private void recommendButton_Click(object sender, EventArgs e)//推荐
 {
     currentBook.Recommend = currentBook.Recommend + 1;
     BookShelfService.UpdateBook(currentBook);
     this.recommendButton.Enabled = false;
     this.recommendButton.Visible = false;
 }
        private void finishButton_Click(object sender, EventArgs e)//完成
        {
            switch (Flag)
            {
            case 1:
                formAccount.Show();
                formAccount.resetAppointAndLend();
                formAccount.Parent = null;
                this.Close();
                break;

            case 2:
                formLibrary.Show();
                formLibrary.resetBooks();
                formLibrary.Parent = null;
                this.Close();
                break;

            case 3:
                formManage.Show();
                formManage.resetLibrary();
                formManage.Parent = null;
                this.Close();
                break;

            case 4:
                currentBook.Name        = this.nameTextBox.Text;
                currentBook.Author      = this.authorTextBox.Text;
                currentBook.Sort        = this.sortTextBox.Text;
                currentBook.Description = this.introductionTextBox.Text;
                BookShelfService.UpdateBook(currentBook);
                if (path != null)
                {
                    if (File.Exists(resPath + @"\" + currentBook.Name + ".jpg"))
                    {
                        File.Delete(resPath + @"\" + currentBook.Name + ".jpg");
                    }
                    FileStream fr       = File.Open(path, FileMode.Open);
                    FileStream fw       = File.Open(resPath + @"\" + currentBook.Name + ".jpg", FileMode.Create);
                    Image      newImage = Image.FromStream(fr);
                    newImage.Save(fw, System.Drawing.Imaging.ImageFormat.Jpeg);
                    currentBook.imagePath = resPath + @"\" + currentBook.Name + ".jpg";
                    fr.Close();
                    fw.Close();
                }
                formManage.Show();
                formManage.resetLibrary();
                formManage.Parent = null;
                this.Close();
                break;

            default:
                break;
            }
        }