Norske fødselsnummer i C# / Norwegian national ID numbers in C#

Available as NuGet package: https://www.nuget.org/packages/Tedd.Fodselsnummer Code to verify Norwegian national id number (fødselsnummer / personnummer) written in C#. Obeys 2013 standards as described in this Wikipedia article. Please let me know how if you find bugs / improvements. :)

(PS: This code is easy to test in LINQPad. Select C# Program, paste it in and hit run.)

Investigating Unity hang on second run (multi-threading)

Background he problem of Unity hangs on second run may have multiple causes and can sometimes be difficult to debug. When searching for an answer I see many with the same problem. I am therefore sharing a my debugging process in hope that it can help others solve their own problem. The problem Unity has had a problem… Read More »

C# Regex for verifying e-mails

Regex for matching e-mail in C#. Came across http://emailregex.com/ which has a horrible example, so ended up making my own loosely based on that. It leaves much to be desired, but will cover most use cases well enough.

   

ASP.Net 5 Identity Framework 3.0 manually adding users

Identity Framework 3 is in release candidate along with ASP.Net 5. The problem I set up a web project in ASP.Net 5 and created a controller for user import. It’s just some simple code that attempts to add multiple users. Adding a single user works great, but if I attempt to perform multiple operations in one go I… Read More »

ASP.Net 5 Areas

Visual Studio 2015 with ASP.Net 5 doesn’t support Areas in the GUI editor. Hopefully that will come, but until then here is a simple workaround. Create folder structure In the root of your project (not wwwroot) create the folder structure for Areas manually. In this example I created an area named “Foobar”. Edit Startup.cs to add routes for… Read More »

Better text console for C#

I recently discovered how slow Console.MoveBufferArea actually is. I used it for writing NLog output to a console and discovered that at times of high output it became dead slow. I could at times see it flicker and update line for line while the whole machine temporarily came to a crawl. As I searched the web I found… Read More »

Optimizing RDP for casual use

Optimizing RDP client/server for casual use. Make it use less bandwidth. Get higher throughput and adaptive transfers. Revisit Back in 2011 I wrote a blog post on optimizing RDP in Windows 7. I’ve been thinking of updating that post for some time, and now finally got around to it. Background Since sometime around 2000 I have been working… Read More »

HTML5: Drop-in prerender and prefetch script

Reading about prefetch and prerender, and especially Chromes prerender, got me thinking that this could to some extent be automated. My blog has become increasingly slow and I though that this would work as a simple quick-fix. This script relies on jQuery. Prefetch At startup (document ready) it will find any a-links tagged as “prefetch” and add their… Read More »

Legacy app: Net-Chat 2.0a (Quick Basic 4.5, DOS)

Recently got some old tapes recovered. There I found an old chat program I wrote in QB45 in 1996 (I was 16 years old). I installed Windows XP under Hyper-V to test it out since Windows 8 doesn’t run 16-bit DOS programs. But I wanted to have the executable work on my computer so I searched and found… Read More »