CNAS取数仪器端升级
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MdbDAL.cs 12KB

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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Data.OleDb;
  4. using System.Linq;
  5. using System.Text;
  6. using System.Data;
  7. using CnasSynchronousCommon;
  8. namespace CnasSynchronusDAL
  9. {
  10. public static class MdbDAL
  11. {
  12. /// <summary>
  13. /// 获取所有表名和表结构
  14. /// </summary>
  15. /// <param name="strPath"></param>
  16. /// <returns></returns>
  17. public static Dictionary<string, DataTable> ReadAccessTables(string strPath, string strPwd,string strAccessVersion)
  18. {
  19. Dictionary<string, DataTable> dictTables = new Dictionary<string, DataTable>();
  20. try
  21. {
  22. //连接字符串
  23. string connstring = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  24. if(!string.IsNullOrWhiteSpace(strAccessVersion)&&strAccessVersion != "0")
  25. connstring = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  26. using (OleDbConnection conn = new OleDbConnection(connstring))
  27. {
  28. conn.Open();
  29. DataTable TablesName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" }); //得到所有sheet的名字
  30. string sql = "";
  31. OleDbDataAdapter ada = null;
  32. foreach (DataRow dr in TablesName.Rows)
  33. {
  34. string strTableName = dr[2].ToString();
  35. sql = string.Format("SELECT * FROM [{0}] where 1=0", strTableName); //查询字符串
  36. ada = new OleDbDataAdapter(sql, connstring);
  37. DataSet set = new DataSet();
  38. ada.Fill(set);
  39. dictTables.Add(strTableName.ToUpper(), set.Tables[0]);
  40. }
  41. }
  42. }
  43. catch (Exception ex)
  44. {
  45. //发生异常,写入日志
  46. AppLog.Error(ex.Message);
  47. }
  48. return dictTables;
  49. }
  50. internal static DataTable ReadAccessTableStruct(string strPath, string strPwd, string strAccessVersion, string strViewName, string strViewSQL,string strTableName)
  51. {
  52. DataTable dt = new DataTable();
  53. try
  54. {
  55. //连接字符串
  56. string connstring = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  57. if (!string.IsNullOrWhiteSpace(strAccessVersion) && strAccessVersion != "0")
  58. connstring = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  59. using (OleDbConnection conn = new OleDbConnection(connstring))
  60. {
  61. conn.Open();
  62. //DataTable TablesName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" }); //得到所有sheet的名字
  63. string sql = "";
  64. OleDbDataAdapter ada = null;
  65. if (strViewName == strTableName && string.IsNullOrWhiteSpace(strViewName))
  66. sql = strViewSQL + "where 1=0";
  67. else
  68. sql = string.Format("select * from [{0}] where 1=0", strTableName); //查询字符串
  69. ada = new OleDbDataAdapter(sql, connstring);
  70. DataSet set = new DataSet();
  71. ada.Fill(set);
  72. dt = set.Tables[0];
  73. }
  74. }
  75. catch (Exception ex)
  76. {
  77. //发生异常,写入日志
  78. AppLog.Error(ex.Message);
  79. }
  80. return dt;
  81. }
  82. public static DataTable ReadAccessTablesByDate(string strPath, string strPwd, string strTableName, string strDateColumn, string strDate, string strAccessVersion,string strSpecialDateFormat,string strViewName, string strViewSQL)
  83. {
  84. DataTable dt = new DataTable();
  85. try
  86. {
  87. //连接字符串
  88. string connstring = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  89. if (!string.IsNullOrWhiteSpace(strAccessVersion) && strAccessVersion != "0")
  90. connstring = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  91. using (OleDbConnection conn = new OleDbConnection(connstring))
  92. {
  93. conn.Open();
  94. DataTable TablesName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" }); //得到所有sheet的名字
  95. string sql = "";
  96. OleDbDataAdapter ada = null;
  97. if (strViewName == strTableName && string.IsNullOrWhiteSpace(strViewName))
  98. sql = strViewSQL + $" where {strDateColumn} is not null";
  99. else
  100. sql = string.Format("select * from [{0}] where {1} is not null", strTableName, strDateColumn); //查询字符串
  101. ada = new OleDbDataAdapter(sql, connstring);
  102. DataSet set = new DataSet();
  103. ada.Fill(set);
  104. /*将日期字段转换成可识别的数据,然后比较日期大小*/
  105. DataTable dt_Middle = set.Tables[0].Clone();
  106. DateTime dtTime = DateTime.Now;
  107. foreach (DataRow dr in set.Tables[0].Rows)
  108. {
  109. if (DateTime.TryParse(dr[strDateColumn].ToString(), out dtTime))
  110. {
  111. if (dtTime > Convert.ToDateTime(strDate))
  112. {
  113. DataRow drNew = dt_Middle.NewRow();
  114. drNew.ItemArray = dr.ItemArray;
  115. dt_Middle.Rows.Add(drNew);
  116. }
  117. }
  118. else if (IfSepcialDateFormat(dr[strDateColumn].ToString(), strSpecialDateFormat, ref dtTime))
  119. {
  120. if (dtTime > Convert.ToDateTime(strDate))
  121. {
  122. DataRow drNew = dt_Middle.NewRow();
  123. drNew.ItemArray = dr.ItemArray;
  124. dt_Middle.Rows.Add(drNew);
  125. }
  126. }
  127. }
  128. /*将数据库中某些特殊类型的日期数据转换一下格式,便于后续处理*/
  129. dt = DateAndTimeTypeOpera(dt_Middle);
  130. }
  131. }
  132. catch (Exception ex)
  133. {
  134. //发生异常,写入日志
  135. AppLog.Error(ex.Message);
  136. }
  137. return dt;
  138. }
  139. private static bool IfSepcialDateFormat(string strValue,string strSpecialDateFormat, ref DateTime dtTime)
  140. {
  141. bool bIfTrue = true;
  142. try
  143. {
  144. dtTime = DateTime.ParseExact(strValue, strSpecialDateFormat, new System.Globalization.CultureInfo("zh-CN", true));
  145. }
  146. catch (Exception e)
  147. {
  148. bIfTrue = false;
  149. AppLog.Error(e.Message);
  150. }
  151. return bIfTrue;
  152. }
  153. public static DataTable ReadAccessTablesByTableName(string strPath, string strUser, string strPwd, string strTableName,string strAccessVersion)
  154. {
  155. DataSet set = new DataSet();
  156. try
  157. {
  158. //连接字符串
  159. string connstring = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  160. if (!string.IsNullOrWhiteSpace(strAccessVersion) && strAccessVersion != "0")
  161. connstring = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Jet OLEDB:Database Password={1}", strPath, strPwd);
  162. using (OleDbConnection conn = new OleDbConnection(connstring))
  163. {
  164. conn.Open();
  165. DataTable TablesName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" }); //得到所有sheet的名字
  166. string sql = "";
  167. OleDbDataAdapter ada = null;
  168. sql = string.Format("SELECT * FROM [{0}]", strTableName); //查询字符串
  169. ada = new OleDbDataAdapter(sql, connstring);
  170. ada.Fill(set);
  171. }
  172. }
  173. catch (Exception ex)
  174. {
  175. //发生异常,写入日志
  176. AppLog.Error(ex.Message);
  177. }
  178. return set.Tables[0];
  179. }
  180. /// <summary>
  181. /// 获取数据时,单独处理某些(Date和Time)类型数据,并把数据类型转换为字符串类型
  182. /// </summary>
  183. private static DataTable DateAndTimeTypeOpera(DataTable dt)
  184. {
  185. DataTable dtNewFormat = new DataTable();
  186. List<string> lstChangeColumn = new List<string>();
  187. //添加列
  188. foreach (DataColumn dc in dt.Columns)
  189. {
  190. string strDateType = dc.DataType.ToString();
  191. switch (strDateType.ToUpper())
  192. {
  193. case "SYSTEM.DATETIME":
  194. dtNewFormat.Columns.Add(dc.ColumnName, typeof(string)); //使用字符串来存储该字段,而不是采用它的数据库格式(C#无法区分Date, Time,DateTime,前两种格式会自动补充数据,导致数据的不准确)
  195. lstChangeColumn.Add(dc.ColumnName);
  196. break;
  197. default:
  198. dtNewFormat.Columns.Add(dc.ColumnName, dc.DataType);
  199. break;
  200. }
  201. }
  202. //添加数据行
  203. foreach (DataRow dr in dt.Rows)
  204. {
  205. DataRow drNewRow = dtNewFormat.NewRow();
  206. foreach (DataColumn dc in dtNewFormat.Columns)
  207. {
  208. if (lstChangeColumn.Contains(dc.ColumnName))
  209. {
  210. if (dr[dc.ColumnName] != null && dr[dc.ColumnName].ToString() != "")
  211. {
  212. DateTime dateTime = Convert.ToDateTime(dr[dc.ColumnName]);
  213. string strTime = dateTime.ToString("HH:mm:ss");
  214. if (dateTime <= Convert.ToDateTime("1900-01-02"))
  215. {
  216. drNewRow[dc.ColumnName] = strTime;
  217. }
  218. else
  219. {
  220. if (strTime == "00:00:00")
  221. drNewRow[dc.ColumnName] = Convert.ToDateTime(dr[dc.ColumnName]).ToString("yyyy-MM-dd");
  222. else
  223. drNewRow[dc.ColumnName] = Convert.ToDateTime(dr[dc.ColumnName]).ToString("yyyy-MM-dd HH:mm:ss");
  224. }
  225. }
  226. }
  227. else
  228. {
  229. drNewRow[dc.ColumnName] = dr[dc.ColumnName];
  230. }
  231. }
  232. dtNewFormat.Rows.Add(drNewRow);
  233. }
  234. //返回数据
  235. return dtNewFormat;
  236. }
  237. }
  238. }