Finding out if any modifications are being made in the fields in an editable datagrid

Question

Hi,
I populated my data grid with an array
collection(initDG=event.result.categorydtls.category) where
initDGObject is the array collection.I made the data grid as
editable.Now , when the user click's on submit(below data grid),
the request for modifying the corresponding details in database
should go only if the user makes any modification ,or else an alert
should be shown saying that "you havent made any modifications".For
this purpose i assigned "event.result.categorydtls.category" to
another array collection initDGObject and ,in the function which
will be invoked after clicking on submit i compared both the
objects initDG and initDGObject.But to my surprise,if any field in
data grid is modified then both initDG and intiDGObject(here let me
remind that i assigned initDG as the data provider for grid and
initDGObject is a normal array collection object for which the
details are assigned to for comparison purpose) are also
modifying.So i am unable to check if any modifications are being
made before forwarding request for database modification to back
end.Please suggest me a solution for doing this task.Thanks in
advance.

Answer 1

lam not able to add a single object to the array
collection.Regarding the usage of datagrid in my task,there will be
a drop down on the top of datagrid with categories(like
science,maths...)in it.Whenever a particular category is selected
then the corresponding subcategories(in category science sub
categories are physics,biology.....)details will be populated in
the datagrid.Please suggest me a solution.