Lachlan B's Blog

Electron App vs native Winforms App

Like many other software developers I have a bunch of CI jobs that I need to monitor. If any of these jobs are failing I don't want to update my code and break everything. Recently I've been using an app named Catlight. It works great, it's simple, it looks nice:

But the CPU and memory usage?? For just a simple app (all it does is poll a JSON service every minute and displays some basic stats) check out the memory usage:

Yes, that's THREE processes running, and it's using, in total, 94 meg of memory!

Is this a problem? Perhaps not to you. Is it an affront to everything we believe in as software developers? Yes.

It's also worth noting that I'm running a Dell Latitude E6540, which is a great laptop, but it has a notorious fan problem. If you tax the CPU a little bit for longer than a few seconds, the incredibly annoying fan kicks in, whirrs for a second and then stops. Then repeats. It drives you mental.

As a little exercise I wanted to see what would happen if I wrote the equivalent program in a boring Winforms c# app. I came up ...

Intellisense in Visual Studio 2017 is broken

I got around to trying Visual Studio 2017.

Using intellisense when editing Razor .cshtml files seems to be broken. Sometimes it doesn't work at all.. or appears for a flash and then disappears. Here's a video showing you my joy:

Plus... sometimes I don't get any of the extension methods:

I get absolutely no information on function parameters:

And on the rare occasion that it does appear... it's completely in black and white with no highlighting!

Is this just on my machine? Does it work for everyone else?


Twenty Two Nerdy Things I Learnt This Week

You learn a lot when writing code.


Automated build with Gitlab and Jenkins

With open source tools Jenkins and Gitlab you can automate your builds, track bugs, do code reviews and work in feature branches for .NET development. Here's how to get it all working.

  1. Your first step is to download and install the (free) community edition of Gitlab. If you don't have a linux server available, you can always run one within Virtual Box on your windows server.

    After installation, you should be able to log in and see the home page: For this example we are going to assume that Gitlab is available at the following address:
  2. On your windows server, you need to install the following:

I suck, you suck, we all suck at coding

Programming is hard, but us programmers never like to admit it. Except for the wonderful Scott Hansleman who wrote this fantastic article. And on a similar note. And a good explanation on why we are all so grumpy.

Oh and did you know that programming sucks?

And here's a better explanation why.

Oh and the code for Toyota 2005 Camry is TERRIBLE.

I write this post to assure fellow devs that you are a REAL programmer. Don't stress about not knowing everything or not knowing enough. There's too much to learn. The time it takes to get good at a language or framework is the time it takes for it to become obsolete! Programming sucks but is great fun. Just don't let it get you down :)


Midi patch changer schematic

Here's the schematic for my MIDI patch changer.


Speaking at NDC Sydney

In a couple of months I'll be speaking at NDC Sydney - my topic is "How to change things at your company" - a lightning talk on how to enact change. This is a non technical talk, which is fantastic, because I don't fancy having to answer technical questions from such a tough audience!!

This will be my first "big" conference, and I have to thank Lars Klint for his fantastic support in choosing me to speak at the DDD conference last year, which really gave me the confidence to submit a few talks to NDC. I should also link to a great article by Troy Hunt titled Speaker Style Bingo which is a killer article that helped me a lot in preparing my talks. Thanks guys!


Arduino based midi patch changer

I thought it would be fun to build a MIDI patch changer, something like this one.

So I bought a simple arduino kit and started knocking it together. Fortunately I've done a bit of electronics beforehand so I found it quite easy. The prototype has been built:

The next step will be mounting it in a box. Good fun!


Using NuGet to manage shared code

Within your organisation you probably have shared code that is common across multiple projects? You know, code that does boring stuff like sending an email, error message logging or generating a nice bit of HTML.

So the question is, How do you manage that code? Do you:

  1. Copy around code files to multiple projects
  2. Factor out your common code to a new project and include that project in many solutions
  3. Compile down your common project into a DLL and copy that around
  4. Use revision control to import particular versions of common libraries

All of these solutions work, but when it comes to keeping your common code up to date, and knowing which versions are used by which applications, you're going to start running into problems.

Enter, NuGet!

But isn't NuGet what Visual Studio uses for managing external, public packages? Yes it is. But did you know you can host your own private NuGet repository, create your own...

ASP.NET Two Factor Auth with Google's Authenticator App part 2

This is part two in a series of posts. For the introduction post on how to do it all with a NuGet package, see two factor auth with google authenticator app. This article is about how to implement it manually and how it works behind the scenes. A lot of this code is based on an article by Jerrie Pelser titled Using google authenticator with identity.

If you already have an application that is utilising ASP.NET's identity service, you can made a few modifictions to include the Two Factor authentication code.

To show how this can be done, first off create a new ASP.NET application, choose "MVC", and set authentication to "Individual User Accounts". In this example we are creating a new application for managing our own movie DVD collection, so we will name it MovieManager.