how to make Online users Counter and Total visited in asp.net

void Session_Start(object sender, EventArgs e)
  {
      // Code that runs when a new session is started
      ++Users.OnlineCounter;
      ++Users.TotalUsers;
  }
  void Session_End(object sender, EventArgs e)
  {
      --Users.OnlineCounter;
  }

public class Users
{
	public Users()
	{
		//
		// TODO: Add constructor logic here
		//
	}
    private static int onlineCounter;
    private static int totalUsers;

    public static int TotalUsers
    {
        get { return Users.totalUsers; }
        set { Users.totalUsers = value; }
    }

    public static int OnlineCounter
    {
        get { return Users.onlineCounter; }
        set { Users.onlineCounter = value; }
    }
}