Creating a Filtering User Interface With jQuery In a Web Forms Application: Part 1 looked at
how to use jQuery in an ASP.NET Web Forms application to build a collapsible filtering user interface. When the page is loaded into the user's browser the filtering
interface is collapsed. Clicking the filtering interface's title toggles the interface between its collapsed and expanded states. When expanded, a user can interact
with the filtering controls - DropDownLists, TextBoxes, CheckBoxes, and so on - to narrow down the results displayed in the report beneath the filtering interface.



While the filtering interface created in Part 1 certainly works, the collapsed/expanded state of the interface is not remembered. Consequently, on any postback or anytime
a user leaves the page and comes back, the filtering interface returns to its collapsed state, regardless of whether the user had it expanded. The good news is that with
a touch of AJAX we can have the collapsed/expanded state of the filtering user interface remembered for the duration of a user's session. This article explores how to add
such functionality. Read on to learn more!


If you've not yet read Part 1, please do so before tackling Part 2.
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Source: http://www.4guysfromrolla.com/articles/101409-1.aspx