DataHelper.cs 42 KB

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  1. using Oracle.ManagedDataAccess.Client;
  2. using System;
  3. using System.Collections.Generic;
  4. using System.Data;
  5. using System.Text;
  6. using UAS_DeviceMonitor.PublicMethod;
  7. namespace UAS_DeviceMonitor.DataOperate
  8. {
  9. class DataHelper
  10. {
  11. //系统默认的的连接字符串
  12. private string ConnectionStrings = Properties.Settings.Default.Properties["MES"].DefaultValue.ToString();
  13. //用户选择的数据库的连接字符串
  14. public static string DBConnectionString = "Connection Timeout=0;Pooling=false;Password=select!#%*(;User ID=UAS_MES_PROD;Pooling=false;Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.253.6)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl)));";
  15. public static OracleConnection connection = null;
  16. OracleCommand command = null;
  17. /// <summary>
  18. /// 执行构造函数的时候打开数据库的链接
  19. /// </summary>
  20. public DataHelper()
  21. {
  22. try
  23. {
  24. //如果选择的是默认数据则直接用配置文件的信息连接,否则选择数据库的账套信息
  25. if (DBConnectionString == null || DBConnectionString == ConnectionStrings)
  26. connection = new OracleConnection(ConnectionStrings);
  27. else
  28. connection = new OracleConnection(DBConnectionString);
  29. connection.Open();
  30. }
  31. catch (Exception) { }
  32. }
  33. /// <summary>
  34. /// 根据表名获取该表字段数据类型
  35. /// </summary>
  36. public DataTable GetColumnDataType(string TableName)
  37. {
  38. DataTable dt = new DataTable();
  39. command = new OracleCommand("select Column_Name,Data_Type from cols where TABLE_name=upper('" + TableName + "')", connection);
  40. OracleDataAdapter ad = new OracleDataAdapter(command);
  41. ad.Fill(dt);
  42. ad.Dispose();
  43. command.Dispose();
  44. return dt;
  45. }
  46. /// <summary>
  47. /// 获取第一行第一列的信息
  48. /// </summary>
  49. public object getFieldDataByCondition(string TableName, string Field, string Condition)
  50. {
  51. DataTable dt = new DataTable();
  52. string sql = "select " + Field + " from " + TableName + " where " + Condition;
  53. Console.WriteLine(sql);
  54. command = new OracleCommand(sql, connection);
  55. OracleDataAdapter ad = new OracleDataAdapter();
  56. ad.SelectCommand = command;
  57. try
  58. {
  59. ad.Fill(dt);
  60. }
  61. catch (Exception e)
  62. {
  63. LogManager.DoLog(e.StackTrace + e.Message);
  64. connection = new OracleConnection(DBConnectionString);
  65. connection.Open();
  66. command = new OracleCommand(sql, connection);
  67. ad = new OracleDataAdapter();
  68. ad.SelectCommand = command;
  69. ad.Fill(dt);
  70. }
  71. ad.Dispose();
  72. command.Dispose();
  73. if (dt.Rows.Count > 0)
  74. {
  75. return dt.Rows[0][0];
  76. }
  77. else
  78. {
  79. return "";
  80. }
  81. }
  82. /// <summary>
  83. /// 执行打印的SQL
  84. /// </summary>
  85. /// <param name="SQL">SQL语句</param>
  86. /// <param name="Parameters">动态添加的参数,主要根据条码枪扫描获取</param>
  87. /// <returns></returns>
  88. public object ExecutePrintSQL(string SQL, params string[] Parameters)
  89. {
  90. //按照?拆分数据,然后以:Param替换问号,同时添加参数
  91. string[] Param = SQL.Split('?');
  92. int ParamNum = Param.Length - 1;
  93. //条码打印必然存在需要维护的参数
  94. if (ParamNum > 0)
  95. {
  96. StringBuilder sb = new StringBuilder();
  97. for (int i = 0; i < ParamNum; i++)
  98. {
  99. sb.Append(Param[i] + ":Param" + i);
  100. }
  101. command = new OracleCommand(sb.ToString(), connection);
  102. for (int i = 0; i < ParamNum; i++)
  103. {
  104. command.Parameters.Add("Param" + i, OracleDbType.Varchar2, Parameters[i], ParameterDirection.Input);
  105. }
  106. OracleDataAdapter ad = new OracleDataAdapter(command);
  107. DataTable dt = new DataTable();
  108. ad.Fill(dt);
  109. ad.Dispose();
  110. command.Dispose();
  111. return dt;
  112. }
  113. return "参数错误,请检查SQL语句";
  114. }
  115. /// <summary>
  116. /// 获取指定表的记录的条数 ,带条件
  117. /// </summary>
  118. /// <returns></returns>
  119. public int getRowCount(string TableName, string Condition)
  120. {
  121. DataTable dt = new DataTable();
  122. string sql = "select count(1) from " + TableName + " where " + Condition;
  123. command = new OracleCommand(sql, connection);
  124. OracleDataAdapter ad = new OracleDataAdapter(command);
  125. ad.Fill(dt);
  126. ad.Dispose();
  127. command.Dispose();
  128. return int.Parse(dt.Rows[0][0].ToString());
  129. }
  130. /// <summary>
  131. /// 获取指定表的记录的条数 ,不带条件
  132. /// </summary>
  133. /// <param name="TableName"></param>
  134. /// <returns></returns>
  135. public int getRowCount(string TableName)
  136. {
  137. DataTable dt = new DataTable();
  138. string sql = "select count(1) from " + TableName;
  139. command = new OracleCommand(sql, connection);
  140. OracleDataAdapter ad = new OracleDataAdapter(command);
  141. ad.Fill(dt);
  142. ad.Dispose();
  143. command.Dispose();
  144. return int.Parse(dt.Rows[0][0].ToString());
  145. }
  146. /// <summary>
  147. /// 通过表名和获取单行的记录
  148. /// </summary>
  149. public DataTable getFieldsDataByCondition(string TableName, string[] Fields, string Condition)
  150. {
  151. DataTable dt = new DataTable();
  152. string sql = "select ";
  153. sql += AddField(Fields);
  154. sql += " from " + TableName + " where " + Condition + " and rownum=1";
  155. command = new OracleCommand(sql, connection);
  156. OracleDataAdapter ad = new OracleDataAdapter(command);
  157. try
  158. {
  159. ad.Fill(dt);
  160. }
  161. catch (Exception)
  162. {
  163. connection = new OracleConnection(DBConnectionString);
  164. connection.Open();
  165. command = new OracleCommand(sql, connection);
  166. ad = new OracleDataAdapter();
  167. ad.SelectCommand = command;
  168. ad.Fill(dt);
  169. }
  170. ad.Dispose();
  171. command.Dispose();
  172. return dt;
  173. }
  174. /// <summary>
  175. /// 将DataTable导入到指定的表中
  176. /// </summary>
  177. /// <param name="DataTable"></param>
  178. /// <param name="TableName"></param>
  179. public void InsertDataTable(DataTable DataTable, string TableName)
  180. {
  181. for (int i = 0; i < DataTable.Rows.Count; i++)
  182. {
  183. for (int j = 0; j < DataTable.Columns.Count; j++)
  184. {
  185. }
  186. }
  187. }
  188. /// <summary>
  189. /// 按分页获取数据
  190. /// </summary>
  191. /// <param name="TableName">表名</param>
  192. /// <param name="Fields">查询字段</param>
  193. /// <param name="CurrentPage">当前页面</param>
  194. /// <param name="PageSize">页面展示条数</param>
  195. /// <param name="Caller"></param>
  196. /// <returns></returns>
  197. // SELECT * FROM (SELECT A.* FROM (SELECT* FROM datalist) A WHERE ROWNUM <= 50) WHERE ROWNUM >= 21
  198. public DataTable getFieldsDatasByPageing(string TableName, string Fields, int CurrentPage, int PageSize, string Caller, params string[] condition)
  199. {
  200. DataTable dt = new DataTable();
  201. StringBuilder sql = new StringBuilder();
  202. //先查询出配置出去的列
  203. //获取查询的列
  204. string[] caption = GetCaptionFromField(Fields);
  205. //获取对应列的描述
  206. string[] field = GetField(Fields);
  207. sql.Append(" select * from (select RowNum RN, A.* from (select ");
  208. sql.Append(AddField(caption));
  209. if (condition.Length > 0)
  210. {
  211. if (condition[0] != null && condition[0].Trim() != "")
  212. sql.Append(" from " + TableName + " where " + condition[0] + " ) A where ROWNUM <=" + CurrentPage * PageSize + ") where RN>" + (CurrentPage - 1) * PageSize);
  213. else
  214. sql.Append(" from " + TableName + ") A where ROWNUM <= " + CurrentPage * PageSize + ") where RN> " + (CurrentPage - 1) * PageSize);
  215. }
  216. command = new OracleCommand(sql.ToString(), connection);
  217. OracleDataAdapter ad = new OracleDataAdapter(command);
  218. ad.Fill(dt);
  219. ad.Dispose();
  220. command.Dispose();
  221. dt.Columns.RemoveAt(0);
  222. foreach (DataColumn dc in dt.Columns)
  223. {
  224. dc.ColumnName = field[dt.Columns.IndexOf(dc)];
  225. dc.Caption = caption[dt.Columns.IndexOf(dc)];
  226. }
  227. return dt;
  228. }
  229. /// <summary>
  230. /// 通过表名,字段和条件获取DataTable类型的数据
  231. /// </summary>
  232. public DataTable getFieldsDatasByCondition(string TableName, string[] Fields, string Condition)
  233. {
  234. DataTable dt = new DataTable();
  235. string sql = "select ";
  236. sql += AddField(Fields);
  237. sql += " from " + TableName + " where " + Condition;
  238. command = new OracleCommand(sql, connection);
  239. OracleDataAdapter ad = new OracleDataAdapter(command);
  240. try
  241. {
  242. ad.Fill(dt);
  243. }
  244. catch (Exception)
  245. {
  246. connection = new OracleConnection(DBConnectionString);
  247. connection.Open();
  248. command = new OracleCommand(sql, connection);
  249. ad = new OracleDataAdapter();
  250. ad.SelectCommand = command;
  251. ad.Fill(dt);
  252. }
  253. ad.Dispose();
  254. command.Dispose();
  255. return dt;
  256. }
  257. /// <summary>
  258. /// 通过表名,字段获取DataTable类型的数据
  259. /// </summary>
  260. public DataTable getFieldsDatas(string TableName, string Fields)
  261. {
  262. DataTable dt = new DataTable();
  263. string sql = "select ";
  264. sql += Fields;
  265. sql += " from " + TableName;
  266. command = new OracleCommand(sql, connection);
  267. OracleDataAdapter ad = new OracleDataAdapter(command);
  268. ad.SelectCommand = command;
  269. try
  270. {
  271. ad.Fill(dt);
  272. }
  273. catch (Exception)
  274. {
  275. connection = new OracleConnection(DBConnectionString);
  276. connection.Open();
  277. command = new OracleCommand(sql, connection);
  278. ad = new OracleDataAdapter();
  279. ad.SelectCommand = command;
  280. ad.Fill(dt);
  281. }
  282. ad.Dispose();
  283. command.Dispose();
  284. return dt;
  285. }
  286. /// <summary>
  287. /// 根据DataTable和指定的表名更新数据,如果需要保存新增的数据则需要传递一条Insert的SQL
  288. /// </summary>
  289. /// <param name="DataTable"></param>
  290. /// <param name="TableName"></param>
  291. /// <param name="Condition"></param>
  292. public void UpDateTableByCondition(DataTable DataTable, string TableName, string PrimaryKey, params string[] sql)
  293. {
  294. if (DataTable == null)
  295. {
  296. return;
  297. }
  298. StringBuilder sb = new StringBuilder();
  299. //预防插入的DataTable中存在不属于该表的列,在进行下一步操作之前全部剔除
  300. DataTable data = (DataTable)ExecuteSql("select Column_Name,Data_Type from cols where TABLE_name=upper('" + TableName + "')", "select");
  301. //将所有的字段拼接起来
  302. for (int i = 0; i < data.Rows.Count; i++)
  303. {
  304. sb.Append("#" + data.Rows[i]["Column_Name"].ToString());
  305. }
  306. //移除掉所有不属于该表的列
  307. for (int i = DataTable.Columns.Count - 1; i >= 0; i--)
  308. {
  309. if (!sb.ToString().Contains(DataTable.Columns[i].ColumnName.ToUpper()))
  310. {
  311. DataTable.Columns.RemoveAt(i);
  312. }
  313. }
  314. sb.Clear();
  315. //计算有多少个是新加的行,根据主键为空来进行判断
  316. int NewRowCount = 0;
  317. for (int i = 0; i < DataTable.Rows.Count; i++)
  318. {
  319. if (DataTable.Rows[i][PrimaryKey] == null || DataTable.Rows[i][PrimaryKey].ToString() == "")
  320. {
  321. NewRowCount = NewRowCount + 1;
  322. }
  323. }
  324. if (sql.Length > 0)
  325. {
  326. if (NewRowCount > 0)
  327. {
  328. //获取参数的个数
  329. int paramsNum = sql[0].Split(':').Length - 1;
  330. //解析参数的数据
  331. string[] param = GetParamFromSQL(sql[0]);
  332. //新建一个二维数组去
  333. string[][] param_array = new string[paramsNum][];
  334. //实例化每个一维数组
  335. for (int i = 0; i < paramsNum; i++)
  336. {
  337. param_array[i] = new string[NewRowCount];
  338. }
  339. //设置每列参数的索引
  340. int num = 0;
  341. //变量所有的行,如果有主键为空的则移除,不为空的进行参数的拼接
  342. for (int i = DataTable.Rows.Count - 1; i >= 0; i--)
  343. {
  344. if (DataTable.Rows[i][PrimaryKey] == null || DataTable.Rows[i][PrimaryKey].ToString() == "")
  345. {
  346. //当为新添加行的时候才去设置参数,设置过后索引+1
  347. for (int j = 0; j < paramsNum; j++)
  348. {
  349. param_array[j][num] = DataTable.Rows[i][param[j]].ToString();
  350. }
  351. DataTable.Rows.RemoveAt(i);
  352. num++;
  353. }
  354. }
  355. BatchInsertDataTable(sql[0], param, param_array);
  356. }
  357. }
  358. //不是新增行的启用更新的方法
  359. sb.Append("update " + TableName + " set ");
  360. //拼接语句,特殊处理日期
  361. foreach (DataColumn dc in DataTable.Columns)
  362. {
  363. if (!dc.DataType.ToString().Equals("System.DateTime"))
  364. {
  365. sb.Append(dc.Caption + "=:" + dc.Caption + ",");
  366. }
  367. else
  368. {
  369. sb.Append(dc.Caption + "=:" + dc.Caption + ",");
  370. }
  371. }
  372. sb.Remove(sb.Length - 1, 1);
  373. sb.Append(" where " + PrimaryKey + "=:" + PrimaryKey);
  374. command = new OracleCommand(sb.ToString(), connection);
  375. OracleDataAdapter ad = new OracleDataAdapter(command);
  376. // 参数的长度是DataTable的行数决定的
  377. command.ArrayBindCount = DataTable.Rows.Count;
  378. //默认全部是Varchar2类型的
  379. OracleDbType ob = OracleDbType.Varchar2;
  380. for (int i = 0; i < DataTable.Columns.Count; i++)
  381. {
  382. object[] param = new object[DataTable.Rows.Count];
  383. for (int j = 0; j < DataTable.Rows.Count; j++)
  384. {
  385. DateTime dt = DateTime.Now;
  386. if (DateTime.TryParse(DataTable.Rows[j][i].ToString(), out dt))
  387. {
  388. param[j] = dt;
  389. ob = OracleDbType.Date;
  390. }
  391. else
  392. {
  393. ob = OracleDbType.Varchar2;
  394. param[j] = DataTable.Rows[j][i];
  395. }
  396. }
  397. //添加批量更新的参数
  398. command.Parameters.Add(new OracleParameter(DataTable.Columns[i].Caption, ob, param, ParameterDirection.Input));
  399. }
  400. ad.UpdateCommand = command;
  401. ad.Update(DataTable);
  402. ad.Dispose();
  403. command.Dispose();
  404. }
  405. /// <summary>
  406. /// 获取DbFind的数据的DataTable的结构
  407. /// </summary>
  408. /// <param name="field"></param>
  409. /// <param name="caller"></param>
  410. /// <returns></returns>
  411. public DataTable GetDbFindDataTable(string field, string caller)
  412. {
  413. string sql = "select * from dbfindsetui where ds_caller='" + caller + "' and ds_whichui='" + field + "'";
  414. DataTable dt = (DataTable)ExecuteSql(sql, "select");
  415. if (dt.Rows.Count != 0)
  416. {
  417. //通过#号分割字段
  418. string[] dbfield = dt.Rows[0]["ds_findtoui"].ToString().Split('#');
  419. string[] cnfield = dt.Rows[0]["ds_dbcaption"].ToString().Split('#');
  420. //获取查询要查询的Table
  421. string dbtable = dt.Rows[0]["ds_tables"].ToString();
  422. //拼接查询的字段
  423. for (int i = 0; i < dbfield.Length; i++)
  424. {
  425. dbfield[i] = dbfield[i].Split(',')[0];
  426. }
  427. //新建一个空的DataTable
  428. DataTable dt1 = new DataTable();
  429. //往空的DataTable添加结构,ColumnName是中文,Caption是实际的字段名称
  430. for (int i = 0; i < cnfield.Length; i++)
  431. {
  432. dt1.Columns.Add(cnfield[i]);
  433. dt1.Columns[i].Caption = dbfield[i];
  434. }
  435. //返回一个带有结构的空的DataTable
  436. //DbFind.BindTable1 = dbtable;
  437. return dt1;
  438. }
  439. else
  440. {
  441. return null;
  442. }
  443. }
  444. /// <summary>
  445. /// 检测内容是否存在
  446. /// </summary>
  447. /// <param name="TableName"></param>
  448. /// <param name="Condition"></param>
  449. /// <returns></returns>
  450. public bool CheckExist(string TableName, string Condition)
  451. {
  452. string sql = "select count(1) from " + TableName + " where " + Condition;
  453. command = new OracleCommand(sql, connection);
  454. OracleDataAdapter ad = new OracleDataAdapter(command);
  455. DataTable dt = new DataTable();
  456. try
  457. {
  458. ad.Fill(dt);
  459. }
  460. catch (Exception)
  461. {
  462. connection = new OracleConnection(DBConnectionString);
  463. connection.Open();
  464. command = new OracleCommand(sql, connection);
  465. ad = new OracleDataAdapter();
  466. ad.SelectCommand = command;
  467. ad.Fill(dt);
  468. }
  469. ad.Dispose();
  470. command.Dispose();
  471. return int.Parse(dt.Rows[0][0].ToString()) > 0;
  472. }
  473. /// <summary>
  474. /// 直接执行SQL,同时传入SQL的类型
  475. /// </summary>
  476. /// <param name="SQL"></param>
  477. /// <param name="Type"></param>
  478. /// <returns></returns>
  479. public object ExecuteSql(string SQL, string Type, params object[] names)
  480. {
  481. object result = null;
  482. command = new OracleCommand(SQL, connection);
  483. //用来拼接参数的
  484. if (names.Length > 0)
  485. {
  486. string[] par = SQL.Split(':');
  487. //用来存参数的数组
  488. StringBuilder[] addpar = new StringBuilder[par.Length - 1];
  489. for (int i = 0; i < par.Length - 1; i++)
  490. {
  491. //新建一个char类型的数组用来存储每个字节的变量
  492. char[] c = par[i + 1].ToCharArray();
  493. addpar[i] = new StringBuilder();
  494. for (int j = 0; j < c.Length; j++)
  495. {
  496. if (c[j] != ' ' && c[j] != ',' && c[j] != ')')
  497. {
  498. addpar[i].Append(c[j]);
  499. }
  500. else
  501. {
  502. break;
  503. }
  504. }
  505. }
  506. for (int i = 0; i < addpar.Length; i++)
  507. command.Parameters.Add(new OracleParameter(addpar[i].ToString(), OracleDbType.Varchar2, names[i], ParameterDirection.Input));
  508. }
  509. Console.WriteLine(SQL);
  510. switch (Type.ToUpper())
  511. {
  512. case "SELECT":
  513. OracleDataAdapter ad = new OracleDataAdapter(command);
  514. result = new DataTable();
  515. try
  516. {
  517. ad.Fill((DataTable)result);
  518. }
  519. catch (Exception e)
  520. {
  521. LogManager.DoLog(e.StackTrace + e.Message);
  522. connection = new OracleConnection(DBConnectionString);
  523. connection.Open();
  524. command = new OracleCommand(SQL, connection);
  525. ad = new OracleDataAdapter();
  526. ad.SelectCommand = command;
  527. ad.Fill((DataTable)result);
  528. }
  529. break;
  530. case "DELETE":
  531. try
  532. {
  533. result = command.ExecuteNonQuery();
  534. }
  535. catch (Exception)
  536. {
  537. command.Connection = new OracleConnection(DBConnectionString);
  538. command.Connection.Open();
  539. result = command.ExecuteNonQuery();
  540. }
  541. break;
  542. case "UPDATE":
  543. try
  544. {
  545. result = command.ExecuteNonQuery();
  546. }
  547. catch (Exception)
  548. {
  549. command.Connection = new OracleConnection(DBConnectionString);
  550. command.Connection.Open();
  551. result = command.ExecuteNonQuery();
  552. }
  553. break;
  554. case "INSERT":
  555. try
  556. {
  557. result = command.ExecuteNonQuery();
  558. }
  559. catch (Exception)
  560. {
  561. command.Connection = new OracleConnection(DBConnectionString);
  562. command.Connection.Open();
  563. result = command.ExecuteNonQuery();
  564. }
  565. break;
  566. }
  567. command.Dispose();
  568. return result;
  569. }
  570. /// <summary>
  571. /// 为了同步BS端的条码维护,检测时允许问号的存在,在检测时默认将问号换成:Param参数
  572. /// </summary>
  573. /// <param name="SQL"></param>
  574. public void CheckSQL(string SQL)
  575. {
  576. SQL = SQL.Replace("?", ":Param");
  577. command = new OracleCommand(SQL, connection);
  578. command.ExecuteNonQuery();
  579. command.Dispose();
  580. }
  581. public int GetDistinctRowCount(string TableName, string Field)
  582. {
  583. DataTable dt = new DataTable();
  584. string sql = "select distinct count('" + Field + "') from " + TableName;
  585. command = new OracleCommand(sql, connection);
  586. OracleDataAdapter ad = new OracleDataAdapter(command);
  587. try
  588. {
  589. ad.Fill(dt);
  590. }
  591. catch (Exception)
  592. {
  593. connection = new OracleConnection(DBConnectionString);
  594. connection.Open();
  595. command = new OracleCommand(sql, connection);
  596. ad = new OracleDataAdapter();
  597. ad.SelectCommand = command;
  598. ad.Fill(dt);
  599. }
  600. ad.Dispose();
  601. command.Dispose();
  602. return int.Parse(dt.Rows[0][0].ToString());
  603. }
  604. /// <summary>
  605. /// 根据Caller获取流水号
  606. /// </summary>
  607. /// <param name="Caller"></param>
  608. /// <returns></returns>
  609. public string GetSerialNumberByCaller(string Caller)
  610. {
  611. string SerialNumber = getFieldDataByCondition("MaxNumbers", "mn_number", "mn_tablename='" + Caller + "'").ToString();
  612. UpdateByCondition("MaxNumbers", "mn_number=mn_number+1", "mn_tablename='" + Caller + "'");
  613. return SerialNumber;
  614. }
  615. /// <summary>
  616. /// 根据主键ID删除表的数据
  617. /// </summary>
  618. /// <param name="TableName">表名</param>
  619. /// <param name="ID">主键</param>
  620. /// <param name="DeleteID">需要删除主键ID的数组</param>
  621. public void DeleteDataByID(string TableName, string ID, int[] DeleteID)
  622. {
  623. string sql = "delete from " + TableName + " where " + ID + " =:DeleteID";
  624. command = new OracleCommand(sql, connection);
  625. command.ArrayBindCount = DeleteID.Length;
  626. command.Parameters.Add(new OracleParameter("DeleteID", OracleDbType.Long, DeleteID, ParameterDirection.Input));
  627. try
  628. {
  629. command.ExecuteNonQuery();
  630. }
  631. catch (Exception)
  632. {
  633. command.Connection = new OracleConnection(DBConnectionString);
  634. command.Connection.Open();
  635. command.ExecuteNonQuery();
  636. }
  637. command.Dispose();
  638. }
  639. /// <summary>
  640. /// 通过序列的名称获取序列
  641. /// </summary>
  642. /// <param name="SeqName"></param>
  643. /// <returns></returns>
  644. public string GetSEQ(string SeqName)
  645. {
  646. DataTable dt = new DataTable();
  647. dt = (DataTable)ExecuteSql("SELECT " + SeqName + ".NEXTVAL FROM DUAL", "select");
  648. return dt.Rows[0][0].ToString();
  649. }
  650. /// <summary>
  651. /// 通过序列的名称获取序列
  652. /// </summary>
  653. /// <param name="SeqName"></param>
  654. /// <returns></returns>
  655. public string[] GetSEQ(string SeqName, int Num)
  656. {
  657. DataTable dt = new DataTable();
  658. dt = (DataTable)ExecuteSql("SELECT " + SeqName + ".nextval FROM DUAL CONNECT BY LEVEL<=" + Num, "select");
  659. string[] SerialNum = new string[dt.Rows.Count];
  660. for (int i = 0; i < dt.Rows.Count; i++)
  661. {
  662. SerialNum[i] = dt.Rows[i][0].ToString();
  663. }
  664. return SerialNum;
  665. }
  666. public void SaveDataTable(DataTable dt, string TableName, string ID, params string[] sql)
  667. {
  668. if (dt == null)
  669. {
  670. return;
  671. }
  672. StringBuilder sb = new StringBuilder();
  673. //预防插入的DataTable中存在不属于该表的列,在进行下一步操作之前全部剔除
  674. DataTable data = (DataTable)ExecuteSql("select Column_Name,Data_Type from cols where TABLE_name=upper('" + TableName + "')", "select");
  675. //将所有的字段拼接起来
  676. for (int i = 0; i < data.Rows.Count; i++)
  677. {
  678. sb.Append("#" + data.Rows[i]["Column_Name"].ToString());
  679. }
  680. //移除掉所有不属于该表的列
  681. for (int i = dt.Columns.Count - 1; i >= 0; i--)
  682. {
  683. if (!sb.ToString().Contains(dt.Columns[i].ColumnName.ToUpper()))
  684. {
  685. dt.Columns.RemoveAt(i);
  686. }
  687. }
  688. sb.Clear();
  689. //计算有多少个是新加的行,根据主键为空来进行判断
  690. int NewRowCount = 0;
  691. for (int i = 0; i < dt.Rows.Count; i++)
  692. {
  693. if (dt.Rows[i][ID] == null || dt.Rows[i][ID].ToString() == "")
  694. {
  695. NewRowCount = NewRowCount + 1;
  696. }
  697. }
  698. if (sql.Length > 0)
  699. {
  700. if (NewRowCount > 0)
  701. {
  702. //获取参数的个数
  703. int paramsNum = sql[0].Split(':').Length - 1;
  704. //解析参数的数据
  705. string[] param = GetParamFromSQL(sql[0]);
  706. //新建一个二维数组去
  707. string[][] param_array = new string[paramsNum][];
  708. //实例化每个一维数组
  709. for (int i = 0; i < paramsNum; i++)
  710. {
  711. param_array[i] = new string[NewRowCount];
  712. }
  713. //设置每列参数的索引
  714. int num = 0;
  715. //变量所有的行,如果有主键为空的则移除,不为空的进行参数的拼接
  716. for (int i = dt.Rows.Count - 1; i >= 0; i--)
  717. {
  718. if (dt.Rows[i][ID] == null || dt.Rows[i][ID].ToString() == "")
  719. {
  720. //当为新添加行的时候才去设置参数,设置过后索引+1
  721. for (int j = 0; j < paramsNum; j++)
  722. {
  723. param_array[j][num] = dt.Rows[i][param[j]].ToString();
  724. }
  725. dt.Rows.RemoveAt(i);
  726. num++;
  727. }
  728. }
  729. BatchInsertDataTable(sql[0], param, param_array);
  730. }
  731. }
  732. sb.Clear();
  733. sb.Append("update " + TableName + " set ");
  734. int ColumnCount = dt.Columns.Count;
  735. int RowCount = dt.Rows.Count;
  736. //存数据的参数
  737. List<string[]> Parameter = new List<string[]>();
  738. //存参数名的参数
  739. string[] ParName = new string[ColumnCount];
  740. for (int i = 0; i < ColumnCount; i++)
  741. {
  742. ParName[i] = dt.Columns[i].ColumnName;
  743. if (i == dt.Columns.Count - 1)
  744. sb.Append(dt.Columns[i].ColumnName + "=:" + dt.Columns[i].ColumnName);
  745. else
  746. sb.Append(dt.Columns[i].ColumnName + "=:" + dt.Columns[i].ColumnName + ",");
  747. }
  748. sb.Append(" where " + ID + " =:" + ID);
  749. //先添加参数
  750. Parameter.Add(ParName);
  751. //添加参数的具体内容
  752. for (int i = 0; i < ColumnCount; i++)
  753. {
  754. string[] par = new string[RowCount];
  755. for (int j = 0; j < RowCount; j++)
  756. {
  757. par[j] = dt.Rows[j][i].ToString();
  758. }
  759. Parameter.Add(par);
  760. }
  761. BatchInsert(sb.ToString(), Parameter.ToArray());
  762. }
  763. /// <summary>
  764. /// 批量通过SQL来执行插入操作 ,参数的第一个数一个string[]数组,用来传递需要添加的参数的名称
  765. /// 之后的是名称参数数组对应的 ,所有的插入参数数据长度必须是一致的
  766. /// </summary>
  767. /// <param name="sql"></param>
  768. /// <param name="names"></param>
  769. public void BatchInsert(string sql, params object[][] names)
  770. {
  771. command = new OracleCommand(sql, connection);
  772. command.ArrayBindCount = names[1].Length;
  773. if (names[1].Length == 0)
  774. {
  775. return;
  776. }
  777. //因为第一个数组保存的是参数的名称,所以循环从1而不是0开始
  778. //将第一个数组的下标固定为0作为循环添加的参数的名称
  779. for (int i = 1; i <= names[0].Length; i++)
  780. {
  781. command.Parameters.Add(new OracleParameter(names[0][i - 1].ToString(), OracleDbType.Varchar2, names[i], ParameterDirection.Input));
  782. }
  783. try
  784. {
  785. command.ExecuteNonQuery();
  786. }
  787. catch (Exception)
  788. {
  789. command.Connection = new OracleConnection(DBConnectionString);
  790. command.Connection.Open();
  791. command.ExecuteNonQuery();
  792. }
  793. command.Dispose();
  794. }
  795. public void BatchInsertDataTable(string sql, string[] param, params object[][] param1)
  796. {
  797. command = new OracleCommand(sql, connection);
  798. command.ArrayBindCount = param1[0].Length;
  799. //因为第一个数组保存的是参数的名称,所以循环从1而不是0开始
  800. //将第一个数组的下标固定为0作为循环添加的参数的名称
  801. for (int i = 0; i < param.Length; i++)
  802. {
  803. command.Parameters.Add(new OracleParameter(param[i].ToString(), OracleDbType.Varchar2, param1[i], ParameterDirection.Input));
  804. }
  805. try
  806. {
  807. command.ExecuteNonQuery();
  808. }
  809. catch (Exception)
  810. {
  811. command.Connection = new OracleConnection(DBConnectionString);
  812. command.Connection.Open();
  813. command.ExecuteNonQuery();
  814. }
  815. command.Dispose();
  816. }
  817. /// <summary>
  818. /// 取Configs表中的配置,进行该客户是否执行某个操作
  819. /// </summary>
  820. /// <param name="Code"></param>
  821. /// <param name="Caller"></param>
  822. /// <returns></returns>
  823. public object GetConfig(string Code, string Caller)
  824. {
  825. DataTable dt = new DataTable();
  826. string sql = "select Data from configs where code='" + Code + "' and caller='" + Caller + "'";
  827. dt = (DataTable)ExecuteSql(sql, "select");
  828. if (dt.Rows.Count == 0)
  829. {
  830. return "";
  831. }
  832. else
  833. {
  834. return dt.Rows[0]["Data"];
  835. }
  836. }
  837. //将数据类型的列类型转换为DataTable
  838. public DataTable DataTypeColumnToDataTable(DataTable dt)
  839. {
  840. DataTable dt1 = new DataTable();
  841. dt1.Rows.Add();
  842. foreach (DataRow dr in dt.Rows)
  843. {
  844. dt1.Columns.Add(dr[0].ToString());
  845. int index = dt.Rows.IndexOf(dr);
  846. if (dr[1].ToString() == "NUMBER")
  847. {
  848. dt1.Rows[0][index] = 0;
  849. }
  850. if (dr[1].ToString() == "VARCHAR2")
  851. {
  852. dt1.Rows[0][index] = "这是一段文字";
  853. }
  854. if (dr[1].ToString() == "DATE")
  855. {
  856. dt1.Rows[0][index] = DateTime.Now.ToString("yyyy-MM-dd");
  857. }
  858. if (dr[1].ToString() == "FLOAT")
  859. {
  860. dt1.Rows[0][index] = 1.0;
  861. }
  862. if (dr[1].ToString() == "CLOB")
  863. {
  864. dt1.Rows[0][index] = "一段长文字";
  865. }
  866. }
  867. return dt1;
  868. }
  869. /// <summary>
  870. /// 通过条件更新
  871. /// </summary>
  872. /// <param name="TableName"></param>
  873. /// <param name="update"></param>
  874. /// <param name="condition"></param>
  875. public string UpdateByCondition(string TableName, string update, string condition)
  876. {
  877. string sql = "update " + TableName + " set " + update + " where " + condition;
  878. command = new OracleCommand(sql, connection);
  879. try
  880. {
  881. command.ExecuteNonQuery();
  882. }
  883. catch (Exception)
  884. {
  885. command.Connection = new OracleConnection(DBConnectionString);
  886. command.Connection.Open();
  887. command.ExecuteNonQuery();
  888. }
  889. command.Dispose();
  890. return sql;
  891. }
  892. /// <summary>
  893. /// 调用存储过程
  894. /// </summary>
  895. /// <param name="ProcedureName"></param>
  896. /// <param name="param"></param>
  897. public void CallProcedure(string ProcedureName, ref string[] param)
  898. {
  899. command = new OracleCommand(ProcedureName);
  900. command.Connection = connection;
  901. command.CommandText = ProcedureName;
  902. command.CommandType = CommandType.StoredProcedure;
  903. for (int i = 0; i < param.Length; i++)
  904. command.Parameters.Add(new OracleParameter(param[i].ToString(), OracleDbType.Varchar2, 200, param[i], ParameterDirection.InputOutput));
  905. try
  906. {
  907. command.ExecuteNonQuery();
  908. }
  909. catch (Exception)
  910. {
  911. command.Connection = new OracleConnection(DBConnectionString);
  912. command.Connection.Open();
  913. command.ExecuteNonQuery();
  914. }
  915. for (int i = 0; i < command.Parameters.Count; i++)
  916. param[i] = command.Parameters[i].Value.ToString();
  917. command.Dispose();
  918. }
  919. /// <summary>
  920. /// 出现异常进行回滚的执行方法
  921. /// </summary>
  922. /// <param name="SQL"></param>
  923. public void ExecuteSQLTran(params string[] SQL)
  924. {
  925. OracleTransaction tx = connection.BeginTransaction();
  926. command = new OracleCommand();
  927. command.Connection = connection;
  928. command.Transaction = tx;
  929. try
  930. {
  931. foreach (string sql in SQL)
  932. {
  933. if (!String.IsNullOrEmpty(sql))
  934. {
  935. command.CommandText = sql;
  936. try
  937. {
  938. command.ExecuteNonQuery();
  939. }
  940. catch (Exception)
  941. {
  942. command.Connection = new OracleConnection(DBConnectionString);
  943. command.Connection.Open();
  944. command.ExecuteNonQuery();
  945. }
  946. }
  947. }
  948. tx.Commit();
  949. }
  950. catch (Exception e)
  951. {
  952. tx.Rollback();
  953. throw new Exception(e.Message);
  954. }
  955. command.Dispose();
  956. }
  957. /// <summary>
  958. /// 用于将string 的数组转换成SQL的查询内容
  959. /// </summary>
  960. /// <param name="Fields"></param>
  961. /// <returns></returns>
  962. private string AddField(string[] Fields)
  963. {
  964. string sql = " ";
  965. foreach (string field in Fields)
  966. {
  967. sql += field + ",";
  968. }
  969. return sql.Substring(0, sql.Length - 1);
  970. }
  971. /// <summary>
  972. /// 通过查询的内容获取到字段的描述
  973. /// </summary>
  974. /// <param name="field"></param>
  975. /// <returns></returns>
  976. private static string[] GetCaptionFromField(string field)
  977. {
  978. string[] caption = field.Split(',');
  979. for (int i = 0; i < caption.Length; i++)
  980. {
  981. caption[i] = caption[i].Substring(0, caption[i].LastIndexOf("as")).Trim();
  982. }
  983. return caption;
  984. }
  985. /// <summary>
  986. /// 通过查询的语句获取查询的字段
  987. /// </summary>
  988. /// <param name="field"></param>
  989. /// <returns></returns>
  990. private static string[] GetField(string field)
  991. {
  992. string[] fields = field.Split(',');
  993. for (int i = 0; i < fields.Length; i++)
  994. {
  995. fields[i] = fields[i].Substring(fields[i].LastIndexOf("as") + 2, fields[i].Length - fields[i].LastIndexOf("as") - 2).Trim();
  996. }
  997. return fields;
  998. }
  999. public object GetLabelParam(string sql)
  1000. {
  1001. DataTable dt = new DataTable();
  1002. command = new OracleCommand(sql, connection);
  1003. OracleDataAdapter ad = new OracleDataAdapter();
  1004. ad.SelectCommand = command;
  1005. try
  1006. {
  1007. ad.Fill(dt);
  1008. }
  1009. catch (Exception)
  1010. {
  1011. connection = new OracleConnection(DBConnectionString);
  1012. connection.Open();
  1013. command = new OracleCommand(sql, connection);
  1014. ad = new OracleDataAdapter();
  1015. ad.SelectCommand = command;
  1016. ad.Fill(dt);
  1017. }
  1018. if (dt.Rows.Count > 0)
  1019. {
  1020. ad.Dispose();
  1021. command.Dispose();
  1022. return dt.Rows[0][0];
  1023. }
  1024. else
  1025. {
  1026. command.Dispose();
  1027. return "";
  1028. }
  1029. }
  1030. public static string[] GetParamFromSQL(string SQL)
  1031. {
  1032. string[] par = SQL.Split(':');
  1033. //用来存参数的数组
  1034. StringBuilder[] addpar = new StringBuilder[par.Length - 1];
  1035. string[] param = new string[par.Length - 1];
  1036. for (int i = 0; i < par.Length - 1; i++)
  1037. {
  1038. //新建一个char类型的数组用来存储每个字节的变量
  1039. char[] c = par[i + 1].ToCharArray();
  1040. addpar[i] = new StringBuilder();
  1041. for (int j = 0; j < c.Length; j++)
  1042. {
  1043. if (c[j] != ' ' && c[j] != ',' && c[j] != ')')
  1044. {
  1045. addpar[i].Append(c[j]);
  1046. }
  1047. else
  1048. {
  1049. break;
  1050. }
  1051. }
  1052. }
  1053. for (int i = 0; i < par.Length - 1; i++)
  1054. {
  1055. param[i] = addpar[i].ToString();
  1056. }
  1057. return param;
  1058. }
  1059. public void Dispose()
  1060. {
  1061. command.Dispose();
  1062. connection.Dispose();
  1063. }
  1064. }
  1065. }