操作Excel的一个有用实例及从EXCEL第N行开始取数据

 private DataSet FindInfoFromExcel(string stFilePath,string tableName,string stFiles,string stPrimaryKey,string stCondition,string stRows,string stBeginRowcount,int flag)
  {
  string strConn = "Provider=Microsoft.Jet.OleDb.4.0;"
  + "data source=" + stFilePath + ";"
  + "Extended Properties=Excel 8.0;";
  String strSql = string.Empty;
  OleDbConnection objConn = new OleDbConnection(strConn);
  objConn.Open();
  if (stRows != "" && flag==1)
  {
  //strSql = "Select top(1) " + stFiles + " From [" + tableName + "] order by " + stPrimaryKey + "";
  strSql = "Select top "+stRows+" * From [" + tableName + "$"+stFiles+"]";
  }
  else if(flag==2 && stBeginRowcount!="")
  {
  strSql = "select top " + stRows + " * from [" + tableName + "$" + stFiles + "] where idx not in (select top " + stBeginRowcount + " idx from [" + tableName + "$]) ";
  }
  else if(flag ==3)
  {
  //strSql = "Select " + stFiles + " From [" + tableName + "] order by " + stPrimaryKey + "";
  //strSql = "Select " + stFiles + " From [" + tableName + "$A:B]";
  strSql = "Select * From [" + tableName + "$" + stFiles + "]";
  }


FindInfoFromExcel（Excel存放路径,Excel要导入的sheet表名,Excel表的列名，数据库表的主健,查询Excel的where条件，读取Excel的行数，从Excel的第几行开始读取,Flag就是灵活的执行下面的查找Excel的方式)

flag=1 为导出第一行 ，flag =2 指定从第几行开始导出 ，flag=3 导出整个Excel表

 

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我测试了下,好像第一行永远都取不到(不管第一行是表头或是表内容[XP+VS2005+excel2003])

用SQL语句取出时,第二行才算第一笔记录
设我的excel是三列(A,B,C)

 //以下为查询第二行开始的,所有记录
 string strExcel ="select * from [sheet1$A1:C65535]";//sheet1为表名

//以下为查询第五行开始的,所有记录
string strExcel ="select * from [sheet1$A4:C65535]";//sheet1为表名

从其它行只需改变AN中的N就可以了

也可以只取一列
select * from [sheet1$B1:B65535]

完整实现:
  string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Server.MapPath("~/yyy.xls") + ";" + "Extended Properties=Excel 8.0;";//HDR=Yes,红色为EXCEL文件
  OleDbConnection conn = new OleDbConnection(strConn);
  conn.Open();  
  string strExcel = "";  
  OleDbDataAdapter myCommand = null;
  DataSet ds = null;
  strExcel = "select * from [sheet1$A3:C65535]"; //EXCEL文件里的表
  myCommand = new OleDbDataAdapter(strExcel, strConn);
  ds = new DataSet();
  myCommand.Fill(ds, "table1");  
  conn.Close();
  return ds;