Egil Hansen's .com

Data models evolve, but the JSON payloads serialized from the old shapes do not go away.

Treating warnings as errors is good practice for both humans and AI agents — it keeps the codebase honest.

I use Verify for snapshot testing in .NET projects.

In a recent Blazor Server (.NET 8) project I needed to send a large amount of data to Plotly.js (+ 50 MB of data).

I noticed this oddity when I was reading a CSV file using SSIS.

If you use the Lookup Transform to perform lookups with columns that can be NULL, the Lookup Transform will fail to find expected matches because in a database world, NULL does not equal NULL.

When using SQL Server Integration Service (SSIS) Excel data source to import text from a column in a spreadsheet, the data source will automatically try to determine the maximum length of text in the text column.

This morning our freshly installed SharePoint Server 2013 server was refusing to let me save a simple form with a Lookup column to another list.

There is an excellent guide over on MSDN on how to debug a SharePoint timer job from Visual Studio.

To install SharePoint Foundation 2010 on Windows 7/8, you need to modify the config.xml file.

It can sometimes be useful to specify multiple JavaScript files to use when rendering e.g. a field in SharePoint 2013.

This is a quick stepbystep guide to add an Enterprise Keywords column to a custom list and enable Keyword synchronization with Visual Studio 2012 in a SharePoint project.

With the Windows Phone 7.8 update to my Nokia Lumia 800, Nokia suddenly decided that my hearing is precious and I am not able to take care of it myself... the volume is now capped at half of what it was before.

Running Drupal on a shared host usually imply you only have access to the webserver through FTP, i.e. no Drush or SSH to ease the upgrade process.

Getting TypeScript, RequireJS, and Jasmine playing nicely together in Visual Studio turned out to be a bit harder than I had hoped.

Sometimes very simple formulas like =IF([Column1]<=[Column2], "OK", "Not OK") can result in the unhelpful

After enabling HyperV on my laptop running Windows 8, I noticed that Task Manager and Resource Monitor always showed the processor as running at full speed, as if Speedstepping was suddenly disabled.

Here is a quick tip for all of us who write and program a lot in one language, e.g.

Conventional wisdom says that when a PC starts to run slowly and angry screaming at the computer screen ensues, it is time to reinstall Windows or remove some of the crapware that's been building up on the PC.

When creating a list instance manually in a SharePont 2010, it is important to remember to add the right FeatureId attribute to the ListInstance element, if the TemplateType attribute points to a list template which is not in the same feature as the one y…

When registering a custom event receiver to a content type during a feature deployment using the SPEventReceiverDefinition class, you need the full assembly name and the full class name.

Using a photo as a background for a web page can look pretty good, but making that photo fill out the entire browser window no matter its size and proportions is not straight forward, if you also want to keep the photo in its original aspect ratio.

This simple CSS class will create a semi transparent background, letting whatever is underneath the element shine through.

A few days ago Googler Steve Yegge accidently posted an internal memo to the world about Google's struggles with building products.

I am currently taking CSE 218 at UCSD, "Advanced Topics in Software Engineering Methods and Tools for Software Modularity", where we recently read the paper "Applying 'Design by Contract'" by Bertrand Meyer.

It is not often I find myself struck by the passing of a public figure, but with Steve Jobs it is hard not to feel touched.

Update June, 2013: As pointed out by Don Morris in the comments, PHP Markdown Extra now supports classes, making the below trick obsolete for this purpose.

This is a quick and easy way to grab all DNS records from a domain.

In this tutorial I will show you how to package custom font(s) into a Windows Installer .msi package for easy deployment to computers in a network through Active Directory.

To make it easier for me to unit test a OData JavaScript library I am working, I created a small HTTP handler that will reply back to a AJAX request with the headers, HTTP verb and query string it received.

The problem is pretty simple.

I have always found it too difficult to add a "Choose xxxxx" item to the top of a DropDownList, when the DropDownList binds to a ObjectDataSource, SqlDataSource or similar.

Today I was looking at Ukadc.Diagnostics, an extension to the System.Diagnostics namespace, and decided to build a test website myself to get more familiar with it.

After reading Scott Mitchell's article Using Coordinated Universal Time (UTC) to Store Date/Time Values, I decided to do as he suggest and use UTC for a web application I'm building at work.

Update 2011: Since Internet Explorer now always just display a vertical scrollbar, all that is needed to force a scrollbar in all other nonIE browsers is this: I worked on a site a few weeks ago where the user wanted visible scrollbars no matter how much…

Back in October 2005 when Quake 4 was about to be released I decided to write a guide to dueling in Quake.