private void btnBookDelete_Click(object sender, EventArgs e) { SetTextToBook(); if (book.bkStatus == "借出") { labAddInformation.Text = "添加状态:该书以借出,暂时无法删除!"; } else { bookBLL.Delete(book); labAddInformation.Text = "添加状态:已删除!"; } }
private void 除图书_4_Click(object sender, EventArgs e) { if (SetTextToBook()) { dt = BookAdmin.GetBook(); for (int i = 0; i < dt.Rows.Count; i++) { if (dt.Rows[i][7].ToString() == "借出" && dt.Rows[i][1].ToString() == tb4_3.Text) { MessageBox.Show("该书未被归还"); return; } } bookBLL.Delete(new_book); MessageBox.Show("状态:删除成功!"); } BookCatalogUpdate(treeView2); Clear_4(); }
private void 除图书_4_Click(object sender, EventArgs e) { if (SetTextToBook()) { dt = BorrowAdmin.GetBorrow(); for (int i = 0; i < dt.Rows.Count; i++) { if (dt.Rows[i][7].ToString() == "False" && dt.Rows[i][4].ToString() == new_book.Name) { MessageBox.Show("该书未被归还"); return; } } new_borrow.BID = new_book.ID; new_borrow.BName = ""; new_borrow.UName = ""; borrowBLL.DeleteBook(new_borrow); bookBLL.Delete(new_book); MessageBox.Show("状态:删除成功!"); } BookCatalogUpdate(treeView2); Clear_4(); }