Hi Everyone, I am storing values in a Dictionary variable which has been initialized during PageLoad (inside if(!IsPostbak){}). The dictonary stores values in it whenever ObjectDataSource's Selected Event is fired. Then on every DropdownList's SelectedIndexChange event I want to access the values stored in Dictionary. BUT IT IS SHOWING ME AS "NULL". Why is it so ? How can I retain values in the Dictionary. Thanks in advance. Utsav Acharya Ennovate Technologies, Einfochips, Ahmedabad.

Hi Utsav

Because the page is generated at the server and sent to the browser on every postback the dictionary is created newly on every postback.

What you have to do is to save the dictionary values in ViewState, end reload the dictionary from ViewState after postback. ViewState saves the values localy on the client, so the data is not lost on postback, you just have to reassign the data to the dictionary.

Amit