UserManager: a class to manipulate local Windows users and groups

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections.Specialized;

namespace MBeatini
{
    public partial class FormOptions : Form
    {
        private HybridDictionary list = new HybridDictionary();

        public FormOptions(int op)
        {
            InitializeComponent();
            if (op == 1)
            {
                this.Text = "Add options";
                button2.Visible = false;
            }
            else
            {
                this.Text = "Remove options";
                button1.Visible = false;
            }


            list.Add("UF_TEMP_DUPLICATE_ACCOUNT", 0x0100);
            list.Add("UF_NORMAL_ACCOUNT", 0x0200);
            list.Add("UF_INTERDOMAIN_TRUST_ACCOUNT", 0x0800);
            list.Add("UF_WORKSTATION_TRUST_ACCOUNT", 0x1000);
            list.Add("UF_SERVER_TRUST_ACCOUNT", 0x2000);
            list.Add("UF_DONT_EXPIRE_PASSWD", 0x10000);
            list.Add("UF_SCRIPT", 0x0001);
            list.Add("UF_ACCOUNTDISABLE", 0x0002);
            list.Add("UF_HOMEDIR_REQUIRED", 0x0008);
            list.Add("UF_LOCKOUT", 0x0010);
            list.Add("UF_PASSWD_NOTREQD", 0x0020);
            list.Add("UF_PASSWD_CANT_CHANGE", 0x0040);
            list.Add("UF_ACCOUNT_LOCKOUT", 0x0010);
            list.Add("UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED", 0x0080);


            comboBox1.Items.Add("UF_TEMP_DUPLICATE_ACCOUNT");
            comboBox1.Items.Add("UF_NORMAL_ACCOUNT");
            comboBox1.Items.Add("UF_INTERDOMAIN_TRUST_ACCOUNT");
            comboBox1.Items.Add("UF_WORKSTATION_TRUST_ACCOUNT");
            comboBox1.Items.Add("UF_SERVER_TRUST_ACCOUNT");
            comboBox1.Items.Add("UF_DONT_EXPIRE_PASSWD");
            comboBox1.Items.Add("UF_SCRIPT");
            comboBox1.Items.Add("UF_ACCOUNTDISABLE");
            comboBox1.Items.Add("UF_HOMEDIR_REQUIRED");
            comboBox1.Items.Add("UF_LOCKOUT");
            comboBox1.Items.Add("UF_PASSWD_NOTREQD");
            comboBox1.Items.Add("UF_PASSWD_CANT_CHANGE");
            comboBox1.Items.Add("UF_ACCOUNT_LOCKOUT");
            comboBox1.Items.Add("UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED");

        }

        private void button3_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            // remove
            if (textBox1.Text.Trim().Length == 0)
            {
                MessageBox.Show("Username: mandatory field", "Warning", MessageBoxButtons.OK);
                textBox1.Focus();
            }
            else if (comboBox1.SelectedIndex == -1)
            {
                MessageBox.Show("Option flag: mandatory field", "Warning", MessageBoxButtons.OK);
                comboBox1.Focus();
            }
            else
            {
                UserManager um = new UserManager();
                if (!um.RemoveOptionFlagToUser(textBox1.Text, Convert.ToInt32(list[comboBox1.SelectedItem.ToString()].ToString())))
                    MessageBox.Show(um.ErrorMessage, "Warning", MessageBoxButtons.OK);
                else
                    MessageBox.Show("Option " + comboBox1.SelectedItem.ToString() + " removed.", "Warning", MessageBoxButtons.OK);

                um = null;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // add
            if (textBox1.Text.Trim().Length == 0)
            {
                MessageBox.Show("Username: mandatory field", "Warning", MessageBoxButtons.OK);
                textBox1.Focus();
            }
            else if (comboBox1.SelectedIndex == -1)
            {
                MessageBox.Show("Option flag: mandatory field", "Warning", MessageBoxButtons.OK);
                comboBox1.Focus();
            }
            else
            {
                UserManager um = new UserManager();
                if (!um.AddOptionFlagToUser(textBox1.Text, Convert.ToInt32(list[comboBox1.SelectedItem.ToString()].ToString())))
                    MessageBox.Show(um.ErrorMessage, "Warning", MessageBoxButtons.OK);
                else
                    MessageBox.Show("Option " + comboBox1.SelectedItem.ToString() + " added.", "Warning", MessageBoxButtons.OK);
                um = null;
            }
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
           
        }
    }
}