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.

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.

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