Released GitHubLink 1.1.0

GitHubLink 1.1.0 is released today. This is a maintenance release with new features that didn’t make it in the initial release.

Quick introduction to GitHubLink

If you haven’t heard about GitHubLink yet, it is a very powerful tool which should be used by all open source .NET projects hosted on GitHub. It customizes the created pdb files of a build and will map all local source files to the code hosted on GitHub. This means that your users can step through your code, and you don’t have to do anything other than to run the GitHubLink tool after your build before publishing to NuGet.

Stepping through external source code

What’s new

New deployment methods

While the first version of GitHubLink was only available as executable on GitHub, this new release introduces two new ways to get GitHubLink:

Support for VB.NET projects

The previous version of GitHubLink only supported C# projects. The new version introduces support for VB.NET projects.

Introducing GitHubLink: let everyone step through your GitHub code!

Last week I have been working on a new project called GitHubLink. It let’s users step through your code hosted on GitHub! This makes symbol servers obsolete which saves you both time with uploading source files with symbols and the user no longer has to specify custom symbol servers (such as


The idea is based on the SourceLink project. However it requires FAKE and not everyone likes to write code in F#. GitHubLink is available as console application and can be references as assembly as well to be used in other .NET assemblies.

The advantage of GitHubLink is that it is fully customized for GitHub. It also works with GitHub urls so it does not require a local git repository to work. This makes it perfectly usable in continuous integration servers such as Continua CI.

Updating all the pdb files is very fast. A solution with over 85 projects will be handled in less than 30 seconds.

When using GitHubLink, the user no longer has to specify symbol servers. He/she only has to enable the support for source servers in Visual Studio as shown in the image below:


How to use it?

Using GitHubLink is very simple:

  1. Build the software (in release mode with pdb files enabled)
  2. Run the console application with the right command line parameters

Below are a few examples:

Running for the default branch

This will use the default branch (which is in most cases master). You can find out the default branch by checking what branch is loaded by default on the GitHub page.

Running for a specific branch

This will use the develop branch.

Running for a specific branch and configuration

This will use the develop branch and the debug configuration.

How to get it?

You can grab the first official release at GitHub:

Automatically determine a version using GitFlow or GitHubFlow

I am a big fan of automating builds. Even for simple and small projects, the builds should be fully automated. This makes sure that the software is built on a different machine than it is developed on. A great side effect is that the unit tests are really ran (because how many developers actually run the unit tests before checking in the code?). I am also a big fan of GitFlow. I won’t go into details, but I like that fact that you can always release a hotfix on the master branch while keeping a separate development branch.

After reading this blog post, you can automatically determine the version of software that follow GitFlow or GitHubFlow:


Stop versioning the software yourself

One issue though is that you have to manage the versioning in the Continuous Integration (CI) software. Managing the versions of all software projects I contribute to is almost a daytime job. Then I came along an awesome project called GitVersion. It can automatically determine the version of your software based on your repository. This means you no longer have to manage any states of the software, but you can simply ask GitVersion to determine the version for you following the GitFlow / GitHubFlow:

Copyright notice: image originally comes from the GitVersion website

To determine the version of a repository, use the following command line:

This will result in this version for the 8th commit in the develop branch:

Integration in your favorite CI software

The CI software I prefer to use is Continua CI. The reason I like it is that it is very easy to understand but in the same time it is really, really powerful. Another great advantage is their support: they implement features / fix bugs within a week which is nice compared to other companies where you have to wait until the next major release to hopefully find your feature request implemented.

To integrate GitVersion into Continua CI, use the steps below.

1) Add GitVersion.exe to your repository

Add GitVersion.exe to your repository (or put it on the build server, whatever you prefer). I like to put it in the tools directory of my repository:


2) Define version variables in the Continua CI configuration

Note that you can use all versions that GitVersion exposes in the example above. The naming convention must be GitVersion_[VariableName]. Below is an example of versions that I find useful during builds:


3) Call GitVersion.exe at the start of the build

In Continua CI, add the Execute Program action to a stage and use the settings below:


Don’t forget the set the arguments as well:

4) Update the AssemblyInfo

I prefer to put the version of a solution in a centralized SolutionAssemblyInfo which is shared over all the projects that are part of a solution. After calling GitVersion.exe, you can update the version in the AssemblyInfo of your project: