Map appropriate Resource (.resx) file in code - ASP.NET MVC

Question

I have the following resource files in my ASP.NET MVC application to stored form validation error message for both English and Spanish

ErrorMessages.resx -- English Error Messages
ErrorMessages.sp.resx -- Spanish Error Messages

In my models that require the System.ComponentModel.DataAnnotations Required Attributes they are marked like this:

[Required(ErrorMessageResourceType = typeof(ErrorMessages), ErrorMessageResourceName)]
public string MyProperty { get; set; }

In my controller, I am reading a JavaScript cookie that contains the user's selected language on the site and programmatically set the 'CultureInfo' of the current thread and the HTTP session:

public ActionResult MyController() 
{
    var language = HttpContext.Request.Cookies["language"].Value;

    if(language.Equals("english")) 
    {
        HttpContext.Session["culture"] = "en-US";
        Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");
    }
    else 
    {
        HttpContext.Session["culture"] = "es-US";
        Thread.CurrentThread.CurrentCulture = new CultureInfo("es-US");
    }
}

How do I set the appropriate resource file once the CultureInfo value has been modified?

I renamed my files to the appropriate CultureInfo value. Thanks for the suggestion — Michael Kniskern
– Michael Kniskern, Commented Apr 25, 2019 at 16:37

koryakinp · Accepted Answer · 2019-04-25 01:58:56Z

1

Spanish .resx file should be *.es.resx, not *.sp.resx.

In order to resolve translations from an appropriate .resx file you need to assign Thread.CurrentThread.CurrentUICulture, not Thread.CurrentThread.CurrentCulture

edited Apr 25, 2019 at 1:58

answered Apr 25, 2019 at 0:18

koryakinp

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5 Comments

Michael Kniskern Over a year ago

When I switched to CurrentUICulture property, it is still using the english ErrorMessages.resx file. I need my app to know when CurrentUICulture = "es-US" use the ErrorMessages.sp.resx

Michael Kniskern Over a year ago

I did get it to work. I modified my code to the following: Thread.CurrrentThread.CurrentUICulture = CultureInfo.GetCultureInfo("es-US");

koryakinp Over a year ago

@MichaelKniskern why do not you post an answer, so others can benefit from it too ?

Michael Kniskern Over a year ago

I just updated the question with what I did to get it to work.

koryakinp Over a year ago

@MichaelKniskern, you suppose to post it as an answer, not add an answer to the body of the question.

Michael Kniskern · Accepted Answer · 2019-04-25 16:54:05Z

1

Using @Koryakinp suggestion, I modified the controller code to the following:

var language = HttpContext.Request.Cookies["language"].Value;

if(language.Equals("english"))
{
    HttpContext.Session["culture"] = "en-US";
    Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo("en-US");
}

Also, I had to restructure the .resx files. I created a .resx named "ErrorMessages" as the base .resx and renamed the existing .resx files:

ErrorMessages.resx
ErrorMessages.en-US.resx
ErrorMessages.es-US.resx

answered Apr 25, 2019 at 16:54

Michael Kniskern

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