There are a number of files in the repository that use .net 3.5 specific features like AutoProperties and Object Initializers. Looking at the checkins from the old Google SVN it looks like most (maybe all) were added by canofunk on 4/21/09 in r521:
CHANGED: Global - AutoProperties now used where possible.
CHANGED: Global - Object initializers now used where possible.
These changes make it so the projects can't be compiled in a VS2005 solution.
There are a number of files in the repository that use .net 3.5 specific features like AutoProperties and Object Initializers. Looking at the checkins from the old Google SVN it looks like most (maybe all) were added by canofunk on 4/21/09 in r521: CHANGED: Global - AutoProperties now used where possible. CHANGED: Global - Object initializers now used where possible.
These changes make it so the projects can't be compiled in a VS2005 solution.