/// <summary>
/// 删除书籍
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Delete_Click(object sender, RoutedEventArgs e)
{
//获取书籍ID
int Id = Convert.ToInt32(((MenuItem)sender).Tag);
Book book = DataFetch.GetBook(Id);
if (MessageBox.Show("确定要删除《" + book.Name + "》？ 本操作不可以逆转，请谨慎操作~", "提示", MessageBoxButton.YesNo, MessageBoxImage.Exclamation) == MessageBoxResult.Yes)
{
DataFetch.DeleteBook(Id);
this.DataContext = DataFetch.GetBooks();
}
}
