Initialize ResourceManager dynamically - asp.net

I have this function and it works fine to get a translated value from this specific resource file called OkayMessages.
public static string GetResourceString(string resourceKey){
ResourceManager resourceManager = Resources.OkayMessages.ResourceManager;
return resourceManager.GetString(resourceKey);
}
But i have more than 1 resource file and i want this function to get values from those files as well.. Only, i'm having trouble with dynamically/programmatically selecting the right resource(manager).
I have tried to use the code below, and some variants to that, but i always get an error.
public static string GetResourceString(string resourceFile, string resourceKey){
ResourceManager resourceManager = new System.Resources.ResourceManager("Resources." + resourceFile, Assembly.GetExecutingAssembly());
return resourceManager.GetString(resourceKey);
}
The error i got most of the times was: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Resources.OkayMessages.resources" was correctly embedded or linked into assembly..
Update: I'm using the \App_GlobalResources\ folder for my resource files, and it seems that this is the problem. When i place a resource file in the root of my project, i can initialize a ResourceManager without problems.

After searching in the wrong direction for a while, I just found the most simple answer to this problem. It turns out that there is a method called GetGlobalResourceObject.
So in my case I'm now using this line of code which does all:
GetGlobalResourceObject("OkayMessages", "PasswordChanged").ToString();

Read carefully this article and you'll find that you need to specify correct namespace of the resource. That's your problem. Here is working example if OkayResources.resx resides in project root folder:
using System.Reflection;
using System.Resources;
using System.Web.UI;
namespace WebApplication1
{
public partial class _Default : Page
{
public _Default()
{
var result = GetResourceString("OkayResources", "SomeKey");
}
private static string GetResourceString(string resourceFileName, string key)
{
var resourceName = "WebApplication1." + resourceFileName;
var resourceManager = new ResourceManager(resourceName, Assembly.GetExecutingAssembly());
return resourceManager.GetString(key);
}
}
}
If you put your resource file into Resources folder you'll have to update resource namespace:
var resourceName = "WebApplication1.Resources." + resourceFileName;

Related

MEF Error message - VS2010

Can anybody help me with explaining this error message please:
system.componentmodel.composition.changerejectedexception
The composition remains unchanged. The changes were rejected because of the following error(s): The composition produced a single composition error.
The root cause is provided below. Review the CompositionException.Errors property for more detailed information.
1) No exports were found that match the constraint:
ContractName Itok.BusinessLogic.Interfaces.IFolderService
RequiredTypeIdentity Itok.BusinessLogic.Interfaces.IFolderService
Resulting in: Cannot set import 'Itok.Web.Photos.Presenters.DefaultPresenter._folderService (ContractName="Itok.BusinessLogic.Interfaces.IFolderService")' on part 'Itok.Web.Photos.Presenters.DefaultPresenter'.
Element: Itok.Web.Photos.Presenters.DefaultPresenter._folderService (ContractName="Itok.BusinessLogic.Interfaces.IFolderService") --> Itok.Web.Photos.Presenters.DefaultPresenter
Here is the IFolderService.cs:
using System;
using System.Collections.Generic;
using Itok.Entities;
namespace Itok.BusinessLogic.Interfaces
{
public interface IFolderService
{
List<Folder> GetFriendsFolders(Int32 AccountID);
void DeleteFolder(Folder folder);
List<Folder> GetFoldersByAccountID(Int32 AccountID);
Folder GetFolderByID(Int64 FolderID);
Int64 SaveFolder(Folder folder);
}
}
And this is the exporting class definition, FolderService.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Itok.BusinessLogic.Interfaces;
using System.ComponentModel.Composition;
using Itok.DataAccess.Interfaces;
using Itok.Common;
using Itok.DataAccess;
using Itok.Interfaces;
using Itok.Entities;
namespace Itok.BusinessLogic
{
[Export(typeof(IFolderService))]
[Export(typeof(ICache))]
public class FolderService : IFolderService
{
[Import]
private IFriendRepository _friendRepository;
[Import]
private IFolderRepository _folderRepository;
[Import]
private ICache _cacheService;
public FolderService()
{
MEFManager.Compose(this);
}
public List<Folder> GetFriendsFolders(Int32 AccountID)
{
List<Friend> friends = _friendRepository.GetFriendsByAccountID(AccountID);
List<Folder> folders = _folderRepository.GetFriendsFolders(friends);
folders.OrderBy(f => f.CreateDate).Reverse();
return folders;
}
public void DeleteFolder(Folder folder)
{
if (_cacheService.Exists(folder.AccountID.ToString()))
{
_cacheService.Delete(folder.AccountID.ToString());
}
_folderRepository.DeleteFolder(folder);
}
public List<Folder> GetFoldersByAccountID(int AccountID)
{
List<Folder> cachedFolders = _cacheService.Get(AccountID.ToString()) as List<Folder>;
if (cachedFolders != null)
{
return cachedFolders;
}
else
{
cachedFolders = _folderRepository.GetFoldersByAccountID(AccountID);
_cacheService.Set(AccountID.ToString(), cachedFolders);
return cachedFolders;
}
}
public Folder GetFolderByID(Int64 FolderID)
{
return _folderRepository.GetFolderByID(FolderID);
}
public Int64 SaveFolder(Folder folder)
{
return _folderRepository.SaveFolder(folder);
}
}
}
I thank you prior to any help for saving my time.
The error message means that MEF is looking for a class that is exported with the interface IFolderService but there isn't one in the container.
To investigate this, firstly check that there is a class that exports that interface and if there is, then look into whether that class being picked up by the container or not and thirdly, if neither of those resolve the issue, look into whether the class that is exported with the interface IFolderService has some other imports that can't be satisfied.
Finally, I found the Solution for the problem. It has got has nothing to do directly with IFolderService that MEF was pointing to. The App has dependencies on a component (FolderService) in the business logic, which in turn is dependent upon an interface ICache, and an implementation wrapper, Cache.cs. ICache, specified by a contract name Itok.Interfaces.ICache, had been exported FOUR times (on just one Import). This was left unnoticed while I was trying to scale the solution. MEF couldn't tell which Export to use. The real problem is that MEF was pointing to a class two levels upper the chain!
Thanks TomDoesCode for looking at the problem, and I hope this will help others who'll get a similar problem.
A long term solution for this problem would be if you have many Exports that will satisfy an Import, you'll probably have two options:
I) Change the [Import] with [ImportMany]. Then during runtime, decide which import to use for the contract. Ask yourself if just picking up the first available, or using one at a time in random.
II) Use [ImportMany] in conjunction with Metadata in order to decide which Import to use.

"Bool" not found in .NET application running on Mono/XPS

I am incredibly new to .NET and Mono. I have a .NET 4 application that I am trying to run locally, and I'm getting a compilation error when I try to run it (using xps4 on Ubuntu). At the end of the stacktrace it says:
/tmp/jeremy-temp-aspnet-0/3b8f3547/App_Web_635c7158_48.cs(32,21): error CS0246: The type or namespace name `bool' could not be found. Are you missing a using directive or an assembly reference?
Does that mean that it doesn't recognize the boolean type? A Google search wasn't much help.
Update - Here's the code:
public virtual #bool ShowRecentPlans {
get {
return ((#bool)(this.GetPropertyValue("ShowRecentPlans")));
When you prefix an identifier (like a type name) with #, you're telling the compiler that, even though it looks like a reserved word, it refers to something defined in your program.
Unless you have something defined somewhere like
public class #bool
{
...
}
then this isn't going to work.
Try
public virtual bool ShowRecentPlans {
get {
return (bool)(this.GetPropertyValue("ShowRecentPlans"));
}
}
For instance, if you wanted to use the keyword new as an identifier, you could:
int new = 5; /// error!
int #new = 5; /// compiles
# is of course also used to tell the compiler how a string should be interpreted.
// throws an error because \p and \m look like formatting sequences
var path = "c:\pub\myFile.txt";
// compiles
var path = #"c:\pub\myFile.txt";
Also, I just have to ask: what made you use #bool instead of bool to start with?
(And, for the record, using a keyword as an identifier is a very, very bad idea.)
Your return type should be bool instead of #bool.

Adding Wcf Service does not allow namespace access

I have created a wcf service called ServiceIRE. I add a service reference to my project by right clicking on th eproject in solution explorer and clicking add Service Reference. I am able to discover my created service and click ok after specifying the namespace ServiceReference1. All files seem to be generated properly.
I then go to the codebehind and try to add a using statment "using ServiceReference1;". This is unrecognized by the file even though the namespace apparently exists in the same project.
Any help would be greatly appreciated.
ServiceIRE.cs
namespace FakeIREServiceLibrary
{
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class ServiceIRE : IServiceIRE
{
public string GetData()
{
Random rnd = new Random();
var randomNumber = rnd.Next(10);
Random rndID = new Random();
var randomNumberID = rnd.Next(10000);
Thread.Sleep(randomNumber*1000);
return string.Format("Thread # {0} returned in {1} nanoseconds", randomNumberID, rnd.Next());
}
}
IServiceIRE.cs
namespace FakeIREServiceLibrary
{
[ServiceContract]
public interface IServiceIRE
{
[OperationContract]
string GetData();
}
}
Page.aspx.cs
using ServiceReference1; //THIS IS NOT RECOGNIZED
Thank you in advance :)
What's the default namespace for your project?
I believe you have to do something like "using DefaultNamespaceForProject.ServiceReference1;"
You can find the default namespace by right clicking your project.. clicking Properties, and then going to the Application tab.
You can find the namespace of the service client generated by Visual Studio by looking at the Reference.cs file within the Service Reference after you show all files for that project. The default is [Project namespace].[Namespace specified].
It's possible that it did NOT generate the file because of an error. That may be the behavior you're seeing.
I would also encourage you to NOT use Add Service Reference, but to instead use a ChannelFactory or build a reusable service client.

Setting FileIOPermissions in ASP.NET incode

I have this small app that loads plugin type components that other users can freely upload to the server. But I don't want the users to be able to access other users files. I need to set the access of each plugin component to a restricted access.
I tried to set the access inside the plugin classes base class but even then the loaded plugin classes seem to have full file access.
I can't set the permission with a attribute because the path changes depending on who loads the page.
Here is a code snippest:
public abstract class PluginBase<T>
{
public PluginBase
{
PermissionSet ps = new PermissionSet(System.Security.Permissions.PermissionState.None);
ps.AddPermission(new System.Security.Permissions.FileIOPermission(System.Security.Permissions.FileIOPermissionAccess.PathDiscovery | System.Security.Permissions.FileIOPermissionAccess.Read, HttpContext.Current.Server.MapPath("/app_data/www_somesite_com")));
ps.PermitOnly();
}
}
public class SomePlugin : PluginBase<SomePlugin>
{
public SomePlugin
{
File.WriteAllText("c:\test.txt", "This should not be possible, but it is.. why?");
}
}
Many thanks in advance!
The solution is actually quite simple, as you can implement your own attribute (which allows you to resolve the allowed path programmatically instead of having to use a constant for the decorator attribute).
using System.Security;
using System.Security.Permissions;
public sealed class CustomFileIOPermission : CodeAccessSecurityAttribute
{
public CustomFileIOPermission(SecurityAction action)
: base(action)
{
}
public override IPermission CreatePermission()
{
// You can use your `HttpContext` or similar at this point to resolve the path
string allowedPath = #"D:\test";
return new FileIOPermission(FileIOPermissionAccess.Write, allowedPath);
}
}
The class above will enable use of [CustomFileIOPermission(SecurityAction.PermitOnly)] and will effectively protect files elsewhere.

Use ASP.NET Resource strings from within javascript files

How would one get resx resource strings into javascript code stored in a .js file?
If your javascript is in a script block in the markup, you can use this syntax:
<%$Resources:Resource, FieldName %>
and it will parse the resource value in as it renders the page... Unfortunately, that will only be parsed if the javascript appears in the body of the page. In an external .js file referenced in a <script> tag, those server tags obviously never get parsed.
I don't want to have to write a ScriptService to return those resources or anything like that, since they don't change after the page is rendered so it's a waste to have something that active.
One possibility could be to write an ashx handler and point the <script> tags to that, but I'm still not sure how I would read in the .js files and parse any server tags like that before streaming the text to the client. Is there a line of code I can run that will do that task similarly to the ASP.NET parser?
Or does anyone have any other suggestions?
Here is my solution for now. I am sure I will need to make it more versatile in the future... but so far this is good.
using System.Collections;
using System.Linq;
using System.Resources;
using System.Web.Mvc;
using System.Web.Script.Serialization;
public class ResourcesController : Controller
{
private static readonly JavaScriptSerializer Serializer = new JavaScriptSerializer();
public ActionResult GetResourcesJavaScript(string resxFileName)
{
var resourceDictionary = new ResXResourceReader(Server.MapPath("~/App_GlobalResources/" + resxFileName + ".resx"))
.Cast<DictionaryEntry>()
.ToDictionary(entry => entry.Key.ToString(), entry => entry.Value.ToString());
var json = Serializer.Serialize(resourceDictionary);
var javaScript = string.Format("window.Resources = window.Resources || {{}}; window.Resources.{0} = {1};", resxFileName, json);
return JavaScript(javaScript);
}
}
// In the RegisterRoutes method in Global.asax:
routes.MapRoute("Resources", "resources/{resxFileName}.js", new { controller = "Resources", action = "GetResourcesJavaScript" });
So I can do
<script src="/resources/Foo.js"></script>
and then my scripts can reference e.g. window.Resources.Foo.Bar and get a string.
There's no native support for this.
I built a JavaScriptResourceHandler a while ago that can serve Serverside resources into the client page via objects where each property on the object represents a localization resource id and its value. You can check this out and download it from this blog post:
http://www.west-wind.com/Weblog/posts/698097.aspx
I've been using this extensively in a number of apps and it works well. The main win on this is that you can localize your resources in one place (Resx or in my case a custom ResourceProvider using a database) rather than having to have multiple localization schemes.
whereas "Common" is the name of the resource file and Msg1 is the fieldname. This also works for culture changes.
Partial Javascript...:
messages:
{
<%=txtRequiredField.UniqueID %>:{
required: "<%=Resources.Common.Msg1 %>",
maxlength: "Only 50 character allowed in required field."
}
}
In a nutshell, make ASP.NET serve javascript rather than HTML for a specific page. Cleanest if done as a custom IHttpHandler, but in a pinch a page will do, just remember to:
1) Clear out all the ASP.NET stuff and make it look like a JS file.
2) Set the content-type to "text/javascript" in the codebehind.
Once you have a script like this setup, you can then create a client-side copy of your resources that other client-side scripts can reference from your app.
If you have your resources in a separate assembly you can use the ResourceSet instead of the filename. Building on #Domenics great answer:
public class ResourcesController : Controller
{
private static readonly JavaScriptSerializer Serializer = new JavaScriptSerializer();
public ActionResult GetResourcesJavaScript()
{
// This avoids the file path dependency.
ResourceSet resourceSet = MyResource.ResourceManager.GetResourceSet(CultureInfo.CurrentUICulture, true, true);
// Create dictionary.
var resourceDictionary = resourceSet
.Cast<DictionaryEntry>()
.ToDictionary(entry => entry.Key.ToString(), entry => entry.Value.ToString());
var json = Serializer.Serialize(resourceDictionary);
var javaScript = string.Format("window.Resources = window.Resources || {{}}; window.Resources.resources = {1};", json);
return JavaScript(javaScript);
}
}
The downside is that this will not enable more than one resource-file per action. In that way #Domenics answer is more generic and reusable.
You may also consider using OutputCache, since the resource won't change a lot between requests.
[OutputCache(Duration = 3600, Location = OutputCacheLocation.ServerAndClient)]
public ActionResult GetResourcesJavaScript()
{
// Logic here...
}
http://www.asp.net/mvc/overview/older-versions-1/controllers-and-routing/improving-performance-with-output-caching-cs
I usually pass the resource string as a parameter to whatever javascript function I'm calling, that way I can continue to use the expression syntax in the HTML.
I the brown field application I'm working on we have an xslt that transforms the resx file into a javascript file as part of the build process. This works well since this is a web application. I'm not sure if the original question is a web application.
use a hidden field to hold the resource string value and then access the field value in javascript
for example :
" />
var todayString= $("input[name=TodayString][type=hidden]").val();
Add the function in the BasePage class:
protected string GetLanguageText(string _key)
{
System.Resources.ResourceManager _resourceTemp = new System.Resources.ResourceManager("Resources.Language", System.Reflection.Assembly.Load("App_GlobalResources"));
return _resourceTemp.GetString(_key);
}
Javascript:
var _resurceValue = "<%=GetLanguageText("UserName")%>";
or direct use:
var _resurceValue = "<%= Resources.Language.UserName %>";
Note:
The Language is my resouce name. Exam: Language.resx and Language.en-US.resx

Resources