3.4. Extending MSBuild by writing and using custom tasks

Extending MSBuild is easy. To write your own tasks, you need to implement the Micro-soft.Build.Framework.ITask interface or inherit from Microsoft.Build.Utilities.Task. The second solution is easier: all you have to do is override the Execute method. Let’s use it to do something useful.

Let’s assume you want to associate the assembly version number with the Subversion (SVN) revision number. For some compelling reason, you decide that the revision part of the assembly version should be the current SVN revision number. For example, you want your CI process to update the version number every time it builds.