how to populate a select box which is dependent on another select box

hi,
i need to populate a select box with values from database. but this should be done based on the value selected in the other select box.

for example,
selectbox1 contains options like:
hardware
software

if hardware is selected, selectbox2 must have the following options(got from the database)
PC
UPS
PRINTERS

could you tell me how to implements it by using action, actionform and jsp

help me regarding this.
cheungyipyanAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

KuldeepchaturvediCommented:
Well here is what you will have to do....
First show the form with first select box shown...

<SELECT NAME="SELECTFIELD"  onblur=" submitthis();">
<OPTION VALUE="Hardware">Hardware</OPTION>
<OPTION VALUE="Software">Software</OPTION></SELECT>

<SELECT name="other>
<%
qry=select value from table2 where key=request.getParameter("SELECTFIELD");
rs=stmt.executeQuery(qry);
while (rs.next())
{%>
<OPTION value=<%=rs.getString(1) ><%=rs.getString(1)%.</OPTION>
<%}%>



and submitthis() function will just submit the form back to jsp....
Ofcourse you will have to put some if conditions here and there to control the execution of this query only after submission of the page.. But I am just trying to give a outline here.
Hope this helps


0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
kennethxuCommented:
0
cheungyipyanAuthor Commented:
Thank for reply!!
but i need a sample that implements by using Struts
0
Cloud Class® Course: Ruby Fundamentals

This course will introduce you to Ruby, as well as teach you about classes, methods, variables, data structures, loops, enumerable methods, and finishing touches.

u9707118Commented:
Check out 'Dependent Drop Down Combo Box Lists' on page 7

http://stealthis.athensgroup.com/presentations/Model_Layer_Framework/Struts_Whitepaper.pdf

Hope this helps,

Damian
0
cheungyipyanAuthor Commented:
Thank you for all replies
However, i really want to know how to write the codes of JSP, Action and ActionForm to achieve my goal.

Please help me......................
0
kennethxuCommented:
It's difficult for us to teach you how to use structs in a forum thread, it's just too much.
I think you much pick up struts yourself, then it is trivial task to translate the given sample to struts with your particular needs.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
JSP

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.