How to get latest changeset number from TFS within NAnt

I had hard time getting this up and running so thought of sharing here. Might be useful to someone.

This guy has excellent post on this topic, here

Its very simple and self explanatory, so I don't think I have to give any thing more. Just ignore other target and focus only on Version target

The real gut behind this comes from the C# code, embedded within NAnt task

Here is the unchanged copy of code snippet, in case you don't want to navigate way.

public static void ScriptMain(Project project)
{
project.Log(Level.Info, "Connect to " + project.Properties["tfs.server"]);
TeamFoundationServer tfs = new TeamFoundationServer(project.Properties["tfs.server"]);

// Get a reference to Version Control.
Type type = typeof(VersionControlServer);
VersionControlServer versionControl = (VersionControlServer)tfs.GetService(type);

project.Log(Level.Info, "get changesetId for " + project.Properties["tfs.fullpath"]);
IEnumerable changeSets = versionControl.QueryHistory(project.Properties["tfs.fullpath"], VersionSpec.Latest, 0, RecursionType.Full, null, null, null, 1, true, false);
int latestChangesetId = 0;

// there is only one
foreach(Changeset c in changeSets)
{
latestChangesetId = c.ChangesetId;
}

project.Log(Level.Info, "ChangesetId is " + latestChangesetId.ToString());
project.Properties["project.version.revision"] = latestChangesetId.ToString();
}