/// <summary>
/// 注销观察者的注册
/// </summary>
/// <param name="obsever"></param>
public void UnRegister(IObsever obsever)
{
this.ObSevers.Remove(obsever);
}
/// <summary>
/// 注册观察者
/// </summary>
/// <param name="obsever"></param>
public void Register(IObsever obsever)
{
this.ObSevers.Add(obsever);
}