Items of Shopping cart (stroed in cache) get removed in wrong time RSS

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  Bahare Feizi

  Member

  30 Points

  39 Posts

  Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 25, 2012 05:34 PM|LINK

  Hi,
  I wrote this code for inserting Items in shopping cart and I expect one day Shopping Cart Items be available.

  if (Cache[username] == null)
              {
                  ShoppingCart cart = new ShoppingCart();
                  Cache.Insert(username, cart, null, DateTime.MaxValue, TimeSpan.FromDays(1));
              }
              if (!Page.IsPostBack)
                  BindGrid();

  but after 30 minutes items get removed.
  and I have this code in login button click event

  if (chk_rememberme.Checked)
              {
                  expiration = DateTime.Now.AddMonths(1);
              }
              else
              {
                  expiration = DateTime.Now.AddMinutes(30);
              }
              FormsAuthenticationTicket AuthTicket = new FormsAuthenticationTicket(1, txt_uname.Text, DateTime.Now, expiration, false, role);

  
  I think expiration=DateTime.Now.AddMInutes(30) in login click event affect FromDays(1).
  am I right?
  if yes what's the relation between them?
  how can I solve it?
  

  
  

  • Edited by Bahare Feizi on Dec 26, 2012 06:55 AM
  • Edited by Bahare Feizi on Dec 26, 2012 06:55 AM
  • Edited by Bahare Feizi on Dec 26, 2012 11:00 AM
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  sameer_khanj...

  Contributor

  7060 Points

  1378 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 26, 2012 04:33 AM|LINK

  I think you can store cart in profile (aspnet DB) To avail for next login or perticular time if user not placed order.

  http://www.codeproject.com/Articles/281602/ASP-NET-Profile-Provider

  Also Please check below link for shopping cart implimentation:

  http://www.asp.net/web-forms/tutorials/aspnet-45/getting-started-with-aspnet-45-web-forms/shopping-cart

  
  sameer.khanjit@gmail.com 
  View Blog
  Click "Mark as Answer" on the post that helped you.
  • Edited by sameer_khanjit on Dec 26, 2012 06:55 AM
  • Edited by sameer_khanjit on Dec 26, 2012 11:01 AM
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  Bahare Feizi

  Member

  30 Points

  39 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 26, 2012 06:55 AM|LINK

  Thanks Sameer

  Yes I Can do it by profile or session or by table.

  but I want to do it by Cache and I'd like to know what's the problem here.

  If I don't find an answer for it mybe I do it by table.

  • Edited by Bahare Feizi on Dec 26, 2012 06:55 AM
  • Edited by Bahare Feizi on Dec 26, 2012 06:55 AM
  • Edited by Bahare Feizi on Dec 26, 2012 11:01 AM
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  sameer_khanj...

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  7060 Points

  1378 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 26, 2012 07:29 AM|LINK

  
  Please read may help you to avoid automatic cache clear

  http://johnsadventures.com/2006/02/15/why_does_my_aspnet_cache_keep_clearing_i/

  
  sameer.khanjit@gmail.com 
  View Blog
  Click "Mark as Answer" on the post that helped you.
  • Edited by sameer_khanjit on Dec 26, 2012 11:01 AM
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  Bahare Feizi

  Member

  30 Points

  39 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 26, 2012 10:46 AM|LINK

  Thanks.

  I will test and let you know if there was any success.

  thanks for all links you put here.

  • Edited by Bahare Feizi on Dec 26, 2012 11:01 AM
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  Bahare Feizi

  Member

  30 Points

  39 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 26, 2012 01:12 PM|LINK

  hi,
  I put this code in web.config
  <caching>
    <cache disableMemoryCollection = "true"
      disableExpiration = "false"
      privateBytesLimit = "0"
      percentagePhysicalMemoryUsedLimit = "90"
      privateBytesPollTime = "00:02:00"/>
  </caching>
  but no success.
  
  and I face another problem that I think it's related to above problem.
  
  I have a cateogry of product when I click on a category I send categoryid via querystring to another page and fetch iformation about that
  
  from database and bind them in repeater
  
  this is first line of code
  
  <asp:Repeater ID="rpt_lookpd" runat="server" EnableViewState="false">
  
  I found product doesn't show in second page but before there wasn't this problem.
  
  when I removed EnableViewState="false" It worked again.
  
  I don't know what's problem.
  
  
  I think it's too hard to discover what's the problem.
  so mybe I keep items in table or session.
  
  thanks.
  
  
  
  

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  PrashanthRed...

  Member

  559 Points

  94 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 26, 2012 08:24 PM|LINK

  Hi Bahare Feizi

  Regarding Cache issue:

  Data stored in the Cache object will be cleared whenever the application is restarted.

  Application will restart in several scenarios. Some of the are as follows...

  1)Whenever Machine.Config, Web.Config, Global.asax files are modified.

  2)After every 15 modifications ( or 15 recompilations ) of aspx, ascx or asax files application will restart. Actually this limit is specified using <compilation numRecompilesBeforeAppRestart= /> setting in machine.config and can be overridden in Web.Config.

  3)Whenever .cs or .vb files in App_Code are updated.

  4)Whenever new assemblies are added or deleted.

  5)Sub-Directories of Application are deleted or renamed.

  6)The CAS policy is modified.

  Please Mark as Answer if my post helps you..!
  
  Thanks,
  Prashanth Reddy
  
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  sameer_khanj...

  Contributor

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  1378 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 27, 2012 04:26 AM|LINK

  I think you should need to make "EnableViewState =true"

  For more information please view :- 

  http://msdn.microsoft.com/en-us/library/system.web.ui.control.enableviewstate.aspx

  http://forums.asp.net/t/1378945.aspx/1

  http://stackoverflow.com/questions/5485850/minimizing-viewstate-confused-by-enableviewstate-and-viewstatemode-in-asp-n

  
  sameer.khanjit@gmail.com 
  View Blog
  Click "Mark as Answer" on the post that helped you.
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  Bahare Feizi

  Member

  30 Points

  39 Posts

  Re: Items of Shopping cart (stroed in cache) get removed in wrong time

  Dec 27, 2012 09:26 AM|LINK

  hi sameer

  Excuse me I didn't think you come to this thread again.

  I saw your answers just now.

  I asked this question in this thread

  http://www.aspforums.net/Threads/120987/Items-of-Shopping-cart-stroed-in-cache-get-removed-in-wrong-time/

  and I asked support group of my host and the answer was

  recycle worker processes 60 minutes

  but shopping cart get empty after 30 minutes not 60.

  and I mistakly marked that answer in that thread as answer.

  I asked the modarator of taht site to open my question again.

  and i will read your answers more carefully.

  if there was any success I let you know.

  • Edited by Bahare Feizi on Dec 27, 2012 09:36 AM
  • Edited by Bahare Feizi on Dec 27, 2012 09:37 AM