public event EventHandler WorkComplete; //базовый тип делегата для ивентов
public virtual void DoWork(int hours, WorkType workType)
{
for (int i = 0; i < hours; i++)
{
var e = new WorkPerformedEventArgs
{
Hours = i + 1,
WorkType = workType
};
//OnWorkPerformed(this, i + 1, workType);
OnWorkPerformed(this, e);
}
OnWorkComplete(this, EventArgs.Empty);
}
public static void WorkPerformed3(object sender, WorkPerformedEventArgs e)
{
Console.WriteLine($"3: Type of work {e.WorkType} done in {e.Hours} hours");
}
protected virtual void OnWorkPerformed(object sender, WorkPerformedEventArgs e)
{
WorkPerformed?.Invoke(this, e); //? означает if (WorkPerformed != null)
}
