MVC :: OutputCache'ing With Multiple Languages?
Mar 8, 2010
I'm looking into using the OutputCache-attribute for my ASP.NET MVC website. However, my website is using resources (*.res-files) to display two different languages (based on the user's settings in a cookie and/or database setting). Is there any way I can cache actions for my two languages separately?
Setting a "VaryByHeader" isn't gonna cut it since I have lots of visitors so every second visitor has probably another language set than the visitor before him. This would cause the cached action/page to always be updated since it's a different language.
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Similar Messages:
Jan 18, 2010
We are developing products that will be used in the following way:
Various shared libraries which may be used by multiple products. I anticipate these libraries will mostly need to access string resources that contain error messages/exceptions. Various end-user based applications, designed to run as standalone apps on a PC. They will be required to support multiple languages upon deployment/installation.
Various web-sites which may be required to support multiple languages either at deployment time or possibly at runtime (i.e. minimal or zero downtime). Potentially the site might need to support multiple languages at the same time if being accessed globally.
We may be required to allow customers access to our language files for editing themselves. We would not wish to allow them access to our source code (other than the resource files/dlls) in order to achieve this. We might need to incorporate a facility to log exceptions in our native language (English in this case) and display them in the translated language. This will us debug our customers solutions in the field.
I am already aware of products like RCWinTrans and handling multiple languages in VC++/MFC applications. However, the requirements we are faced with here are more extensive and thus require us to make a few up front decisions that could be difficult to change long term, so ideally we want to make the best choice now. Based on my own knowledge, I have a few questions although I may be missing some tricks with .net that will be happily received. Here are my questions:
What would be best? Put all our resources in a seperate DLL per VS solution OR put the resources in each VS project. The way I see it per solution is easier to manage, modify, and allow customer access. The per project solution seems cleaner though and makes the individual projects more portable. This method would apply to our shared library based solutions as well as our end-application based solutions.
Is it possible to have two seperate resource files loaded at once i.e. if we want to log the exceptions in English but supply them back up the food chain (as a message in an exception) in the translated language? Are there any tricks we can use to automate this like AOP?
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Apr 19, 2010
I am part of a development team building a new ASP.NET 3.5 web application. Two of us are C# coders, and the other is a VB.NET coder.
I know that we can mix languages on a per-project basis, and one can build classes in one language that inherit from classes written in the other language in a different project (which we are already doing), but I can see us getting into a situation where we might well end up with cyclic dependencies between our various project DLLs.
Other than simply having a high number of projects (more seperation of concerns into more libraries), how have you managed this situation on your own projects?
Note - I believe this question to be different enough from the only similar match I could find (this one) on the basis that we are not wanting to use different languages in order to take advantage of their specific features per se, but rather to make use of what developer resource is available to us (i.e. one dev just happens to be VB.NET only).
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Jul 15, 2010
I am working on a web forms application that needs to support multiple languages based on a user's preference. Here are some considerations to keep in mind about the needed solution:
I want to avoid using resource files to store the different text translations because I'd like the ability to change them without having to recompile and deploy the application.
Also the translations ideally need to be adminstratable.
It seems its a considerable amount of effort to add this support to an existing application.
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Sep 21, 2010
I want my web application to support multiple langauges like english,german,etc
Is there a way we can do this in visual studio or is ther any other way
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Dec 3, 2012
i am going to develop search engine portal before enter into home page select the language. i used to display content english or malayalam
so once page is opened popup will be there . user has to select the language then display it in selected language.
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Jan 15, 2010
I am creating a website for an international organization. The initial default page provides a list of languages for the user to select from, but then every page thereafter must be created at runtime with every text field inserted with the selected language. I am using tables in an SQL Server database that provides the translations for every text field on every page. My question is: How do I create a new web page at runtime that is seen by the user in the proper language? I know how to go from one web page to another existing web page. I just do not know how to transfer execution to a new web page.
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Jul 9, 2010
Currently my ASP.Net MVC website uses forms authentication is set up like this my web.config:
<authentication mode="Forms">
<forms loginUrl="en/User/Signin" timeout="2880" />
</authentication>
We have some routing rules that use the prefix /en/ in the url as a identifier for the language, but the problem is that if someone is visiting our french site [URL], they are redirect to [URL], which in turn sets the culture to english. So after logging in, users may need to change there language back to french.
So if the website need to suppurt more languages, so I need to do something like this in the web config:
[code]....
I know you can not have code in the web.config, but this is just to illustrate what I am trying to achieve. Could anyone provide a simple solution, or links to solutions they may already use?
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May 10, 2010
I am not sure where to put this question... but, we have a SQL Server 2005 -> .net 2.?? application that is suppose to be made available to multiple countries and in multiple languages..... can someone give me some direction on how a single datastore can be pulled out and displayed in multiple languages and then those data inputs from multiple languages can be stored in their native language?
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Oct 13, 2010
I have an application that uses resource files to display items in multiple languages. My app uses quote a lot of javascript and the alerts need to display in the local language. To do this, I have created an http handler which will read the keys and values of the culture-specific resource file and write them to a JSON array which is then embedded in the page in a script tag, the messages can then be accesses using, for exmaple:
Message.Error (en-GB = "Error", fr-FR = "Erreur")
The messages http handler works great in development, however when I run the application on a test server, I get the error: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Resources.Alerts.resources" was correctly embedded or linked into assembly "App_GlobalResources.b0n9j90e" at compile time, or that all the satellite assemblies required are loadable and fully signed. The code that I use to acccess the resource file is:
ResourceManager manager = Resources.Alerts.ResourceManager;
ResourceSet resourceSet= Resources.Alerts.ResourceManager.GetResourceSet(Thread.CurrentThread.CurrentCulture, true, true);
Where Resources.Alerts is the type that contains my multi-lingual definitions. The build action for the Alerts.resx file is set to "Embedded Resource". Any ideas why this works locally but not on my test server, am I missing something?
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Oct 5, 2010
<%@ OutputCache Location="None" VaryByParam="None" %>
Because when am using this line in http then the attachment is opening fine but not for https.But after removing this line then https is working fine.
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Mar 31, 2011
I've got a problem using outputcache together with urlrewriting. We've got an application that rewrites url (IE [URL]). Based on the URL (/about/) we figure out which content to show. Now we're trying to add outputcache to that page:
< %@ outputcache duration="600" location="Server" varybyparam="Custom" varybycustom="RawURL" %>
And in the Global.asax we override GetVaryByCustomString like below:
public override string GetVaryByCustomString(HttpContext context, string custom)
{
if (custom == "RawUrl")
{
return context.Request.RawUrl;
}
else
{
return string.Empty;
}
}
However, when we publish the page i'd like to invalidate the cache so that the editors see the change directly. But no matter what I try, I cannot seem to invalidate the cache. If I'd like to invalidate "/about/" I would like to do this: HttpResponse.RemoveOutputCacheItem("/about/"); That doesn't work unfortunately. The only thing that seems to work is: HttpResponse.RemoveOutputCacheItem("/page.aspx");
This clears the cache for all my pages, not just "/about/". Is there any way to invalidate the cache based on the url? Or should we provide a cache key or something per page to be able to invalidate the cache programmatically?
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Jan 29, 2010
I read many posts about outputcaching element in asp .net MVC, but i have one question.My architecture is :1 master page, 1 page (especially news information), and a few other controls like LogOnUser / Fixed status bar etc...I want to have my news cached cause there are three query to entities, but i need too the title for SEO of my master page (title is included in a contentplaceholder in master).I tried to use renderaction outputcache but it is not possible to retrieve the title from the renderaction. Have you any idea about this problem ?Maybe it's preferable to use a general outputcache and use a substitute from dynamic data, but i don't know if it's a best practice or not.
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May 3, 2010
i've got a website that uses OutputCache attribute to cache pages. Works great.
Now, I'm in the middle of R&D'ing scaling up this site to be in a web farm. Along with the usual suspects for webfarm pain ... I've noticed (pretty quickly/obviously) that the OutputCache from Server_A doesn't invalidate the OutputCache from Server_B .. if a try and invalidate a single server's OutputCache. This makes total sense -> how can S_A 'tell' S_B to invalidate when they are physically 2 seperate machines, etc?
So - what are our options?
Velocity? I understand this will move the caching to a different layer .. which means that the final result (output) will always be required to be determined .. as opposed to the OutputCache whic remembers the final output content (yes, varby gives different versions, etc.. which is totally fine). So even though the poco or business objects are all sync'd, there's still that last rendering effort required (even if it's tiny .. compared to the effort to generate/sync business objects).
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Feb 15, 2011
i have CMS that dynamically add user control to page. now i wanna use OutputCache for user control and set it from server side code. how i can do that?
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Jan 11, 2010
I've an action in a controller that returns different content if the request is Ajax or not:
[Code]....
So, from the view I can fill a <div> with the PartialView (RenderPartial), calling the same action (allowing javascript disabled clients). The problem is the cache, because when the request has cached as a normal request, if later sends the request as an Ajax request, the view is rendered very bad.
The question is: Is there any way to use OutputCache to allow to cache in different entries this two types of requests (Ajax and not Ajax).
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Mar 1, 2011
I have a user control with OutputCache set to vary by any param (*). This user control has a LinkButton, which when clicked, causes a postback, and displays a ModalPopupExtender (the extender's TargetControlID is a dummy link). The user control is included on an aspx page.
The LinkButton is displaying the popup just fine. But if I open another browser tab/window/type, the LinkButton fails to generate the popup. I've tried (all separately):
moving the popup extender and its associated control to the main aspx page use OutputCache Location="None" on main page dynamically create the Popup extender and its associated control in Page_Init of both ascx and aspx
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Apr 22, 2010
I have an IHttpHandler that I would like to hook into the OutputCache support so I can offload cached data to the IIS kernel. I know MVC must do this somehow, I found this in OutputCacheAttribute:
public override void OnResultExecuting(ResultExecutingContext filterContext) {
if (filterContext == null) {
throw new ArgumentNullException("filterContext");
}
[Code]....
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Jan 23, 2011
What parameters to use in OutputCache if you want to Cache in case of no params on a page, in other cases not caching?
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May 17, 2010
I am using MVC 2 and am having problems getting the OutputCache to work. My ASP.NET website has Several Views and a View Master Page. On my View Master Page I have a Menu on the left hand side displaying navigation links (implemented using JQuery).
I have implemented the Menu as a PartialView and I call this PartialView from my MasterPage using Html.RenderAction. This all works fine, my controller fetches the data from the database and the PartialView is populated.
The problem is I want to cache the Menu data since it's consistent on all pages. Yet when I add the OutputCache parameter to my Action it has no effect.
** Action **
[Code]....
** Partial View **
[Code]....
** Master Page **
[Code]....
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Feb 4, 2010
I'm using routing from System.Web.Routing without MVC in a standard ASP.Net Web Application Project application. This is mostly done to get neater urls in the portal we are developing (instead of ~/default.aspx?contentid=123 we have ~/{contentsubject}. The portal is not authorized and all info is in the url so in a caching scenario we can cache complete pages.
When I tried to enable output caching I noticed that no caching was done. It seems that the outputcache page directive is completely ignored. Is this true or am I missing something? Can this be fixed?
I made a small test app (I uploaded it to [URL] that just contains a page, Webform1.aspx, that uses a master page and a user control. All three output the current date and time.
When I request http//localhost/OutputcacheTest/Webform1.aspx the 10 second caching works as expected, i.e. the shown time only updates every 10 seconds.
The app also defines a wildcard route that catches all requests and returns the same Webform1.aspx as a handler. So when requesting http//localhost/OutputcacheTest/myroute the same page is executed but now the caching doesn't work, i.e. the current time is shown on every request.
Note: When using the built-in development web server both scenarios work, only IIS seems to have this problem.
Does anyone have a a solution or work around for how to enable output caching in this scenario?
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May 11, 2010
I've got a website that has a number of host headers. Depending on the host header, the results are different - both visually (theme'd) and data.
So lets imagine i have a website called 'Foo' - that returns search results (original, eh?).
Now, the same code runs both sites. It is physically the same server/website (using Host Headers) :-
[URL]
And the data is different for the same search result, based on the host name (ie. us results for [URL] results for [URL]
SO .. if i wish to use OutputCaching .. can this be handled / differ by the host name?
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Jan 13, 2010
I have an ASP.NET application which requires output caching. I need to invalidate the cached items when the data returned from a web service changes, so a simple duration is not good enough.
I have been doing a bit of reading about cache dependencies and think I have the right idea. It looks like I will need to create a cache dependency to my web service.To associate the page output with this dependency I think I should use the following method:
Response.AddCacheItemDependency(cacheKey);
The thing I am struggling with is what I should add to the cache?
The dependency my page has is to a single value returned by the web service. My current thinking is that I should create a Custom Cache Dependency via subclassing CacheDependency, and store the current value in the cache. I can then use Response.AddCacheItemDependency to form the dependency.
I can then periodically check the value and for a NotifyDependencyChange in order to invalidate my cached HTTP response.The problem is, I need to ensure that the cache is flushed immediately, so a periodic check is not good enough. How can I ensure that my dependant object in the cache which represents the value returned by the web service is re-evaluated before the HTTP response is fetched from the cache?
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Apr 2, 2011
I have a master page where in one ContentPlaceHolder I put my shopping cart:
<asp:ContentPlaceHolder ID="continutMeniuContulMeu" runat="server">
asp:UpdatePanel runat="server" ID="updatePanelCos" UpdateMode="Conditional">
<ContentTemplate>
<user:ShoppingCart ID="shoppingCartControl" runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
</asp:ContentPlaceHolder>
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Feb 26, 2010
Is there any way that I can list the pages which are currently stored in the OutputCache?
Just a list of paths would do, but if there's a way to get more information about each item (expiry etc), then all the better.
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