Maintaining State Across Site In C# .NET
Jul 11, 2010
I have a website that returns search results from Twitter, written in C# ASP.NET. The search works very well.When the user sees the results I want them to also have a 'Next Page' type hyperlink that will perform the search from the last previous result onwards (using Twitter's next_page data). How can I preserve properties so that when a link is clicked it will run the search again with different parameters for the next results? I cannot use Form as there is one Form on the page already and MS limits to one Form per page (for runat="server")
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Feb 25, 2011
i have places a treeview in the master page, if i click on certain node it will navigate to some x.aspx page.here the proble is treview nodes all are collasped.
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Nov 15, 2010
This is probably something fundamental and stupid that I've missed, but the various workarounds are causing me such huge headaches that really, I need to understand the basic problem here in order to find the best solution. I have a usercontrol which contains a drop-down list.
<asp:DropDownList ID="ddlOrderStatus" AutoPostBack="true" runat="server" CssClass="textbox">
<asp:ListItem value="8">Pending</asp:ListItem>
<asp:ListItem value="9">On Hold</asp:ListItem>
<asp:ListItem Value="11">Complete</asp:ListItem>
<asp:ListItem Value="12">Cancelled</asp:ListItem>
</asp:DropDownList>
It does nothing in its Page_Load event. This is in turn contained in a page which, in it's Page_Load event does some databinding on some repeater controls on the page but doesn't touch the control containing the ddl. There is no ajax on the page. The dropdownlist is - clearly - set to autopostback = true. The postback code looks like this:
Private Sub ddlOrderStatus_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlOrderStatus.SelectedIndexChanged
Dim ddl As DropDownList = DirectCast(sender, DropDownList)
Dim currentsorting As String = Request.QueryString("sort")
Dim currentpaging As String = Request.QueryString("page")
Response.Redirect(String.Format("~/admin/orders/Manage/0?sort={0}&page={1}&status={2}", currentsorting, currentpaging, ddl.SelectedValue))
End Sub................................
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Feb 26, 2010
I have a web page that regularly refreshes on post back, and all of this works fine. However, a user has made enhance the page, which I need with:
1) There are 3 asp.panels on the page, which are scrollable vertically. When the page refreshes, the scroll position returns to the top. The enhancement is to maintain the position of where ever the scrollbar is on postback. How do I keep the scrollbar position on post back?
2) Within each of the panels are dynamically added web controls. These web controls contain gridviews, which are themselves contained inside div tags. These div tags can be hiddened and made visible by an image button. This hidden and visible state is actioned by some javascript on the page. Again, the user has asked how it is possible to maintain the state of these div tags on post back, i.e. those that are closed and those that are visible. Currently, the state is on postback for all the div tags to be visible. How do I maintain the state of the visibility of a div tag during postback?
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Nov 10, 2010
Bit confused about this. I was under the impression that if you added server controls to the ItemTemplate of a repeater then the ID's assigned to those controls would persist across postbacks and the state would be maintained. But it doesn't seem to be happening. Here's my ItemTemplate:
[Code]....
Which populates fine. What I'm looking to happen is for the user to be able to select certain items from the repeater using the checkbox and "process" them (i.e. perform some data operations on those items) on clicking a button which is outside the repeater. Here's my button click code:
[Code]....
But if you step through this, the checkboxes are found and assigned correctly but their Checked attribute is always False.
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Aug 17, 2010
How to maintain selected CheckBoxes' states in different pages inside the Repeater control and list out the selected checkboxes values.
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Jan 14, 2011
I have a gridview with results from a database query and columns where I add linkbuttons to individual cells.
something like:
Dim LB2 As New LinkButton
LB2.Text = "title"
LB2.CommandArgument = "argument"
AddHandler LB2.Click, AddressOf LaunchDocument
GridView1.Rows(i).Cells(10).Controls.Add(LB2)
There is a lot time involved in determining what cells get the linkbutton and I want to avoid going through that process on a postback when a user clicks one of the linkbuttons.How can I maintain these controls in the gridview after a user clicks a linkbutton and a postback is done?Right now the application has to go through the process all over again.
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Jul 28, 2010
I have 2 sites, one the main product site the other a secure site featuring the basket and checkout processes.
When a user clicks "add item to basket" I am creating a basket in a database and then adding the items to the basket. The theory was then to store the id from the database for the basket (the basketid) in a cookie, redirect the user to secure site, use the basket id from the cookie and display the contents in the basket.
However I am having trouble getting the secure site to use the same cookie. When I redirect the users to the secure site, the basket appears empty. I need to go back to the main site and then back to secure before the cookie appears.
Here is the code for the cookie
[Code]....
And then on the secure site this is how it gets the basket ID from the cookie
[Code]....
But like I say it's having problems. I've tried replacing the cookies with session variables as well but it didn't work.
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Feb 23, 2011
I had a webform, in which I included the ajax control toolkit. From that, I inserted the tab control on to my webform, having 4 tabs in that tabcontainer. So, I am allowing the end user to enter the information in the first 3 tab panels, and want to display the entered info on the 4 tab panel, which shows all the info entered in the 3 tab panels.
So, how should I manage the information, and display the entered information on the 4th tab panel.. I had some plans of implementing an accordian ajax control for each 3 tabs info, allowing the user to edit at the 4th tab itself..Is this the right idea, or else suggest me, how to display the all the entered info in the 4th tab,like can i use details view, or grid,or suggest something else!!! I added a button to each panel, so that after the user enters the information, he will be redireted to the next tab panel after firing the "Save and continue" button.
AFter the user confirms the data on the 4th tab panel, and presses the submit button, then the entered info has to be entered into the database, for this to happen,. whtat should i do...??Can you plz help me out with some detailed explanation, as I am newbie , need support from you kind of ppl...In the first tab, I had some 4 text boxes, and 3 dropdowns, and a save and continue buttton, and in the next panel, some more text
just give me helping hand, by hinting..
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Mar 12, 2011
Is it possible to cache a hole site?ll its pages, images, js, db data etc...If so is it go/bad idea?
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Jul 28, 2010
I have a site that I am trying to extend how long a session stays open even though the user is inactive. I have this set in my web.config
<sessionState mode="InProc" timeout="720" />
And this is set it IIS
Time-out (in minutes):
720
But it is still timing out after like 15 minutes.
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Dec 21, 2010
asp.net.2 I am trying to update the website but the cache kips on working. How can I relies the cache on site.
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Jan 29, 2011
I need to save how many times (seconds / minutes) each user spend in my site from his enterance to my site till exit it. How can I do this?
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Aug 2, 2010
I´m about to program a common application/website scenario. It contains pages which are presented to users, and some business logic behind, with a database connection class.
My questions are:
Q1: Should the database class be singleton? If so, why? Because does it even matter when every single user is in their own process on the server, and therefore each user has their "own" singleton database instance?
Q2: How would you normally direct users around the site? Would the Default.aspx page create instances of the required classes? And when the user is directed to a new page, how would you normally refer to these instances?
Q3: What kind of general information do you save in the Session variable? Is it a big no-no to save class instances?
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Jul 14, 2010
I need to get the calling page url referrer and host name. I works for me if the calling pages are within the same network. When a page is called from an internal site that are outside of my network, I got the following error:
Object reference not set to an instance of an object.
It failed on this line:
string userURL = Request.UrlReferrer.ToString();
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Jun 17, 2010
I am wondering if it is possible to clear a session variable if the user navigates away from my site.
My example is I have a session storing the logged in user. This is checked for user access to each page.
If the user goes to another site (e.g. google) I want them to relog into the site.
This is to prevent others getting access to a users account if they use the same pc minutes.
I do have a logout that performs this and I know that it is impossible to make users use it! :)
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Apr 2, 2010
l am facing a problem with session.
If many users access the site, the session gets crashed and data which i store to access across pages is getting lost.
a best way to store data (as session does) so that i can use the data across my web application.
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Apr 7, 2010
i am looking for the menu like asp.net site in which state is maintained on click of that link page.as if i am clicking on forums tab its showing forums tab selected.
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Oct 1, 2010
I have 2 sites, one the main product site the other a secure site featuring the basket and checkout processes.
When a user clicks "add item to basket" I am creating a basket in a database and then adding the items to the basket. The theory was then to store the id from the database for the basket (the basketid) in a cookie, redirect the user to secure site, use the basket id from the cookie and display the contents in the basket.
However I am having trouble getting the secure site to use the same cookie. When I redirect the users to the secure site, the basket appears empty. I need to go back to the main site and then back to secure before the cookie appears.
Here is the code for the cookie
[Code]....
And then on the secure site this is how it gets the basket ID from the cookie
[Code]....
But like I say it's having problems. I've tried replacing the cookies with session variables as well but it didn't work.
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Mar 11, 2011
Upon page reloads I want to retain the values the user had typed in upon hitting submit. I worry about viewstates being cumbersome for pages, both in bandwidth and in time for a page viewer to download the page. I am cheap with my bytes :p
My question is instead of using server controls and such I am having the form on the page do a get to itself and on the aspx putting <input type="text" id="user_email" name="email" value="<%=Request.Form["email"] %>" /> This allows me to not use viewstate. Are there any potential shortcomings to doing things this way? My goal is always for a lighter page and efficiency even if it is more work.
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Mar 1, 2011
I'm going to launch a page - that will persist for a really long time using - using ASP.Net.
Page will have very little controls - will using jQuery ajax calls to build up and fill in the DOM for maintaining data in the backend DB.
How do I maintain who I am with the web service?
I'm used to pages that mostly use asp.net membership / session vbl stuff to maintain state.
That's not going to fly with why I'm doing here.
And I guess that also starts into "how do I secure this web service"?
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Feb 19, 2011
I have some problems with maintaining scroll position after postback. First time I experienced the problem was when I (believe) added Combobox control from AJAX control Toolkit and/or UpdatePanel from AJAX Extensions. The problem is when I do the postback on the page the page is loaded at the top and not where I did the postback. Actually, this wouldn't be a problem if it isn't happening on a very large form. I have already tried using MaintainScrollPositionOnPostback="true", but it wasn't helpful at all. I can provide the code if needed, but I don't think it would be of any use because I have comboboxes inside update panels which are rebinded on a button click.
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Mar 25, 2011
I have a gridview which is placed inside div tag to make the grid view to look like having scrollbars
<div id="divgrd" style="overflow: scroll"; width: 350px; height: 150px>
My grid is placed here.
</div>
Now it displays nice view of the grid with scroll bars. I am changing the color of the row selected from the grid. Only problem is if the grid has around 50 rows and I select the 50th row then the scroll bar moves to the top of the grid. I want to stop it and maintain the scroll position. I cannot change the height of the div tag as the grid may be very large if the rows inside is increased.
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Apr 18, 2010
I'm building a payment page in asp.net, however the page where you order your items is run in HTTP (non-secure) on my domain.
When redirecting the user to the payment site, I have to go through a different domain (my payment provider, from whom I borrow the SSL certificate), so my payment url ends up like [URL]
Now the problem is my session is lost, but I store the order in session, so I desperately needs it.
Can I somehow send the SessionID in querystring, and restore the session from it - or do I need to stuff the entire order into querystring ? (Not too certain it'll fit though, it's rather long)
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Jun 19, 2010
I have a page with several dynamically generated DropDownLists. The DDs load and display the correct values on page load. However, when I try to retrieve the values at post back, the DDs all seem to be maintaining the values they had at page load.
All are created in Page_Load;
No test for IsPostBack;
Processing is handled in code below:
[Code]....
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