstration along with Axios packages to assist the Http calls. Axios … Continue reading Axios Interceptors and Exception Handling

Revisiting Exception Handling in async methods

It is interesting to observe how the Exceptions behave in async code. While the .Net framework attempts to ensure the exprerience of handling failures in async methods are as similar to the synchronous methods, there are subtle differences which is worth understanding. Let us examine the following code. async Task<string> Foo() { var client = … Continue reading Revisiting Exception Handling in async methods

Early Exceptions for Iterator and async Methods

One of the first things you would need to be vary of while working with Iterator methods and async methods is exception handling. Both Iterator methods and async methods delay the execution of your code, right until you need the result, but it also results in delayed exceptions. Late Exception With Iterator Methods Let's consider … Continue reading Early Exceptions for Iterator and async Methods

Exception Handling in Web API (Part 2): Exception Filter (Extended)

The Exception Filter implementation mentioned in the Part1 of the article is fairly simple and straightforward.  But as you start supporting more and more Exceptions, the Cyclomatic Complexity of the "OnException" method would increase because of the "if" condition nature. A cleaner implementation of the Filter is shown below using Dictionary. Isn't that cleaner ?  

Exception Handling in Web API (Part 1): Exception Filter

The Web World, especially Web Services is fast moving towards the more abstract simpler Web API. This article is not focused on comparing Web Service and Web API, but rather it focuses on Exception Handling in Web API. By default,  the most common exception that an API Controller raises are translated into an HTTP Status … Continue reading Exception Handling in Web API (Part 1): Exception Filter