public void Add(Article article)
{
if (!list.Keys.Contains(article.Title))
{
list.Add(article.Title, article);
}
}
private void saveButton_Click(object sender, RoutedEventArgs e)
{
Article art = new Article();
art.Title = titleTextBox.Text.Trim();
art.Author = authorTextBox.Text.Trim();
art.Time = timeTextBox.Text.Trim();
art.Tag = tagTextBox.Text.Trim();
art.Content = articleTextBox.Text.Trim();
list.Add(art);
listTextBlock.Text = list.GetListTitle();
}