Force This Logic To Use The CultureInfo Attached To The Current Thread Instead Of The InvariantCulture?
Nov 18, 2010
I have an ASP .NET Web Forms application that makes use of the 'WebMethod' attribute for making AJAX calls from jQuery. I'm dealing with trying to localize the application so I recently created a web method that looks something like this for testing purposes:
[code]....
I have an HttpModule that is setting the 'CurrentCulture' and 'CurrentUICulture' properties of the current thread to 'pt-BR' (Brazilian Portuguese) at the 'BeginRequest' event.
Client side, I have a jQuery AJAX call to this 'HandleDate' web method that is providing the dateValue parameter as '18/10/2010'. In the 'pt-BR' culture this should evaluate to October 18, 2010 (day/month/year date format).
When I execute this I'm getting back an error indicating that the 'System.Web.Script.Serialization.ObjectConverter' is blowing up stating that '18/11/2010' is not a valid value for DateTime. The stack trace included with the error indicates that this was thrown by the 'System.ComponentModel.DateTimeCoverter.ConvertFrom' method, which accepts the object to be converted in addition to a CultureInfo object representing the culture that should be applied during the conversion.
I fired up Reflector and it appears that the 'ObjectConverter' is invoking the 'DateTimeConverter' using CultureInfo.InvariantCulture instance, which I think is the problem.
How can I force this logic to use the CultureInfo attached to the current thread instead of the InvariantCulture?
I have a static class with serveral static methods. In these methods, I'm trying to access the current thread's context using HttpContext.Current. For example:
var userName = HttpContext.Current.User.Identity.Name;
However, when I do that, I receive a NullReferenceException, the infamous "Object reference not set to an instance of an object."
I have a security manager in my application that works for both windows and web, the process is simple, just takes the user and pwd and authenticates them against a database then sets the Thread.CurrentPrincipal with a custom principal. For windows applications this works fine, but I have problems with web applications.
After the process of authentication, when I'm trying to set the Current.User to the custom principal from Thread.CurrentPrincipal this last one contains a GenericPrincipal. Am I doing something wrong? This is my code:
I want to remove checked items from checklistbox (winform control) in class file method which i am calling asynchronously using deletegate. but it showing me this error message:-
Cross-thread operation not valid: Control 'checkedListBox1' accessed from a thread other than the thread it was created on.
i have tried invoke required but again got the same error. Sample code is below:
Bit of a long shot, but is there a way in ASP.NET to dynamically get the website's URL [URL] when there is no HttpContext.Current available.
There is no HttpContext because the code is running in a background thread* (but under the ASP.NET AppDomain). I have a background process that sends emails out every evening, and needs to include the Web address, but I don't want to hard code it because of deployments and testing (it changes from [URL] to[URL] and then to [URL] for the live site).
We have a web site which implements a central HttpSessionState management in App_Code like this:
[code]...
All of this worked fine ultil we needed to implement a time consuming process in a new thread... In the second thread HttpContext.Current.Session is null (we know its because the current context its different between threads) so everything fails :
Investigating we found that you could pass the session from one thread to another like this:
I have a ASP.NET page with a WebMethod that creates an object and runs one of the object's methods in a new thread.I need to access the System.Web.HttpContext.Current.Response.ContentType property from within this thread. Each time I (try to) access it, I receive a NullReferenceException.
When I was localizing my web application I got one strange doubt.
In the first request i set current thread's current culture to user chosen culture. It worked fine for that particular request. But when i browsed for other page, server rendered content in default english culture. I think the reason meight be "http is stateless" means current request is served by a thread whose culture was set properly. Send request will be serverd another thread which does not about previous thread. So we should once again assign culture to this thread. Localization can be done by setting culture to a session variable.
So my question is what is the benifit that we get by setting culture to current thread. With setting to thread we can show the page in user desired language.
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I'm new to threading and have used it successfully, but limited. I can spawn a thread and have the main thread reference variables in the spawned thread, but I don't know how to allow the spawned thread to reference (and update) variables in the main thread.
Any example threading code I've seen on the web appears to be WAY more complicated than what I do, so I am unable to understand or integrate into my code.
lock (this) { if (!isGoodPassword) Thread.Sleep(2000); } I would expect that this would allow all correct passwords without stalling, but if one user enters a bad password another successful password from a different user would also be blocked. However, the lock doesn't seem to lock across ASP.NET threads.
I want a example of multithreading .i want to use it in a web form not on console.i am using C#.net .and how to use thread.sleep method for a particular thread.
Does the DateTime object stores the CultureInfo with it, or you need to use the Formatter to format the DateTime according to current culture ?
I have a class property that retuns a DateTime. Within that property I am setting the DateTime object with current culture information using CultureInfo object. Below is the code for class property I am using:
So my question is when I will use the above property in my code, will it have the corrosponding culture information that I am setting in its get method, or I will have to use the same CONVERT code for formatting date time. The restriction here is that the Property should return only DateTime type.
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I want to format "{1500.50:c}" as: '1500.50', but the standard for my culture 'nl-NL', is: '€ 1.500,00'. We don't have the user-rights, since it's a webapplication, to register custom cultures, therefore we're looking for a runtime solution.
We want a "set and forget" solution. Not a Util class with static (extension) methods, but an application wide solution, so we can continue to use the standard .ToString("c"), or ToString("N") logic, which would follow our custom rules. This would be to alter the .NumberFormat of the Culture, but how? Everything seems to be readonly.
I could definitely accomplish what I want with a custom handler, but I was hoping it would be possible to adjust the web.config to define allowable cultures. Basically, I have a website that has resource files for a number of languages. I would like to deploy the same website to different domains with different configurations specifying the default cultures. I know I can set a specific culture to be used in the web.config, but can I also specify multiple cultures? Even though I have English language resource files, I don't want a visitor from the US to certain domains to see the English version, but I can't fix the site for a single culture, either.
I am Using javascript calander to select date into textbox. I have Set the Date Format MM-DD-YYYY . Now when i convert this text string to DateTime then my Actual month of date is changed.
IFormatProvider theCultureInfo = new System.Globalization.CultureInfo("en-GB", true); DateTime date = DateTime.ParseExact(txtDate.Text, "mm-dd-yyyy", theCultureInfo);
For example If i Put in Text Box 2-12-2011 (12 Feb 2011) Then After Converting It will 12-01-2011 00:02:00 .
I had a database created in sql server 2005.In order to upload my site i unistalled sql 2005 n installed sql2008. N now im not able to attach my database.Its giving error access denied.Im using windows 7 home. I ran sql 2008 as administrator also.Then too its giving the same error.Now how can i attach my database?
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