Non computer major, temporary to learn a little bit of fur do a query system,, every brother please give directions!!!!!!

Want to enter the ring number, click the query button, will display the results of a query in the grid control, but the results of a query is not, please help to see where the problem is, be obliged!

This is the form


This is the code command1


This is to run the results

Beg you glad, don't suspicion I, I'm really not to learn the computer

Send the wrong module for the first time, now also don't have a lot of points, I beg, help