/// <summary>
/// Private constructor to insure that Controller is not created outside this class.
/// </summary>
private Controller()
{
session = Session.GetInstance();
session.UserID = -1;
}
/// <summary>
/// Accessor method for accessing the single instance of controller.
/// </summary>
/// <returns>The only instance of controller</returns>
public static Session GetInstance()
{
if (_instance == null)
{
_instance = new Session();
}
return _instance;
}