long i = DateTime.Now.Ticks;

//DotNetZip 1.7
using (ZipFile zip = new ZipFile(@"E:\001a.zip", Encoding.Default))
{
    zip.AddDirectory(@"E:\001");
    zip.Save();
}

//SharpZipLib 0.85
(new FastZip()).CreateZip(@"E:\001b.zip", @"E:\001", true, "");

//WinZip 10.0
Process process = new Process();
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
process.StartInfo.RedirectStandardOutput = false;//如果不需获取返回值，设置此属性为false，否则程序会卡死
process.StartInfo.FileName = "winzip.exe";
process.StartInfo.WorkingDirectory = Environment.CurrentDirectory;
process.StartInfo.Arguments = @"-p -r E:\001c.zip E:\001";
process.Start();
process.WaitForExit();
process.Close();

long j = DateTime.Now.Ticks;

MessageBox.Show(((j - i)/10000000).ToString());