C# Using 7zip to get list of files in an archive

Process t = new Process();
t.StartInfo.FileName = "7za.exe";
t.StartInfo.Arguments = "e " + filePath[i] + " -y -o" + directory[3];
t.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
t.EnableRaisingEvents = true;
t.StartInfo.UseShellExecute = false;
l.StartInfo.RedirectStandardOutput = true;
t.Start();
Console.WriteLine(l.StandardOutput.ReadToEnd());
t.WaitForExit();