ERROR - No data exists for the row/column, Help Plz

when try execute code, displays error message "no data exists row/column"

my code :

private void combobox6_selectedindexchanged(object sender, eventargs e)
        {
            string connstring = "provider=microsoft.jet.oledb.4.0;data source=d:\\project management application\\database.mdb";

            try
            {
                oledbconnection conncmb = new oledbconnection(connstring);
                conncmb.open();

                string s1 = combobox1.selectedtext.tostring();

                string str1 = "select * data title = '" + s1 + "'";
                oledbcommand cmd1 = new oledbcommand(str1, conncmb);
                oledbdatareader dr1 = cmd1.executereader();
                dr1.read();

                textbox9.text = dr1[1].tostring();


                dr1.close();

                conncmb.close();

            }
            catch (exception ex)
            {
                messagebox.show(ex.message.tostring(), "error", messageboxbuttons.ok, messageboxicon.error);
            }
        }

i have table "data" in database named database.mdb, 2 records present still shows error.

  string str1 = "select * data";

  while(dr1.read())

{
                textbox9.text = dr1[1].tostring();

}

try query ...
if exception not thrown know whats happening .

---

peter koueik

Visual Studio Languages  ,  .NET Framework  >  Visual C#