How to preserved menu item states

Work on Asp.net vs2008 C#.My project have one master page . My master page contain three parts,Like as bellow picture.Clicking on menu item,page show on part 3,I can do that. But I want clicking on menu ,just update the part 3 not 1 and 2.My present scenario is that ,click on menu item-3 po开发者_高级运维st back whole page and menu control become reset.so after postback i can not get the selected menu item.I want after postback only my master page body update but not the menu control.

If have any query plz ask.

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It sounds like you are coding section 3 in your master page template where you should place a ContentPlaceHolder in section 3 and then create an ASPX page which has your master page specifed in the page directive. You can find more information about how to use master pages and contentplaceholders here.

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It is possible to organize the required layout with the use of the DevExpress ASPxSplitter (with set of SpitterPanes) and ASPxMenu / ASPxNavBars control:

http://demos.devexpress.com/ASPxperienceDemos/Splitter/ContentUrl.aspx

http://demos.devexpress.com/ASPxperienceDemos/Splitter/FullscreenMode.aspx