arvind shakya
please anyone tell me about smart navigation.
By arvind shakya in ASP.NET on Nov 11 2006
  • bapiraju uddaraju
    Nov, 2006 13

    The SmartNavigation Property

    ASP.NET has a feature called smart navigation that can greatly

    enhance the user experience of a Web page for users of Internet

    Explorer 5.0 or higher browsers. The following list summarizes the

    enhancements provided by smart navigation:

    á Persists element focus between postbacks—When a postback

    occurs, the active control on the Web page loses its focus.

    Anyone using a keyboard for navigation will have to press the

    Tab key several times to return to their original position of

    data entry. However, when smart navigation is enabled, the

    information about the active control is persisted between postbacks

    to the server.

    á Persists scroll position between postbacks—When a postback

    occurs, the browser loses the record of the scroll position

    of the page. This can be especially annoying in the case of

    large data entry forms because after postback, the form will be

    positioned at the beginning and user has to scroll down to

    find her last data entry position. However, when smart navigation

    is enabled, the information about the scroll position persists

    between postbacks to the server.

    á Eliminates page flash caused by page postback—When

    users navigate from one page to another, the old page is

    destroyed and the new one is created on a blank screen.

    Depending on the user’s video card and display setting, this

    operation can cause a small flash to occur. This flash is especially

    noticeable during page postback operations in which the

    visual contents of the page do not change significantly

    between the two page requests. When smart navigation is

    enabled, ASP.NET uses a technique called double buffering to

    eliminate this flash.

    á Prevents each postback from being saved in the browser

    history—Normally, every postback to an ASP.NET page causes

    an entry to be created in the browser’s history. This defeats

    the purpose of the browser’s back button because instead of

    going back to the previous page, users are taken to the previous

    state of the current page. Smart navigation prevents this

    from happening by saving only the latest state of the current

    page in the browser’s history.

    Smart navigation is specified by the SmartNavigation property of the

    Page class. The default value of this property is false, which disables

    smart navigation for the Web form.

    <%@ Page language=”c#”

    Codebehind=”StepByStep3_2.aspx.cs”

    AutoEventWireup=”false”

    Inherits=”_315C03.StepByStep3_2”

    SmartNavigation=”true”

    %> at page level

    you can make the following changes to the web.config file:

    to entire webapplication

     bapiraju (.net developer) 

      worldtech 

     [email protected]

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