1 void LendAddEq::OnSureAddLend() 2 { 3 // TODO: 在此添加控件通知处理程序代码 4 CString id, e_name,p_name,l_date,r_date; 5 6 lend_flag = "lending"; 7 8 BOOL In = FALSE; 9 10 CString sum_count; 11 CString c_name; 12 int count=0; 13 14 CString q; 15 16 17 18 GetDlgItemText(IDC_EDIT1, id); 19 GetDlgItemText(IDC_EDIT2, e_name); 20 GetDlgItemText(IDC_EDIT4, p_name); 21 GetDlgItemText(IDC_EDIT5, l_date); 22 GetDlgItemText(IDC_EDIT6, r_date); 23 24 rs.Open(CRecordset::forwardOnly, _T("SELECT * FROM equipment_table order by id Desc")); 25 while (!rs.IsEOF()) 26 { 27 28 rs.GetFieldValue(L"equipment_name", c_name); 29 //AfxMessageBox(c_name); 30 if (c_name == e_name) 31 { 32 //if ()借走数量 33 rs.GetFieldValue(L"sum_count", sum_count); 34 AfxMessageBox(sum_count); 35 count = _ttoi(sum_count); 36 //AfxMessageBox(count); 37 if (count - 1 > 0) 38 { 39 In = TRUE; 40 count =count - 1; 41 q.Format(L"%d", count); 42 AfxMessageBox(q); 43 break; 44 } 45 46 } 47 rs.MoveNext(); 48 } 49 rs.Close(); 50 if (In) 51 { 52 CString sql1; 53 sql1.Format(L"update equipment_table set count='%d' where equipment_name='%s'", count, c_name); 54 db.ExecuteSQL(sql1); 55 56 CString sql; 57 sql.Format(_T("insert into lend_table (id, eq_name,people_name,flag,lend_date,return_date) values ('%s','%s','%s','%s','%s','%s')"), id, e_name, p_name, lend_flag, l_date, r_date); 58 db.ExecuteSQL(sql); 59 60 AfxMessageBox(L"添加成功"); 61 EndDialog(true); 62 } 63 else 64 { 65 MessageBox(L"实验室没有该设备！"); 66 } 67 }
rs.GetFieldValue(L"sum_count", sum_count); //读取数据
//AfxMessageBox(sum_count);
count = _ttoi(sum_count); //CString转换int
//AfxMessageBox(count);
q.Format(L"%d", count); //int再转为CString
终于解决了我更新数据库的问题