Oracle database multiple row -> c# -


how retrieve multiple data rows oracle database using c#.net? , disply data rows list-box.

let's brush code:

// extract methods, don't cram in onclick private void feedfriendslistbox() {   string oracledb = @"connection string";    //done: wrap idisposable using   using (oracleconnection conn = new oracleconnection(oracledb)) {     conn.open();      //done: make sql readable - format out , use names parameter(s)     string sql =       @"select name,                 address             friends           age = :prm _age";      //done: wrap idisposable using     using (oraclecommand cmd = new oraclecommand(sql, conn)) {       cmd.parameters.add(new oracleparameter(txtlist.text, oracledbtype.decimal));        //done: wrap idisposable using        using (var reader = cmd.executereader()) {         if (!reader.hasrows) {           listbox1.text = "not found";            messagebox.show("data not found", "not found",                             messageboxbuttons.ok, messageboxicon.information);            return;         }          //done: value 0 based         //done: use formatting (string interpolation), not concatenating         while (reader.read())           listbox1.items.add($"{reader.getvalue(0)} {reader.getvalue(1)}");       }     }   } }

then use extracted method:

private void button2_click(object sender, eventargs e) {   feedfriendslistbox();    }

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