@using Microsoft.AspNetCore.Mvc.Localization
@model Core1RtmTestResources.ViewModels.Account.RegisterViewModel

@inject IHtmlLocalizerFactory HtmlLocalizerFactory

@{
    var localizer = HtmlLocalizerFactory.Create(
                baseName: "Controllers.TestLocalController" /*مشخصات کنترلر جاری*/,
                location: "Core1RtmTestResources.ExternalResources" /*نام اسمبلی ثالث*/);

    var sharedLocalizer = HtmlLocalizerFactory.Create(
                baseName: "SharedResource" /*مشخصات*/,
                location: "Core1RtmTestResources.ExternalResources" /*نام اسمبلی ثالث*/);
}

Activate Persian Localization:
<a asp-controller="TestLocal" asp-action="SetFaLanguage">SetFaLanguage</a>
<br />
Message @ViewData["Message"]
<br />
@localizer["<b>Hello</b><i> {0}</i>", "DNT"]
<br />
@localizer["About Title"]
<br />
shared data: @sharedLocalizer["About Title"]
<form asp-controller="TestLocal" asp-action="Index" method="post" class="form-horizontal" role="form">
    <input asp-for="Email" />
    <span asp-validation-for="Email" class="text-danger"></span>
    <input type="submit" />
</form>