Thomas Ardal

Error logging is an essential part of any application, as it allows developers to track and fix issues that may arise during the use of the application. In a Windows Forms application written in C#, several options exist for implementing effective error logging. In this blog post, we will discuss ...

TOC This is the fourth post in a series about ASP.NET security. Check out Improving security in ASP.NET MVC using custom headers, Content-Security-Policy in ASP.NET MVC, and Storing Content-Security-Policy reports in elmah.io for more security-related posts. You've already heard about cross-site scripting (XSS), right? ...

We recently started experimenting with machine learning on elmah.io. There's a closed beta on anomaly detection and more, similar features will follow in the future. We chose ML.NET as the framework and are pretty happy with the results so far. The amount of documentation is good ...

TOC Time for another post in the series Debugging common .NET exceptions. Today's exception is, without a doubt, the error most people have experienced: System.NullReferenceException. The exception happens when you try to invoke a reference that you were expecting to point to an object but in fact, ...

TOC Today's tip isn't exactly about a hot new version of ASP.NET Core or anything like that. I often find myself googling "simple" questions like how to write text to a file in the quickest and effective way. Most results are either blog ...

I'm getting near my 20th anniversary in the tech industry. During the years, I have seen almost every anti-pattern when dealing with exceptions (and made the mistakes personally as well). This post contains a collection of my best practices when dealing with exceptions in C#. Don't ...

I had a problem the other day that I believe qualifies as a blog post. An elmah.io user reported that refreshing the organization overview would generate a 404. After debugging the problem, I found out that the URL generated by that page can be too long. This post is ...

The aim of this post is to teach you how to implement Identity Authentication & Authorization with ASP.NET Core. We will begin with a cookie-cutter Microsoft starter project, and then modify it to use Kendo in a future post. First Things First First, I'll walk you through ...

Since writing this post the BrowserStack integration has been removed. When dealing with client-side errors, the combination of a physical device, the operating system, and the browser can be the cause of an error. You probably don't have an old Samsung Galaxy S4 running Android 4 laying in ...