C#

using System;
using System.IO;
using System.Text;
using Microsoft.Win32;
using System.Security;
using System.Threading;
using System.Reflection;
using System.Diagnostics;
using System.Configuration;
using System.Globalization;
using System.ComponentModel;
using System.DirectoryServices;
using System.Security.Principal;
using System.Collections.Generic;
using System.Security.Permissions;
using System.Text.RegularExpressions;
using System.Runtime.InteropServices;
using System.Runtime.Remoting.Contexts;
using System.Runtime.Remoting.Messaging;
using System.Windows.Forms;
using System.Collections;

namespace AD
{
    class ActiveDirectory
    {

        public static void removeUser(string domainValue, string adGroupAccount)
        {
            try
            {
                string path = string.Format("WinNT://{0},computer", Environment.MachineName);
                using (DirectoryEntry dirEntry = new DirectoryEntry(path))
                {
                    DirectoryEntry groupEntry = new DirectoryEntry("WinNT://" + System.Environment.MachineName + "/Administrators,group");

                    try
                    {
                        groupEntry.Invoke("Remove", "WinNT://" + domainValue + @"/" + adGroupAccount + ",user");
                        groupEntry.CommitChanges();
                        MessageBox.Show("Account Removed Successfully");
                        groupEntry.Dispose();
                    }
                    catch (Exception cex)
                    {
                        MessageBox.Show(cex.Message + "\n" + cex.StackTrace + "\n" + cex.Source);
                    }
                    
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);

            }

        }




        public static void addUser(string domainValue, string adGroupAccount)
        {
            try
            {
                string path = string.Format("WinNT://{0},computer", Environment.MachineName);
                using (DirectoryEntry dirEntry = new DirectoryEntry(path))
                {
                    DirectoryEntry groupEntry = new DirectoryEntry("WinNT://" + System.Environment.MachineName + "/Administrators,group");

                    try
                    {
                        groupEntry.Invoke("Add", "WinNT://" + domainValue + @"/" + adGroupAccount + ",user");
                        groupEntry.CommitChanges();
                        MessageBox.Show("Account Added Successfully");
                        groupEntry.Dispose();
                    }
                    catch (Exception cex)
                    {
                        MessageBox.Show(cex.Message + "\n" + cex.StackTrace + "\n" + cex.Source);
                    }

                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);

            }

        }




        public static string userExists(string userName, string groupName)
        {
 
            string returnValue = "false";

            try
            {
                DirectoryEntry localMachine = new DirectoryEntry("WinNT://" + Environment.MachineName);
                DirectoryEntry userGroup = localMachine.Children.Find(groupName, "group");

                object members = userGroup.Invoke("members", null);
                foreach (object groupMember in (IEnumerable)members)
                {
                    DirectoryEntry member = new DirectoryEntry(groupMember);
                    if (member.Name.Equals(userName, StringComparison.CurrentCultureIgnoreCase))
                    {
                        returnValue = "true";
                       break;
                    }
                }
            }
            catch (Exception ex)
            {
                returnValue = "false";
            }
            return (returnValue);
        }
    }
}

private void button2_Click(object sender, EventArgs e)
{
    string domain = textBox1.Text;
    string userName = textBox2.Text;
    try
    {
        AD.ActiveDirectory.addUser(domain, userName);

    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

private void button3_Click(object sender, EventArgs e)
{
    string domain = textBox1.Text;
    string userName = textBox2.Text;
    try
    {
        AD.ActiveDirectory.removeUser(domain, userName);
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

private void button4_Click(object sender, EventArgs e)
{
    string domain = textBox1.Text;
    string userName = textBox2.Text;
    string result = AD.ActiveDirectory.userExists(userName, "Administrators");
    MessageBox.Show("Exists equals " + result);
}

timer.Interval = new TimeSpan(0, 0, 0, 0, 1);

Luc Pattyn wrote:

Are you too lazy to look it up yourself?

vinu.1111 wrote:

which is the best way to inform the user about newly released application..?