How to add, edit and delete active directory users of the local space in C#

Local active directory (add, edit, delete)

//Create a new user on the local active directory
public bool add_user(string user_name, string user_password) {
  try {
    DirectoryEntry AD = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer");
  
    DirectoryEntry NewUser = AD.Children.Add(user_name, "user");
    NewUser.Invoke("SetPassword", new object[] { password_password });
    NewUser.Invoke("Put", new object[] { "Description", user_name });
    NewUser.CommitChanges();

    RecycleAppPool();
  }
  catch {
    return false;
  }
  return true;
}

//Edit user of the local active directory
public bool edit_user(string oldname, string oldpassword, string newname, string newpassword) {
  DirectoryEntry AD = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer");
  try {
    DirectoryEntry User = AD.Children.Find(oldname);
    
    User.Rename(newname);
    User.Invoke("ChangePassword", new object[] { oldpassword, newpassword });
    User.CommitChanges();

    RecycleAppPool();

    return true;
  }
  catch {
    return false;
  }
}

//Delete user from the local active directory
public bool delete_user(string name, string passw) {
  try {
    DirectoryEntry AD = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer");
    DirectoryEntries MyEntries = AD.Children;
    DirectoryEntry User = MyEntries.Find(name, "user");
    MyEntries.Remove(User);

    RecycleAppPool();
  }
  catch {
    return false;
    }
  return true;
}