1.         #region 下载时重构insert（数据带null处理）
  2.         public void DownDataInsert(DataTable _dt, string TableName,DBHelper dbhelper)
  3.         {
  4.             List<string> _List = new List<string>();
  5.             try
  6.             {
  7.                 if (_dt == null)
  8.                 {
  9.                     throw new Exception("datatable不可为空！");
  10.                 }
  11.                 if (string.IsNullOrEmpty(TableName))
  12.                 {
  13.                     throw new Exception("表名不可为空！");
  14.                 }
  15.  
  16.                 for (int i = ; i < _dt.Rows.Count; i++)
  17.                 {
  18.                     string sqlstring = string.Empty;
  19.                     string sqlString = "insert into " + TableName + " ({0}) VALUES ({1})";
  20.                     string Names = string.Empty;
  21.                     string values = string.Empty;
  22.                     foreach (DataColumn c in _dt.Columns)
  23.                     {
  24.                         if (_dt.Rows[i][c.ColumnName] != null && !string.IsNullOrEmpty(_dt.Rows[i][c.ColumnName].ToString()))
  25.                         {
  26.                             Names += (string.IsNullOrEmpty(Names) ? "" : ",") + c.ColumnName;
  27.                             if (IsType(c.DataType, "System.Nullable`1[System.Int16]") ||
  28.                                 IsType(c.DataType, "System.Nullable`1[System.Int32]") ||
  29.                                 IsType(c.DataType, "System.Nullable`1[System.Int64]") ||
  30.                                 IsType(c.DataType, "System.Nullable`1[System.Double]") ||
  31.                                 IsType(c.DataType, "System.Nullable`1[System.Decimal]") ||
  32.                                c.DataType == typeof(System.Int16) ||
  33.                                c.DataType == typeof(System.Int32) ||
  34.                                 c.DataType == typeof(System.Int64) ||
  35.                                 c.DataType == typeof(System.Double) ||
  36.                                 c.DataType == typeof(System.Decimal))
  37.                             {
  38.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + _dt.Rows[i][c.ColumnName].ToString();
  39.                             }
  40.  
  41.                             if (IsType(c.DataType, "System.Nullable`1[System.DateTime]") ||
  42.                                c.DataType == typeof(System.DateTime))
  43.                             {
  44.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + "DateTime('" + _dt.Rows[i][c.ColumnName].ToString() + "')";
  45.                             }
  46.                             if (IsType(c.DataType, "System.String") || c.DataType == typeof(System.String))
  47.                             {
  48.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + "'" + _dt.Rows[i][c.ColumnName].ToString() + "'";
  49.                             }
  50.                         }
  51.                     }
  52.                     if (!string.IsNullOrEmpty(Names) && !string.IsNullOrEmpty(values))
  53.                     {
  54.                         sqlstring = string.Format(sqlString, Names, values);
  55.                         _List.Add(sqlstring);
  56.                     }
  57.                 }
  58.                 dbhelper.ExecuteSqlTran(_List);
  59.             }
  60.             catch (Exception ex)
  61.             {
  62.                 throw ex;
  63.             }
  64.             finally
  65.             {
  66.                 _List = null;
  67.             }
  68.         }
  69.         #endregion
  70.  
  71.         #region 比较两个datatable,值不一样的相应的修改下载处理
  72.         public void CompareToDataTable(DataTable SourTable, DataTable TargetTable, string TableName)
  73.         {
  74.             string SelectString = string.Empty;
  75.             List<string> _list = new List<string>();
  76.             DataTable dtInsert = null;
  77.             DataTable drUpdate = null;
  78.             try
  79.             {
  80.                 dtInsert = SourTable.Clone();
  81.                 drUpdate = SourTable.Clone();
  82.                 foreach (DataRow dr in SourTable.Rows)
  83.                 {
  84.                     if (TableName == "t_sellworker")
  85.                     {
  86.                         SelectString = "serverpartcode='" + dr["serverpartcode"].ToString() + "' and sellworkercode='" + dr["sellworkercode"].ToString() + "'";
  87.                     }
  88.                     else if (TableName == "t_salespromote")
  89.                     {
  90.                         SelectString = "salespromote_id=" + dr["salespromote_id"].ToString() + "";
  91.                     //    SelectString = "salespromote_startdate='" + dr["salespromote_startdate"].ToString() + "' and salespromote_enddate='" + dr["salespromote_enddate"].ToString() + "' " +
  92.                     //    " and salespromote_type='" + dr["salespromote_type"].ToString() + "' and salespromote_name='" + dr["salespromote_name"].ToString() + "' and commodity_code='" + dr["commodity_code"].ToString() + "'";
  93.                     }
  94.                     else if (TableName == "t_commodityex")
  95.                     {
  96.                         SelectString = "commodity_code='" + dr["commodity_code"].ToString() + "' and commodity_barcode='" + dr["commodity_barcode"].ToString() + "' "; // and serverpartshop_id=" + dr["serverpartshop_id"].ToString() + "
  97.                     }
  98.                     DataRow[] dr2 = TargetTable.Select(SelectString);
  99.                     if (dr2 != null && dr2.Length > )
  100.                     {
  101.                         bool flag = false;
  102.                         foreach (DataRow dr3 in dr2)
  103.                         {
  104.                             foreach (DataColumn c in SourTable.Columns)
  105.                             {
  106.                                 if (dr3[c.ColumnName] != null && dr[c.ColumnName] != null && dr3[c.ColumnName].ToString() != dr[c.ColumnName].ToString())
  107.                                 {
  108.                                     flag = true;
  109.                                     break;
  110.                                 }
  111.                             }
  112.                         }
  113.                         if (flag)
  114.                         {
  115.                             drUpdate.Rows.Add(dr.ItemArray);
  116.                         }
  117.                     }
  118.                     else
  119.                     {
  120.                         dtInsert.Rows.Add(dr.ItemArray);  //添加数据行
  121.                     }
  122.                 }
  123.  
  124.                 if (drUpdate != null && drUpdate.Rows.Count > )
  125.                 {
  126.                     if(TableName=="t_sellworker")
  127.                     {
  128.                           UpdateData(drUpdate, "t_sellworker", new string[] { "serverpartcode", "sellworkercode" }, TargetDb);
  129.                     }
  130.                     else if (TableName == "t_salespromote")
  131.                     {
  132.                         UpdateData(drUpdate, "t_salespromote", new string[] { "salespromote_startdate", "salespromote_enddate", "salespromote_type", "salespromote_name", "commodity_code"}, TargetDb);
  133.                     }
  134.                     else if (TableName == "t_commodityex")
  135.                     {
  136.                         UpdateData(drUpdate, "t_commodityex", new string[] { "serverpartcode", "commodity_barcode", "serverpartshop_id" }, TargetDb);
  137.                     }
  138.                     MessageBox.Show("更新成功！");
  139.                 }
  140.                 if (dtInsert != null && dtInsert.Rows.Count > )
  141.                 {
  142.                     DownDataInsert(dtInsert, TableName, TargetDb);//插入
  143.                     MessageBox.Show("下载成功！");
  144.                 }
  145.  
  146.             }
  147.             catch (Exception ex)
  148.             {
  149.                 MessageBox.Show(ex.Message);
  150.             }
  151.             finally
  152.             {
  153.                 dtInsert = null;
  154.                 drUpdate = null;
  155.             }
  156.         }
  157.         #endregion 
  158.  
  159.         #region 下载时重构update语句(处理数据空的情况)
  160.         public void UpdateData(DataTable table, string TableName, string[] keys,DBHelper  dbhelper)
  161.         {
  162.             List<string> _List = null;
  163.             Dictionary<string, string> keyList = null;
  164.             try
  165.             {
  166.                 if (_List == null)
  167.                 {
  168.                     _List = new List<string>();
  169.                 }
  170.                 else
  171.                 {
  172.                     _List.Clear();
  173.                 }
  174.  
  175.                 if (table == null)
  176.                 {
  177.                     throw new Exception("行不可为空！");
  178.                 }
  179.                 if (string.IsNullOrEmpty(TableName))
  180.                 {
  181.                     throw new Exception("表名不可为空！");
  182.                 }
  183.                 for (int i = ; i < table.Rows.Count; i++)
  184.                 {
  185.                     if (keyList == null)
  186.                     {
  187.                         keyList = new Dictionary<string, string>();
  188.                     }
  189.                     else
  190.                     {
  191.                         keyList.Clear();
  192.                     }
  193.                     string sqlstring = string.Empty;
  194.                     string sqlString = "Update " + TableName + " set {0} where {1}";
  195.                     string values = string.Empty;
  196.                     foreach (DataColumn c in table.Columns)
  197.                     {
  198.                         if (table.Rows[i][c.ColumnName] != null && !string.IsNullOrEmpty(table.Rows[i][c.ColumnName].ToString()))
  199.                         {
  200.                             if (IsType(c.DataType, "System.Nullable`1[System.Int16]") ||
  201.                                 IsType(c.DataType, "System.Nullable`1[System.Int32]") ||
  202.                                 IsType(c.DataType, "System.Nullable`1[System.Int64]") ||
  203.                                 IsType(c.DataType, "System.Nullable`1[System.Double]") ||
  204.                                 IsType(c.DataType, "System.Nullable`1[System.Decimal]") ||
  205.                                c.DataType == typeof(System.Int16) ||
  206.                                c.DataType == typeof(System.Int32) ||
  207.                                 c.DataType == typeof(System.Int64) ||
  208.                                 c.DataType == typeof(System.Double) ||
  209.                                 c.DataType == typeof(System.Decimal))
  210.                             {
  211.                                 values += ((string.IsNullOrEmpty(values) ? "" : ",") + c.ColumnName + "=" + table.Rows[i][c.ColumnName].ToString());
  212.                                 if (keys.Contains(c.ColumnName.ToUpper()) || keys.Contains(c.ColumnName.ToLower()))
  213.                                 {
  214.                                     keyList.Add(c.ColumnName, table.Rows[i][c.ColumnName].ToString());
  215.                                 }
  216.                             }
  217.  
  218.                             if (IsType(c.DataType, "System.Nullable`1[System.DateTime]") ||
  219.                                c.DataType == typeof(System.DateTime))
  220.                             {
  221.                                 values += ((string.IsNullOrEmpty(values) ? "" : ",") + c.ColumnName + "=" + "DateTime('" + table.Rows[i][c.ColumnName].ToString() + "')");
  222.                                 if (keys.Contains(c.ColumnName.ToUpper()) || keys.Contains(c.ColumnName.ToLower()))
  223.                                 {
  224.                                     keyList.Add(c.ColumnName, "DateTime('" + table.Rows[i][c.ColumnName].ToString() + "')");
  225.                                 }
  226.                             }
  227.                             if (IsType(c.DataType, "System.String") || c.DataType == typeof(System.String))
  228.                             {
  229.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + c.ColumnName + "=" + "'" + table.Rows[i][c.ColumnName].ToString() + "'";
  230.                                 if (keys.Contains(c.ColumnName.ToUpper()) || keys.Contains(c.ColumnName.ToLower()))
  231.                                 {
  232.                                     keyList.Add(c.ColumnName, "'" + table.Rows[i][c.ColumnName].ToString() + "'");
  233.                                 }
  234.                             }
  235.                         }
  236.                     }
  237.                     if (!string.IsNullOrEmpty(values) && keyList != null && keyList.Count == keys.Length)
  238.                     {
  239.                         string strKeys = string.Empty;
  240.                         foreach (KeyValuePair<string, string> kvp in keyList)
  241.                         {
  242.                             strKeys += ((string.IsNullOrEmpty(strKeys) ? "" : " AND ") + kvp.Key + " = " + kvp.Value);
  243.                         }
  244.  
  245.                         if (!string.IsNullOrEmpty(strKeys))
  246.                         {
  247.                             sqlstring = string.Format(sqlString, values, strKeys);
  248.                             _List.Add(sqlstring);
  249.                         }
  250.  
  251.                     }
  252.                 }
  253.                 dbhelper.ExecuteSqlTran(_List);
  254.             }
  255.             catch (Exception ex)
  256.             {
  257.                 throw ex;
  258.             }
  259.             finally
  260.             {
  261.                 _List = null;
  262.                 keyList = null;
  263.             }
  264.         }
  265.         #endregion
  266.         #region 上传时重构目标数据表insert（数据中带null的处理）
  267.         public void InsertTableData(DataTable dt, string TableName, DBHelper dbhelper)
  268.         {
  269.             try
  270.             {
  271.                 List<string> _List = new List<string>();
  272.                 if (dt == null)
  273.                 {
  274.                     throw new Exception("datatable不可为空！");
  275.                 }
  276.                 if (string.IsNullOrEmpty(TableName))
  277.                 {
  278.                     throw new Exception("表名不可为空！");
  279.                 }
  280.  
  281.                 for (int i = ; i < dt.Rows.Count; i++)
  282.                 {
  283.                     string sqlstring = string.Empty;
  284.                     string sqlString = "insert into " + TableName + " ({0}) VALUES ({1})";
  285.                     string Names = string.Empty;
  286.                     string values = string.Empty;
  287.                     foreach (DataColumn c in dt.Columns)
  288.                     {
  289.                         if (dt.Rows[i][c.ColumnName] != null && !string.IsNullOrEmpty(dt.Rows[i][c.ColumnName].ToString()))
  290.                         {
  291.                             Names += (string.IsNullOrEmpty(Names) ? "" : ",") + c.ColumnName;
  292.                             if (IsType(c.DataType, "System.Nullable`1[System.Int16]") ||
  293.                                 IsType(c.DataType, "System.Nullable`1[System.Int32]") ||
  294.                                 IsType(c.DataType, "System.Nullable`1[System.Int64]") ||
  295.                                 IsType(c.DataType, "System.Nullable`1[System.Double]") ||
  296.                                 IsType(c.DataType, "System.Nullable`1[System.Decimal]") ||
  297.                                c.DataType == typeof(System.Int16) ||
  298.                                c.DataType == typeof(System.Int32) ||
  299.                                 c.DataType == typeof(System.Int64) ||
  300.                                 c.DataType == typeof(System.Double) ||
  301.                                 c.DataType == typeof(System.Decimal))
  302.                             {
  303.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + dt.Rows[i][c.ColumnName].ToString();
  304.                             }
  305.  
  306.                             if (IsType(c.DataType, "System.Nullable`1[System.DateTime]") ||
  307.                                c.DataType == typeof(System.DateTime))
  308.                             {
  309.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + "DateTime('" + dt.Rows[i][c.ColumnName].ToString() + "')";
  310.                             }
  311.                             if (IsType(c.DataType, "System.String") || c.DataType == typeof(System.String))
  312.                             {
  313.                                 values += (string.IsNullOrEmpty(values) ? "" : ",") + "'" + dt.Rows[i][c.ColumnName].ToString() + "'";
  314.                             }
  315.                         }
  316.                     }
  317.                     if (!string.IsNullOrEmpty(Names) && !string.IsNullOrEmpty(values))
  318.                     {
  319.                         sqlstring = string.Format(sqlString, Names, values);
  320.                         _List.Add(sqlstring);
  321.                     }
  322.                 }
  323.                 dbhelper.ExecuteSqlTran(_List);
  324.             }
  325.             catch (Exception ex)
  326.             {
  327.                 throw ex;
  328.             }
  329.         }
  330.         #endregion
  1.  DBHelper SourceDb = new DBHelper("192.168.11.197", "pos1101", "dba", "sql");//源数据库
  2.         DBHelper TargetDb = new DBHelper("127.0.0.1", "pos012", "dba", "sql"); //目标
  1. public class DBHelper
  2.     {
  3.         #region 构造函数
  4.         public DBHelper(string ConnStr)
  5.         {
  6.             connstring = ConnStr;
  7.         }
  8.  
  9.         public DBHelper(string Host, string Server, string UserId, string Password)
  10.         {
  11.             connstring = "host=" + Host + ";server=" + Server + ";userid=" + UserId + ";password=" + Password + ";";
  12.         }
  13.  
  14.         public DBHelper()
  15.         {
  16.  
  17.         }
  18.         #endregion  
  19.  
  20.         #region 属性信息
  21.         private string connstring = null;
  22.         public string ConnStr
  23.         {
  24.             set
  25.             {
  26.                 connstring = value;
  27.             }
  28.             get
  29.             {
  30.                 return connstring;
  31.             }
  32.         }
  33.         #endregion 
  34.  
  35.         public  DataSet QueryOdbc(string SqlString)
  36.         {
  37.             using (SAConnection conn = new SAConnection(connstring))
  38.             {
  39.                 SACommand cmd = new SACommand(SqlString, conn);
  40.                 try
  41.                 {
  42.                     conn.Open();
  43.                     SADataAdapter adp = new SADataAdapter(cmd);
  44.                     DataSet ds = new DataSet();
  45.                     adp.Fill(ds);
  46.                     conn.Close();
  47.                     return ds;
  48.                 }
  49.                 catch (Exception ex)
  50.                 {
  51.                     throw new Exception(ex.Message);
  52.                 }
  53.             }
  54.         }
  55.  
  56.         /// <summary>
  57.         /// 保存数据
  58.         /// </summary>
  59.         /// <param name="SQLStringList"></param>
  60.         public  void ExecuteSqlTran(List<string> SQLStringList)
  61.         {
  62.             using (SAConnection conn = new SAConnection(connstring))
  63.             {
  64.                 conn.Open();
  65.                 SACommand cmd = new SACommand
  66.                 {
  67.                     Connection = conn
  68.                 };
  69.                 SATransaction tx = conn.BeginTransaction();
  70.                 cmd.Transaction = tx;
  71.                 try
  72.                 {
  73.                     for (int i = ; i < SQLStringList.Count; i++)
  74.                     {
  75.                         string strsql = SQLStringList[i].ToString();
  76.                         if (strsql.Trim().Length > )
  77.                         {
  78.                             cmd.CommandText = strsql;
  79.                             cmd.ExecuteNonQuery();
  80.                         }
  81.                     }
  82.                     tx.Commit();
  83.                 }
  84.                 catch (Exception ex)
  85.                 {
  86.                     tx.Rollback();
  87.                     throw new Exception(ex.Message);
  88.                 }
  89.                 finally
  90.                 {
  91.                     conn.Close();
  92.                 }
  93.             }
  94.         }
  95.  
  96.         /// <summary>
  97.         /// 保存数据
  98.         /// </summary>
  99.         /// <param name="SQLStringList"></param>
  100.         public  void ExecuteSqlTran(string SQLString)
  101.         {
  102.             using (SAConnection conn = new SAConnection(connstring))
  103.             {
  104.                 conn.Open();
  105.                 SACommand cmd = new SACommand
  106.                 {
  107.                     Connection = conn
  108.                 };
  109.                 SATransaction tx = conn.BeginTransaction();
  110.                 cmd.Transaction = tx;
  111.                 try
  112.                 {
  113.                     if (SQLString.Trim().Length > )
  114.                     {
  115.                         cmd.CommandText = SQLString;
  116.                         cmd.ExecuteNonQuery();
  117.                     }
  118.                     tx.Commit();
  119.                 }
  120.                 catch (Exception E)
  121.                 {
  122.                     tx.Rollback();
  123.                     throw new Exception(E.Message);
  124.                 }
  125.                 finally
  126.                 {
  127.                     conn.Close();
  128.                 }
  129.             }
  130.         } 
  131.  
  132.         /// <summary>
  133.         /// 获取最大主键ID
  134.         /// </summary>
  135.         /// <param name="SqlString"></param>
  136.         /// <returns></returns>
  137.         public   int OdbcGetMaxPKID(string SqlString)
  138.         {
  139.             using (SAConnection conn = new SAConnection(connstring))
  140.             {
  141.                 SACommand cmd = new SACommand(SqlString, conn);
  142.                 try
  143.                 {
  144.                     conn.Open();
  145.                     int max_id = cmd.ExecuteScalar().ToString().Equals("") ?  : int.Parse(cmd.ExecuteScalar().ToString());
  146.                     conn.Close();
  147.                     return max_id;
  148.                 }
  149.                 catch (Exception ex)
  150.                 {
  151.                     throw new Exception(ex.Message);
  152.                 }
  153.             }
  154.         }
  155.  
  156.         ///// <summary>
  157.         ///// 测试连接
  158.         ///// </summary>
  159.         //public static void TestConn()
  160.         //{
  161.         //    using (SAConnection Conn = new SAConnection(connstring))
  162.         //    {
  163.         //        Conn.Open();
  164.         //        SACommand cmd = new SACommand();
  165.         //        cmd.Connection = Conn;
  166.         //        Conn.Close();
  167.         //    }
  168.         //}
  169.     }

dbhelper类

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