I know that i can use the VaryByParam attribute, but what it does is not exactly what i am aiming for.
What happens is that different versions of the page are cached based on the query string.
For example Page.aspx?ID=Tom has its own cached version and ID=Arnold has another. Now what i want to do is not to cache Arnold at all. I only want to cache the page when the query string is Tom.
Is it correct to implement my caching object like this in my controller :
[code]....
And I Use it like this :
[code]....
I have a problem with a simple error notification when I delete a specific product.
I have one page products.aspx
I have 2 categories
- Mobile (cat 1)
- Net (cat 2)
When i delete a specific product from a specific category I have a notification coming up "your product has been deleted..." and then after 2 sec, I want the current page to refresh, so the new and correct number of products is shown. My problem is, that I am requesting querystring "deleteid", while deleting the product, and then my querystring with "categoryid" is, of course, 0. All in all i need "products.aspx?categoryid=2" to refresh, but categoryid is ofc 0, when requesting "deleteid".
[code]....
I have a menu on my masterpage / defaultpage where I'm listing x categories. I would like to make a count of how many products there are in each category.
EX:
[Code]....
Obiously i need the specific categoryid, but how to I request that without having querystrings running since it is on the default page.
We have a wfc layer that wraps the business classes and database access and use a client that lives on the database layer. Amongst our group we are attempting to form standards. Some want to have the client call the web method and pass the page they are requesting and the page size. Pass that to the database and then page in SQL Server use RowNum.Some want to cache the full list of objects in http cache on the service tier and page in memory. They concern here is memory use on the server.
Which would be best for a medium number of users with potentially large number of records to manage (say 30K) Is it better to cache them all in memory and work from there or page at the database as the application scales?
I need to enable caching in my asp.net application, but I do not want to use the webserver's memory for holding cache objects. If I add the page directive for output caching will the page be stored in the asp.net cache object?
View 2 Repliesi have two web pages, i have 6 text box in first page and a gridview in second page, i want when a user fill one or two or....all of these text box, the data pass to second web page through the Querystring and the grid view in second page fill, i wrote a store procedure and configured my grid view correctly but it does not work , i think i have a problem in my first page behind code.
this is my code:
[Code]....
I'd like to pass data from one asp.net page to another. I've seen that using System.Web.Caching.Cache is a good way to accomplish this. I'm wondering if it's a good way to do it and also is there any cleanup or other things I need to keep in mind when you the Cache?
I'm not passing very much, at most two integers.
I have a Web Application where I have one and only one master page and with 100's of diffrent content pages
So to speed up my Web app How can i CACHE the mater oage but not the content page??
Master page loads each time whenever content page is requested..
This thing is possible,I have seen it on many diffrent websites where the Website's Master Page Remains Intact and only the content page changes (best example would be Facebook)
How can i have the same effect in my Web Application?
in my webpage pass values from one page to another page Querystring
in first page there two textboxes both textbox values pass to them ,but sometime only one value select if am entering only
first textbox value it will pass,if am entering only second textbox value it wont pass value the value taken like that
Response.Redirect("~/Admin/VegaFABS.aspx? symbol=" + txtSymbol.Text);
second page
string s2 = Request.QueryString["symbol"];
How can i use querystring for this-
Here in below code i have used querystring for sending imagename from this page to another page. Now i just want that with this imagename in also want to send span element's text with same querystring.How can i achieve this?
[Code]....
What are the "optimal" parameters for creating an AppFabric cache when you will be storing session state in the cache? MSDN Cache-Related Commands
Powershell command line:
New-Cache [-CacheName] <String> [-Eviction <String>] [-Expirable <String>] [-Force [<SwitchParameter>]] [-NotificationsEnabled <String>] [-Secondaries <Int32>] [-TimeToLive <Int64>]
[code]...
Since I don't want my sessions to be removed unless the session has been abandoned either via code or Session Timeout...For eviction, I would think "None" and for expireable, I would think False.I have tested and calling Session.Abandon does remove the object from the cache. I have also tested to see if by extending my session, the session object in cache is also extended. This does seem to work the "correct" way.
We have a data driven ASP.NET website which has been written using the standard pattern for data caching (adapted here from MSDN):
public DataTable GetData()
{
string key = "DataTable";
object item = Cache[key] as DataTable;
[code]...
The trouble with this is that the call to GetDataFromSQL() is expensive and the use of the site is fairly high. So every five minutes, when the cache drops, the site becomes very 'sticky' while a lot of requests are waiting for the new data to be retrieved.
What we really want to happen is for the old data to remain current while new data is periodically reloaded in the background. (The fact that someone might therefore see data that is six minutes old isn't a big issue - the data isn't that time sensitive). This is something that I can write myself, but it would be useful to know if any alternative caching engines (I know names like Velocity, memcache) support this kind of scenario. Or am I missing some obvious trick with the standard ASP.NET data cache?
We are using HttpRuntime.Cache API in an ASP.NET to cache data retrieved from a database.
For this particular application, our database queries feature a LOT of parameters, so our cache keys look something like this:
table=table1;param1=somevalue1;param2=somevalue2;param3=somevalue3;param4=somevalue4;param5=somevalue5;param6=somevalue6... etc...
we have so many parameters that the cache key is several hundred characters long. is there a limit to the length of these cache keys? Internally, it is using a dictionary, so theoretically the lookup time should be constant. However, I wonder if we have potential to run into some performance/memory problem.
I have use Nhibernate in my MVC Project by me known, Nhibernate have cache on Session and Object. now, I want use HttpContext.Current.Cache (system.web) for cache data something in project. my code same that have problem, haven't it. and that's right or wrong.
View 2 RepliesThe following code works well as long as I pass a querystring value to the datalist.
Private Sub BindGrid()
Dim id As Integer = Integer.Parse(Context.Request.QueryString("id"))
Dim strConnString As String = ConfigurationManager.ConnectionStrings("Conn").ConnectionString
Using con As New SqlConnection(strConnString)
Using cmd As New SqlCommand()
cmd.CommandText = "select Id, Name from tblFiles where Id=@Id"
[Code] ......
However, the page errors with the message "Value cannot be null." if I don't pass a value. I know that DataList does not have an EmptyItem Property like a Gridview control. I do not want the page to error if I don't pass a value. Need info to deal with empty values in a datalist.
Most websites have pointed me to this code to use:
<FooterTemplate>
<asp:Label ID="lblEmpty" Text="No Result" runat="server"
Visible='<%#boolean.parse(([b]list[/b].Items.Count=0).ToString())%>'>
</asp:Label>
</FooterTemplate>
The 'list' throws an error. The error is "Too few type arguments to 'System.COllections.Generic.List". I am not sure if the code is written in C# and that is what is causing the error. It seems that it should work but I can not figure out the 'list' error.
I've got a web application that runs of a state server. It looks like soon it may need to distributed and there will be two web servers behind a load balancer.
This works great for session state but my next challenge is Cache
My application leverages heavily of cache. I understand ASP.Net 4.0 will be offering more here but nothing much has been said about the how too.
There are two challenges that I face
1). Each webserver will have its own copy of cache whereas it would be more efficient to put this to a third server the same as session state is put to state server.
2). The real challenge is keeping cache in sync if a simple dataset derived from the database is changed my code dumps that cache item and reloads the cache. That's all well on one webserver but webserver number two wont know to drop that particular cache item and reload it. This could cause some unexpected problems in the application.
For scenario number 2 I could attempt to do some smart coding so server number two knows to dump the cache and reload it.
My guess is someone else has already been here before and there's probably a better implementation approach rather than writing extra code.
Does anyone know how I could achieve the goal of keeping Cache in sync between multiple webservers or even better farm Cache management to another server?
I have two webform ....Default.aspx & Default2.aspx I want In Default.aspx on button click event it passes the whole query string to Default2.aspx textbox ?How to do that uisng vb.net ...if the query string generated from default.aspx on button click event is [URL]
View 1 RepliesLooking for advice on passing variables from page to page without using QueryString. The web crawlers such as google get caught up on the querystrings found in a URL. I'm trying to get away from using it. Is there another suggested method for passing the variables? I've thought about using session variables, but this is just for simply passing the variable from page to page and they won't always be the same.
On another note, I can't do it using forms. I'm using a master page with a form embedded in the master page and also the content pages. Unless microsoft updated it so you can multiple forms on one page.
I want to be able to maintain certain objects between application restarts.
To do that, I want to write specific cached items out to disk in Global.asax Application_End() function and re-load them back on Application_Start().
I currently have a cache helper class, which uses the following method to return the cached value:
return HttpContext.Current.Cache[key];
Problem: during Application_End(), HttpContext.Current is null since there is no web request (it's an automated cleanup procedure) - therefore, I cannot access .Cache[] to retrieve any of the items to save to disk.
Question: how can I access the cache items during Application_End()?
I have the selected DataKey in session from the ListView. I am able to set the selection back when I comeback to this aspx page containing listview. But when the selected item in the listview belongs to some other page (not the first listview page) then I need to also set the selected listview page to the one, where my item belongs. I use a listview and a datapager (with template paging) How can I find, in which page my item to be selected exists?
View 1 RepliesI have a master page with a partial view. I want the partial view to display only when viewing a specific page/action. Is there any conditional I can wrap around the partial view that checks for the page/action I'm viewing?
View 6 RepliesIs there any other way to disable the caching of the page? cause i have a page where in the background image in a DIV that keep on changing for every refresh. the problem is when a post back is trigger the background image wont refresh bec. it is cache in the browser. I've tried using this commands in server side
Response.ExpiresAbsolute = DateTime.Now.AddDays(-1d);
The homepage of an ASP.NET Web site that I am servicing contains a link to an ApplicationsGroupList, listing all of its applications. Clicking this link takes the user to an Application Group page, where specific applications reside under this particular group.
In C#, how can I create the ability for an enduser to link directly to an application group page by passing the Application Group name in the querystring?
what is the best way of passing querystring to another page, i would definitly avoid like using.......
<a href="Page2.aspx?WONumber=12345">
is there any better way?
i was thinking create a Baseclass with few prop and update the baseclass?