TFS get annotation

TeamFoundationAnnotationRetriever.cs

public class TeamFoundationAnnotationRetriever
{
  private readonly Regex m_Regex = new Regex(@"^(?<changeset>\d+)(?<codeLine>.*)", RegexOptions.Compiled | RegexOptions.Multiline);

  public List<Changeset> GetAnnotations(string filepath, string codeText)
  {
    var versionControlServer = CreateVersionControlServer();

    return m_Regex.Matches(ExecutePowerTools(filepath))
      .Cast<Match>()
      .Where(m => m.Groups["codeLine"].Value.Contains(codeText))
      .Select(v => versionControlServer.GetChangeset(int.Parse(v.Groups["changeset"].Value), false, false))
      .ToList();
  }
  
  private static VersionControlServer CreateVersionControlServer()
  {
    var projectCollection = new TfsTeamProjectCollection(new Uri(@"TFS URL"));
    var versionControlServer = projectCollection.GetService<VersionControlServer>();
    return versionControlServer;
  }

  private static string ExecutePowerTools(string filepath)
  {
    using (var process = Process.Start(TfptLocation, string.Format("annotate /noprompt {0}", filepath)))
    {
    process.WaitForExit();
    return process.StandardOutput.ReadToEnd();
  }
}