/// <summary>
/// 读取Excel文档
/// </summary>
/// <param name="Path">文件名称</param>
/// <returns>返回一个数据集</returns>
public DatASEt ExcelToDS(string Path)
{
   string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source="+ Path +";"+"Extended Properties=Excel 8.0;";
   OleDbConnection conn = new OleDbConnection(strConn);
   conn.Open();
   string strExcel = "";  
   OleDbDataAdapter myCommand = null;
   DatASEt ds = null;
   strExcel="select * from [sheet1$]";
   myCommand = new OleDbDataAdapter(strExcel, strConn);
   ds = new DatASEt();
   myCommand.Fill(ds,"table1");  
   return ds;
}

/// <summary>
/// 写入Excel文档
/// </summary>
/// <param name="Path">文件名称</param>
public bool SaveFP2toExcel(string Path)
{
   try
   {
    string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source="+ Path +";"+"Extended Properties=Excel 8.0;";
    OleDbConnection conn = new OleDbConnection(strConn);
    conn.Open();
    System.Data.OleDb.OleDbCommand cmd=new OleDbCommand ();
    cmd.Connection =conn;
    //cmd.CommandText ="UPDATE [sheet1$] SET 姓名='2005-01-01' WHERE 工号='日期'"