Multilingual application using asp dot net core mvc with portable objects (PO)

What is PO files?

PO stands for portable objects, these are the files that containing translated text string each for language. It has some advantages over .resx (resource files).

1. It Support pluralization

2. PO files are not compiled like .resx

Example:

en.po

#: 1. Hello World

msgid "Hello_World"

msgstr "Hello World!"

hi.po

#: 1. Hello World

msgid "Hello_World"

msgstr "संसार को नमस्ते"

Configure PO files for ASP.Net Core MVC:

To configure PO files we have to include package reference:

<PackageReference Include="OrchardCore.Localization.Core" Version="1.0.0-rc1-10004" />

Now the time is to configure the services and middleware

Add these required configuration method in startup.cs

public void ConfigureServices(IServiceCollection services)

{

services.AddMvc()

.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)

        .AddDataAnnotationsLocalization();

// Put your .po files in Resources folder

services.AddPortableObjectLocalization(options => options.ResourcesPath = "Resources");

services.Configure<RequestLocalizationOptions>(options =>

        {

           var supportedCultures = new List<CultureInfo>

                 {

                   new CultureInfo("en-US"),

                    new CultureInfo("hi-IN")

                 };

                options.DefaultRequestCulture = new RequestCulture("en-US");

                 options.SupportedCultures = supportedCultures;

                options.SupportedUICultures = supportedCultures;

        });

}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)

{

   app.UseRequestLocalization();

}

Now add the following code on view:

@using Microsoft.AspNetCore.Mvc.Localization

@inject IViewLocalizer Localizer

<p>@Localizer["Hello world!"]&lt;/p>

Test the application by Navigate the URL:

/Home/About?culture=en-US

/Home/About?culture=hi-IN

Model Localization:

public class RoleDto

  {

     [Display(Name = "Name")]

     [Required(ErrorMessage = "this_field_is_required")]

     public string Name { get; set; }

  }

en.po

#: 1. Name

msgid "Name"

msgstr "Name"

#: 2. This field is required

msgid "this_field_is_required"

msgstr "This field is required."

hi.po

#: 1. Nam

msgid "Name"

msgstr "नाम"

#: 2. This field is required

msgid "this_field_is_required"

msgstr "यह फ़ील्ड आवश्यक है।"