Đa ngôn ngữ trong ASP.NET Core MVC 5

Chủ Nhật, 16/08/2020

Tram Ho

Standard

.NET Core SDK 5.0
Bản xem trước cộng đồng Visual Studio 2019

Khởi tạo dự án

Tệp index.cshtml

@inject Microsoft.AspNetCore.Mvc.Localization.IViewLocalizer localizer

@{
    ViewData["Title"] = "Home Page";
}

&lt;div class="text-center"&gt;
    &lt;h1 class="display-4"&gt;@localizer["HelloWorld"]&lt;/h1&gt;
    &lt;p&gt;Learn about &lt;a href="https://docs.microsoft.com/aspnet/core"&gt;building Web apps with ASP.NET Core&lt;/a&gt;.&lt;/p&gt;
&lt;/div&gt;

@inject Microsoft.AspNetCore.Mvc.Localization.IViewLocalizer localizer

ViewData["Title"] = "Home Page";

}

<h1 class="display-4">@localizer["HelloWorld"]</h1>

Learn about <a href="https://docs.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.

</div>

Tệp Startup.cs

<span class="token keyword">using</span> <span class="token namespace">Microsoft <span class="token punctuation">.</span> AspNetCore <span class="token punctuation">.</span> Builder</span> <span class="token punctuation">;</span>
<span class="token keyword">using</span> <span class="token namespace">Microsoft <span class="token punctuation">.</span> AspNetCore <span class="token punctuation">.</span> Hosting</span> <span class="token punctuation">;</span>
<span class="token keyword">using</span> <span class="token namespace">Microsoft <span class="token punctuation">.</span> AspNetCore <span class="token punctuation">.</span> Mvc <span class="token punctuation">.</span> Razor</span> <span class="token punctuation">;</span>
<span class="token keyword">using</span> <span class="token namespace">Microsoft <span class="token punctuation">.</span> Extensions <span class="token punctuation">.</span> Configuration</span> <span class="token punctuation">;</span>
<span class="token keyword">using</span> <span class="token namespace">Microsoft <span class="token punctuation">.</span> Extensions <span class="token punctuation">.</span> DependencyInjection</span> <span class="token punctuation">;</span>
<span class="token keyword">using</span> <span class="token namespace">Microsoft <span class="token punctuation">.</span> Extensions <span class="token punctuation">.</span> Hosting</span> <span class="token punctuation">;</span>

<span class="token keyword">namespace</span> <span class="token namespace">Localization</span>
<span class="token punctuation">{</span>

    <span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">Startup</span>
    <span class="token punctuation">{</span>
        <span class="token keyword">public</span> <span class="token function">Startup</span> <span class="token punctuation">(</span> <span class="token class-name">IConfiguration</span> configuration <span class="token punctuation">)</span>
        <span class="token punctuation">{</span>
            Configuration <span class="token operator">=</span> configuration <span class="token punctuation">;</span>
        <span class="token punctuation">}</span>

        <span class="token keyword">public</span> <span class="token return-type class-name">IConfiguration</span> Configuration <span class="token punctuation">{</span> <span class="token keyword">get</span> <span class="token punctuation">;</span> <span class="token punctuation">}</span>

        <span class="token keyword">public</span> <span class="token return-type class-name"><span class="token keyword">void</span></span> <span class="token function">ConfigureServices</span> <span class="token punctuation">(</span> <span class="token class-name">IServiceCollection</span> services <span class="token punctuation">)</span>
        <span class="token punctuation">{</span>
            services <span class="token punctuation">.</span> <span class="token function">AddLocalization</span> <span class="token punctuation">(</span> opt <span class="token operator">=&gt;</span> <span class="token punctuation">{</span> opt <span class="token punctuation">.</span> ResourcesPath <span class="token operator">=</span> <span class="token string">"Resources"</span> <span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            services <span class="token punctuation">.</span> <span class="token function">AddMvc</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">.</span> <span class="token function">AddViewLocalization</span> <span class="token punctuation">(</span> LanguageViewLocationExpanderFormat <span class="token punctuation">.</span> Suffix <span class="token punctuation">)</span> <span class="token punctuation">.</span> <span class="token function">AddDataAnnotationsLocalization</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            services <span class="token punctuation">.</span> <span class="token function">AddControllersWithViews</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
        <span class="token punctuation">}</span>

        <span class="token keyword">public</span> <span class="token return-type class-name"><span class="token keyword">void</span></span> <span class="token function">Configure</span> <span class="token punctuation">(</span> <span class="token class-name">IApplicationBuilder</span> app <span class="token punctuation">,</span> <span class="token class-name">IWebHostEnvironment</span> env <span class="token punctuation">)</span>
        <span class="token punctuation">{</span>
            <span class="token keyword">if</span> <span class="token punctuation">(</span> env <span class="token punctuation">.</span> <span class="token function">IsDevelopment</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">)</span>
            <span class="token punctuation">{</span>
                app <span class="token punctuation">.</span> <span class="token function">UseDeveloperExceptionPage</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>  
            <span class="token punctuation">}</span>
            <span class="token keyword">else</span>
            <span class="token punctuation">{</span>
                app <span class="token punctuation">.</span> <span class="token function">UseExceptionHandler</span> <span class="token punctuation">(</span> <span class="token string">"/Home/Error"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
                app <span class="token punctuation">.</span> <span class="token function">UseHsts</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            <span class="token punctuation">}</span>
            app <span class="token punctuation">.</span> <span class="token function">UseHttpsRedirection</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            app <span class="token punctuation">.</span> <span class="token function">UseStaticFiles</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            app <span class="token punctuation">.</span> <span class="token function">UseRouting</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            app <span class="token punctuation">.</span> <span class="token function">UseAuthorization</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            <span class="token class-name"><span class="token keyword">var</span></span> supportedCultures <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token punctuation">[</span> <span class="token punctuation">]</span> <span class="token punctuation">{</span> <span class="token string">"en"</span> <span class="token punctuation">,</span> <span class="token string">"vi"</span> <span class="token punctuation">}</span> <span class="token punctuation">;</span>
            <span class="token class-name"><span class="token keyword">var</span></span> localizationOptions <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token constructor-invocation class-name">RequestLocalizationOptions</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">.</span> <span class="token function">SetDefaultCulture</span> <span class="token punctuation">(</span> supportedCultures <span class="token punctuation">[</span> <span class="token number">0</span> <span class="token punctuation">]</span> <span class="token punctuation">)</span>
                <span class="token punctuation">.</span> <span class="token function">AddSupportedCultures</span> <span class="token punctuation">(</span> supportedCultures <span class="token punctuation">)</span>
                <span class="token punctuation">.</span> <span class="token function">AddSupportedUICultures</span> <span class="token punctuation">(</span> supportedCultures <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            app <span class="token punctuation">.</span> <span class="token function">UseRequestLocalization</span> <span class="token punctuation">(</span> localizationOptions <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            app <span class="token punctuation">.</span> <span class="token function">UseEndpoints</span> <span class="token punctuation">(</span> endpoints <span class="token operator">=&gt;</span>
            <span class="token punctuation">{</span>
                endpoints <span class="token punctuation">.</span> <span class="token function">MapControllerRoute</span> <span class="token punctuation">(</span>
                    <span class="token named-parameter punctuation">name</span> <span class="token punctuation">:</span> <span class="token string">"default"</span> <span class="token punctuation">,</span>
                    <span class="token named-parameter punctuation">pattern</span> <span class="token punctuation">:</span> <span class="token string">"{controller=Home}/{action=Index}/{id?}"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
            <span class="token punctuation">}</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>

<span class="token punctuation">}</span>

using Microsoft . AspNetCore . Builder ;

using Microsoft . AspNetCore . Hosting ;

using Microsoft . AspNetCore . Mvc . Razor ;

using Microsoft . Extensions . Configuration ;

using Microsoft . Extensions . DependencyInjection ;

using Microsoft . Extensions . Hosting ;

namespace Localization

{

public class Startup

{

public Startup ( IConfiguration configuration )

{

Configuration = configuration ;

}

public IConfiguration Configuration { get ; }

public void ConfigureServices ( IServiceCollection services )

{

services . AddLocalization ( opt => { opt . ResourcesPath = "Resources" ; } ) ;

services . AddMvc ( ) . AddViewLocalization ( LanguageViewLocationExpanderFormat . Suffix ) . AddDataAnnotationsLocalization ( ) ;

services . AddControllersWithViews ( ) ;

}

public void Configure ( IApplicationBuilder app , IWebHostEnvironment env )

{

if ( env . IsDevelopment ( ) )

{

app . UseDeveloperExceptionPage ( ) ;

}

else

{

app . UseExceptionHandler ( "/Home/Error" ) ;

app . UseHsts ( ) ;

}

app . UseHttpsRedirection ( ) ;

app . UseStaticFiles ( ) ;

app . UseRouting ( ) ;

app . UseAuthorization ( ) ;

var supportedCultures = new [ ] { "en" , "vi" } ;

var localizationOptions = new RequestLocalizationOptions ( ) . SetDefaultCulture ( supportedCultures [ 0 ] )

. AddSupportedCultures ( supportedCultures )

. AddSupportedUICultures ( supportedCultures ) ;

app . UseRequestLocalization ( localizationOptions ) ;

app . UseEndpoints ( endpoints =>

{

endpoints . MapControllerRoute (

name : "default" ,

pattern : "{controller=Home}/{action=Index}/{id?}" ) ;

} ) ;

}

Mã nguồn: https://github.com/donhuvy/aspnetcore5_localization

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Nguồn bài viết : Viblo

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