private void 添加图书_4_Click(object sender, EventArgs e)
{
if (SetTextToBook())
{
bookBLL.Insert(new_book);
MessageBox.Show("状态：添加成功！");
}
BookCatalogUpdate(treeView2);
Clear_4();
}
private void btnBookAdd_Click(object sender, EventArgs e)
{
SetTextToBook();
bookBLL.Insert(book);
labAddInformation.Text = "添加状态：已添加！";
}
