Back Button Help

[fungi]

Isn't there a way to keep a page out of the browser's history,
so that it doesn't get reloaded when the user uses the Back button?

I've got a page with a DataGrid making use of Edit/Update/Cancel
so the page keeps being reloaded.
It would be nice for the user to not have to backtrack through all that.

[svatasoiu]

hi,

what I did to avoid this situation:
you must know the layout and the flow of your site.
I added those 2 blocks at the beginning of each page
in the second block the value of PageCurrentID is unique for each page and bust increase as the user go from page to page (you can increase with 100, to leave room for future pages)
the first block may do the work, but does not work for all browsers, but the second take care off all
on some places, if the user need to go to a previous page, you may need to alter manually the Session("PageCurrentID") to a lower value

<%
Response.Expires = -1000 'Make browser not cache pg.
Response.ExpiresAbsolute = Now()-1
Response.CacheControl="no-cache"
%>
<%
dim PageCurrentID
PageCurrentID = 6700 ' protection to not allow the user to use the Back button
if (Session("PageCurrentID") >= PageCurrentID) then
Response.Redirect "rejected.asp"
else
Session("PageCurrentID") = PageCurrentID
end if
%>

[fungi]

Thanks svatasoiu for your fast reply. I'll definitely consider your approach.

I've also come across the Page.SmartNavigation property that seems to apply to my particular situation of all the page reloads.

However, the documentation for SmartNavigation is a little scary and I'll have to test it thoroughly...

Here's a snippet:

Smart navigation is best used with ASP.NET pages that require frequent postbacks but with visual content that does not change dramatically on return. Consider this carefully when deciding whether to set this property to true.