I had used Ankh SVN to do source control for a project but now I want to use a TFS server but I can't as Ankh is set as default every time I open the project. I also removed all .svn files so it's not linked to subversion anymore.
How do I overcome this behaviour.
You need to change the source control bindings to point to TFS instead of to SVN.
With the solution open, go to "File" -> "Source Control" -> "Advanced" -> "Change Source Control Provider".