C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;


namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string testSession = ExecuteCommandSync("sessionname");
            MessageBox.Show(testSession);
        }
        public string ExecuteCommandSync(object command)
        {
            try
            {
                // create the ProcessStartInfo using "cmd" as the program to be run,
                // and "/c " as the parameters.
                // Incidentally, /c tells cmd that we want it to execute the command that follows,
                // and then exit.
                System.Diagnostics.ProcessStartInfo procStartInfo =
                    new System.Diagnostics.ProcessStartInfo("cmd", "/c " + command);
                
                // The following commands are needed to redirect the standard output.
                // This means that it will be redirected to the Process.StandardOutput StreamReader.
                procStartInfo.RedirectStandardOutput = true;
                procStartInfo.UseShellExecute = false;
                // Do not create the black window.
                procStartInfo.CreateNoWindow = false;
                // Now we create a process, assign its ProcessStartInfo and start it
                System.Diagnostics.Process proc = new System.Diagnostics.Process();
                proc.StartInfo = procStartInfo;
                proc.Start();
                // Get the output into a string
                string result = proc.StandardOutput.ReadToEnd();
                //string result2 = System.Diagnostics.ProcessStartInfo( //procStartInfo("cmd", "/c " + command);
                return (result);
                // Display the command output.
                
            }
            catch (Exception objException)
            {
                // Log the exception
                return("failure");
            }
        }

    }
}

public class User
{
    private List<Group> groups = new List<Group>();
    public List<Group> Groups
    {
        get { return groups; }
    }
    //constructor selects groups from database, populates "groups" with new Group()
}

public class Group
{
    private List<User> users = new List<User>();
    public List<User> Users
    {
        get { return users; }
    }
    //constructor selects users from database, populates "users" with new User()
}

User u = new User();
u.Groups["All Users"].Users[u.Username].Groups["All Users"].Users[u.Username] /*...*/;