private void ModernWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
if (this.Content is ModernContent)
{
ModernContent currentContent = this.Content as ModernContent;
if (currentContent.CanBeClosed())
{
e.Cancel = false;
}
else
{
//The current content prevents close.
e.Cancel = true;
}
}
}
