//重载形状改变函数 protected override void OnSharpChanged(SharpChangedEventArgs e) { base.OnSharpChanged(e); }
static void Sharp_SharpChanged(object sender, SharpChangedEventArgs e) { if (sender is Circle) Console.WriteLine("形状变化后圆形面积为{0}", e.Area); else if (sender is Rectangle) Console.WriteLine("形状变化后矩形面积为{0}", e.Area); }
//形状改变虚函数 protected virtual void OnSharpChanged(SharpChangedEventArgs e) { if (SharpChanged != null) SharpChanged(this, e);//触发形状改变事件 }