public ObservableCollection <string> Addbook()
{
foreach (var x in Elements)
{
if (x.Author == _nameOfAuthor)
{
AboutAuthors.Add(x.Book);
}
}
return(AboutAuthors);
}
private void About_Click(object sender, EventArgs e)
{
AboutAuthors about = new AboutAuthors();
about.ShowDialog();
}
