C#連接EXCEL

try
            {
                OleDbConnection myConn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\學習資料\ACCPS2筆試機試\ACCPS2筆試\20070114筆試S2\答案.xls;Extended PropertIEs=Excel 8.0;");
                myConn.Open();
                OleDbDataAdapter thisAdapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", myConn);
                OleDbCommandBuilder thisBuilder = new OleDbCommandBuilder(thisAdapter);
                DataSet thisDataSet = new DataSet();
                thisAdapter.Fill(thisDataSet, "ExcelInfo");
               this.dataGridVIEw1.DataSource=thisDataSet.Tables[0];
                myConn.Close();
            }
            catch (OleDbException ex)
            {
                MessageBox.Show(ex.Message);
            }