c# 读取excels

DataTable ExcelTable;
            DataSet ds = new DataSet();
            //Excel 文件一般都保存为统一的xls的连接  其他的会存在版本问题，可能打不开
            OleDbConnection objConn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + sExcelFile + ";" + "Extended Properties=Excel 8.0;");
            objConn.Open();
            DataTable schemaTable = objConn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null);
            string tableName = schemaTable.Rows[0][2].ToString().Trim();//获取 Excel 的表名，默认值是sheet1
            string strSql = "select * from [" + tableName + "]";
            OleDbCommand objCmd = new OleDbCommand(strSql, objConn);
            OleDbDataAdapter myData = new OleDbDataAdapter(strSql, objConn);
            myData.Fill(ds, tableName);//填充数据