C#操作Excel匯入匯出

  //匯入Excel，返回一個資料集

  public DataSet InputExcel (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;
  }

  // 匯出Excel文檔
  public bool OutputExcel(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$] SET 姓名='2005-01-01' WHERE 工號='日期'";
    //cmd.ExecuteNonQuery ();
    for(int i=0;i<fp2.Sheets [0].RowCount -1;i++)
    {
     if(fp2.Sheets [0].Cells[i,0].Text!="")
     {
      cmd.CommandText ="INSERT INTO [sheet1$] (工號,姓名,部門,職務,日期,時間) VALUES('"+fp2.Sheets [0].Cells[i,0].Text+ "','"+
       fp2.Sheets [0].Cells[i,1].Text+"','"+fp2.Sheets [0].Cells[i,2].Text+"','"+fp2.Sheets [0].Cells[i,3].Text+
       "','"+fp2.Sheets [0].Cells[i,4].Text+"','"+fp2.Sheets [0].Cells[i,5].Text+"')";
      cmd.ExecuteNonQuery ();
     }
    }
    conn.Close ();
    return true;
   }
   catch(System.Data.OleDb.OleDbException ex)
   {
    System.Diagnostics.Debug.WriteLine ("寫入Excel發生錯誤："+ex.Message );
   }
   return false;
  }