C# 從Excel表中匯入資料函數到DataSet

/// <summary>
        /// 讀取Excel表格式資料方法三,返回資料集DataSet
        /// </summary>
        /// <param name="str">所要開啟的檔案地址</param>
        /// <returns></returns>
        private DataSet GetExcelDataSet1(string strExcelFilePath)
        {
            try
            {
                ///建立串連,讀取表格中的資料
                string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =" + strExcelFilePath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1';";///建立串連,地址為str傳遞的地址
                OleDbConnection myConn = new OleDbConnection(strCon);
                string strCom = " SELECT * FROM [Sheet1$A:Q]";///SQL動作陳述式,就是說:取得所有資料從Sheet1
                myConn.Open();
                OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);
                DataSet myDataSet = new DataSet();///建立新的資料集myDataSet
                myCommand.Fill(myDataSet, "[Sheet1$]");///填充資料集
                myConn.Close();
                int columnNum = myDataSet.Tables[0].Columns.Count;///讀取列數並賦值給columnNum
                int rowNum = myDataSet.Tables[0].Rows.Count;///讀取行數並賦值給rowNum
                int resultRowNum = columnNum - 1;
                Console.WriteLine("列數"+columnNum.ToString());
                Console.WriteLine("行數" + rowNum.ToString());
                Console.WriteLine("有效記錄數" + resultRowNum.ToString());               
                ///讀取結果行數(實際上就是去掉第一列編號列的列數,我的程式中將結果顯示橫置了)
                                                
                return myDataSet;
            }
            catch (Exception ex)
            {
                MessageBox.Show("發生錯誤" + ex.Message);
                return null;
            }
        }