excel导入datagridview出现地疑难

 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;

        }