[Ajax.AjaxMethod()] public DataSet GetDataSet() { OleDbConnection conn = new OleDbConnection(“Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:工作项目分析 estdb.mdb;Persist Security Info=True;”); DataSet ds = new DataSet(); try { OleDbCommand cmd = conn.CreateCommand(); cmd.CommandText = “select * from t_n