csharp 引发一个事件，接收一个EventHandler，sender对象和EventArgs

Posted 2021-05-12

void Raise(this EventHandler eventHandler,
    object sender, EventArgs e)
{
    if (!eventHandler.IsNull())
    {
      eventHandler(sender, e);
    }
}

void Raise<T>(this EventHandler<T> eventHandler,
    object sender, T e) where T : EventArgs
{
    if (!eventHandler.IsNull())
    {
      eventHandler(sender, e);
    }
}