/// <summary>
/// .Net Bug，此事件不会被引发。
/// </summary>
/// <param name="e"></param>
protected virtual void OnWindowClosing(WebBrowserWindowClosingEventArgs e)
{
if (WindowClosing != null)
{
WindowClosing(this, e);
}
}
public void WindowClosing(bool IsChildWindow, ref bool Cancel)
{
WebBrowserWindowClosingEventArgs e = new WebBrowserWindowClosingEventArgs(IsChildWindow, Cancel);
this.parent.OnWindowClosing(e);
Cancel = e.Cancel;
}