Hai, Im currently facing a problem to display my data to another page after process a multiple dropdownlist filtering. Can you please show me the way to do so?

 it is something like user search by choosing appropriate category on the dropdownlist, and the result will show by filtering the 2 dropdownlist.

I have a second problem in dropdownlist as well. That is multiple dropdownlist filtering within 2 categories. Let's say I have to filter my data with first category items --  ItemA, ItemB and ItemC. My table will show the data that match with ItemA, ItemB and ItemC. After that, I have to go through filtering with second category item that is ItemD. My same table will show me the data that match with ItemA, ItemB, ItemC and also ItemD.
I hope you can understand my problems.
Thanks!

Dear, friend:

You can put the selected value of the multiple dropdownlists in to session or append it to the URL and retrive them in the second page, and filter the datasource of the GridView in the second page

I hope the above information will be helpful. If you have any issues or concerns, please let me know. It's my pleasure to be of assistance

my gridview data display that filter by the multiple dropdownlist is using "control" parameter source.

i followed your instructions to change it into "session" but unfortunately i get the error "input string was not in correct format".

 if i didnt add any value in "default value" i will get another error which is "value cannot be null"

any possible solutions for this one? please assist me, i really hope that i can get the result.

THANKS regards.:)