相关疑难解决方法(0)

我有一个包含以下事件的基类:

public event EventHandler Loading;
public event EventHandler Finished;

在继承自此基类的类中,我尝试引发事件:

this.Loading(this, new EventHandler()); // All we care about is which object is loading.

我收到以下错误:

事件'BaseClass.Loading'只能出现在+ =或 - =(BaseClass')的左侧

我假设我不能像其他继承的成员一样访问这些事件？

我有这个程序:

    class One
    {
        public delegate void del(object o);
        public event del SomethingChanged;

        int x;
        public int X
        {
            get { return x; }
            set { x = value; OnSomethingChanged(this); }
        }

        protected void OnSomethingChanged(object o)
        {
            if (SomethingChanged != null)
                SomethingChanged(o);
        }
    }

    class Two: One
    {
        public void ChangeSomething()
        {
            //if (SomethingChanged != null)
            //    SomethingChanged(this);
            OnSomethingChanged(this);
        }
    }

    static void Main(string[] args)
    {
        One one = new One();
        Console.WriteLine(one.X);
        one.SomethingChanged += new One.del(one_SomethingChanged);
        one.X = 5;
    } …