Get all iteration paths in TFS programtically

public ICollection GetIterationPaths(string projectName, Uri teamCollectionUrl)
{
    var tfs = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(teamCollectionUrl);
    var store = (WorkItemStore) tfs.GetService(typeof (WorkItemStore));
    var result = new List();
 
    foreach (var project in store.Projects.Cast().
        Where(project => string.Compare(project.Name, projectName, StringComparison.OrdinalIgnoreCase) == 0))
    {
        foreach (Node node in project.IterationRootNodes)
        {
            var path = project.Name + "\\" + node.Name;
            result.Add(path);
            RecursiveAddIterationPath(node, result, path);
        }
 
        break;
    }
 
    return result;
}
 
private static void RecursiveAddIterationPath(Node node, ICollection result, string parentIterationName)
{
    foreach (Node item in node.ChildNodes)
    {
        var path = parentIterationName + "\\" + item.Name;
        result.Add(path);
        if (item.HasChildNodes)
        {
            RecursiveAddIterationPath(item, result, path);
        }
    }
}