System.NotSupportedException：数据源不支持服务器端数据分页。

This is my code:

这是我的代码:

query = "SELECT DISTINCT TO_CHAR(date,'DD-Mon-YYYY')date, idNum, name FROM customer  ORDER BY date, idNum, name";
        dset = dbCon.ExecuteDataSet(query);
        grdSat.DataSource = query;
        grdSat.DataBind();
query = "SELECT DI