Prefix your argument line with "/C " what indicates: Run Command and then terminate.
And of course comment out my test line with: "c:/ dir" and uncomment yours.
Process netStat = new Process();
netStat.StartInfo.UseShellExecute = false;
netStat.StartInfo.CreateNoWindow = true;
netStat.StartInfo.FileName = @"cmd.exe";
netStat.StartInfo.Arguments = @"/C dir";
netStat.StartInfo.RedirectStandardOutput = true;
netStat.Start();
string output = netStat.StandardOutput.ReadToEnd();