using Paralle.ForEach to DataTable

Paralle.ForEach.DataTable.cs

[DllImport("kernel32.dll")]
static extern int GetCurrentProcessorNumber();
static void Main(string[] args)
{
    DataTable dt = new DataTable();
    dt.Columns.Add("n", typeof(int));
    var numbers = Enumerable.Range(0, 1000);

    Stopwatch sw = new Stopwatch();
    sw.Start();

    Parallel.ForEach(numbers, n => {
        StartParallelSum(n, dt);
    });

    sw.Stop();
    Console.WriteLine("0 to " + numbers.Max() + ", " + 
                      sw.ElapsedMilliseconds.ToString() + "ms");
}

private static void StartParallelSum(int n, DataTable dt)
{
    DataRow dr;
    lock (dt.Rows.SyncRoot) {
        dr = dt.NewRow();
        dr["n"] = Guid.NewGuid().ToString().Length;

        dt.Rows.Add(dr);
    }

    Console.WriteLine("on thread {0:d2} / on process {1}/{2} - {3}", 
                    Thread.CurrentThread.ManagedThreadId,
                    GetCurrentProcessorNumber(),
                    Environment.ProcessorCount, n);
}