Question

我有两个类，我需要它们彼此构成实例。为了防止堆栈溢出异常发生，我将构造函数与参数一起使用。但是我怎么称呼他们呢？我只能调用基本构造函数。

public class TimerData : INotifyPropertyChanged
{
    public TimerData()
    {
        //parameters = new Parameters();
    }

    public TimerData(Parameters pr = null)
    {
        parameters = pr ?? new Parameters(this);
    }

    // Here I create an instance of the TimerData class to call the constructor 
    // with parameters through it. It gives an error that the field initializer 
    // cannot access a non-static field
    TimerData timerData = new TimerData();
    private Parameters parameters = new Parameters(timerData);
}


public class Parameters : INotifyPropertyChanged
{
    public Parameters()
    {
        //timerData = new TimerData();
        //timerData.EventSecondsNotify += DecreaseFatigue;
        //timerData.EventSecondsNotify += DecreaseSatiety;
    }

    // How to call this constructor?
    public Parameters(TimerData td = null)
    {
        timerData = td ?? new TimerData(this);
        timerData.EventSecondsNotify += DecreaseFatigue;
        timerData.EventSecondsNotify += DecreaseSatiety;
    }

    private TimerData timerData;
}

Answer 1

我不明白为什么要在构造函数之外初始化实例。这应该可以正常工作：

public class TimerData
{
  private Parameters parameters;
  public TimerData(Parameters pr = null)
  {
    parameters = pr ?? new Parameters(this);
  }
}
public class Parameters
{
  private TimerData timerData;
  public Parameters(TimerData td = null)
  {
    timerData = td ?? new TimerData(this);
  }
}

如何用参数调用构造函数？

1 个答案: