Specify language for ASP.NET Core 2 Localizer in Razor Pages

Question

I'm working on an ASP Net Core 2 application that uses Microsoft.Extensions.Localization.IStringLocalizer and Microsoft.AspNetCore.Mvc.Localization to provide trilingual content. The resource files (eg Controllers.HomeController.fr.resx and Controllers.HomeController.nl.resx are working fine and the following is typical of the Razor Page views:

@using Microsoft.Extensions.Localization
@using Microsoft.AspNetCore.Mvc.Localization
@using System.Globalization;

@inject IStringLocalizer<HomeController> Localizer
@inject IHtmlLocalizer<HomeController> HtmlLocalizer
...
<span style="font-weight: bold">@Localizer["My string 1"]</span>
...
<li>@HtmlLocalizer["My string 2 <span style=\"font-weight: bold;\">with bold</span>."]</li>

In the rest of the application, the culture is determined by the browser header, as described here .

The question

I'm building a feature that has to display content in the language specified by the user in a form, regardless of the browser language header. Note : The browser language header is still used normally to determine the language in which to display the overall page content, but this specific content is provided by a ViewComponent and is used to create a printable label for giving to users. Therefore I also can't provide the language in the URL lang parameter as this would affect the language of the entire page.

I want to do something like the following

<span style="font-weight: bold">@Localizer["Usage Instructions", "nl"]</span>

but I don't think this exists (tried it). Ie, set the language/culture on a string-specific basis.

However, from the tip in Visual Studio (see screenshot), it looks like the arguments might allow me to set the language, I just can't find much documentation for it beyond general localization tutorials such as microsoft one .

The closest I can find is this docs but I still don't see details of the params object[] arguments

Thanks in advance for any suggestions!

Answer 1

IHtmlLocalizer contains method WithCulture which creates a localizer with specified culture

@inject IHtmlLocalizer<HomeController> HtmlLocalizer

@{
    var nlHtmlLocalizer = HtmlLocalizer.WithCulture(new System.Globalization.CultureInfo("nl"));
}

<li>@nlHtmlLocalizer ["My string 2 <span style=\"font-weight: bold;\">with bold</span>."]</li>