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You can use PPR in LOV and set the regions hide or show accordingly.
Check the below link for PPR concepts.
The above link is similar to your requirement except the Poplist and yours is LOV. (In this exercise we will implement the Partial Page Rendering. Depending upon the value in Position Poplist will change the "Render Property" of Manager.)
Hope it helps.
Check the code snippet from Dev Guide:
// Form was submitted because the user selected
// a value from the LOV modal window,
// or because the user tabbed out of the LOV input.
// Find out which LOV input triggered the event.
String lovInputSourceId = pageContext.getParameter(SOURCE_PARAM);
// Find out the result values of the LOV.
Hashtable lovResults =
if (lovResults != null)
// Update the page depending on the value chosen by the user.
It explains what you need.
Yaa thanxx niranj
that gave me a glance through the topic but as i am new to this field
could you brief me on thiss..........
Just let me know what you want exactly or ask your doubts. I hope i have already briefed :)
Give me exact question or coding doubts. I can brief you on that.
yaa practicing that in tutorial cleared the doubt
using PVO is required...
they have given example regarding this DROP DOWN and similar has to be applied on LOV.....'
thanz again for ur time.......