ICallBackEventHandler with F5 problem

joseveee

17y5.7k.NET

Hi, currently I'm trying to develop a ASP.NET web page implemented ICallBackEventHandler.

But I have some problems with F5 ....

This is what I did:

1. Get data from database, and display as a table
2. Using dropdownlist as the paging ( onchange call a javascript to get data and render to a table again )
3. Each row have a link to delete ( onclick call a javascript to delete, and then get current page number, get data and render table again)

Everything works just fine, until for example, I get data from table Student, which have 11 rows

I set max rows for 1 page is 5 , so I have 3 page ( inside dropdowlist )

Then I was at page 1, I try delete a row, any row, so I had 10 rows remains ( 2 page)

then I refresh using F5 , then I change to page 2..... this the problem.
After that I can not get any data, until I click on the address bar, and press enter, or start a new page, F5 just won't work.

Appriciate if anyone could help =) Thanks

3 Replies

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Yuuki Nguyen17y ago
Accepted answer
Hi Joseveee

I think it should be the cache problem from FireFox

Try to add this on your page load

            this.Page.Response.AppendHeader("Cache-Control", "no-cache, no-store, must-revalidate, max-age=0, proxy-revalidate, no-transform, pre-check=0, post-check=0, private");
            this.Page.Response.AppendHeader("Pragma", "no-cache");
            this.Page.Response.AppendHeader("Expires", DateTime.Now.ToString("r"));

You might also want to set this for firefox only so use this
         if (Request.Browser.Browser.ToLower() == "gecko")
        {
        ....(the code above)...
       }

Yuuki
joseveee17y ago
Thanks, Its working like charms
joseveee17y ago
UPDATED:

1. The problem only occurs on FireFox, its working fine on IE
2. The problem occurs when there is the increasing or decreasing of the number of pages
    e.g: I have 11 rows, 5 rows will be 1 pages, so i have 3 pages total
           Then I try to delete 1 rows, so I left 10 rows, which will be 2 pages only, so I refresh page using F5, then here it is, the problems
           Same with insert, if I insert some rows which leading to increasing of pages , then f5, and then the problem.