How to Create Multiple Language Website in C#

satinder singh / Updated : / 16 Comments

  Multilingual Website in C# : In this tutorial, we are going to create multi-language website in C#. A website which can support Multiple Language and change according to the culture of a specific geographical location is not a new topic. Web sites to support multiple languages can be a challenging and time-consuming process.

You find many articles related on internet and well explained, But I still see that many of them are complicated for “Beginners”. I tried to make this article approach a more dynamic way to manage languages regarding Globalization/ Localization/ Culture concepts.

With standard HTML pages, you may have to create and maintain duplicate versions of each page for each supported language as well as having the language content embedded into the HTML, where content can’t easily be edited.

For those of you who have to develop multi-lingual interfaces and applications, you’ll be glad to know that ASP.NET makes things easier.

ASP.NET and the .NET framework ship with support for multilingual applications multiple language website, namely in the form of Resource Files, the CultureInfo class, and the System.Globalization and System.Resources.ResourceManager namespaces.

First we need to understand what is meant by `globalization`, `localization` and `culture` in this context.

Globalization: Globalization is a process of identifying all the parts of your application that need to be different for respective languages and separate them from the core application.

Localization:  Localization is a process of creating and configuring your application for a specific language.

Cultures:  A culture is a combination of the language that you speak and the geographical location you belong to. It also includes the way you represent dates, times, and currencies.

It’s important to have a good understanding of Cultures since our new code will make use of them – specifically the `System.Globalization.CultureInfo` class, and the culture name value which follows the RFC 1766 naming standard. Basically, you create a new CultureInfo instance by specifying the culture name in the constructor:

 CultureInfo c = new CultureInfo("en-US");


Follow the step to create  multiple language websites ( Multilingual ):

Step 1:
Create new website⇒ Solution Explorer⇒ Select sln right click and Add Asp.Net Folder – `App_GlobalResources`;
Now under `App_globalization` add resources file (.resx  file), I add three resx file default for English, fr for french, de for german having key pair values;
Structure look like as shown in below image:
A website which can support Multiple Language
Step 2:
Add Global.asax file: Code: write this piece of code
Public void Application_BeginRequest(Object sender, EventArgs e) 
 // Code that runs on application startup                                                            
 HttpCookie cookie = HttpContext.Current.Request.Cookies["CultureInfo"];
 if (cookie != null && cookie.Value != null) 
  System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(cookie.Value);
  System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo(cookie.Value);
  System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo("en");
  System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en");


Step 3: Add masterPage having a drop-down list control;


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Globalization;
using System.Threading;
public partial class MasterPage : System.Web.UI.MasterPage
    protected void Page_Load(object sender, EventArgs e)
        if (!Page.IsPostBack)
            if (Session["ddindex"] != null)
                ddlanguage.SelectedValue = Session["ddindex"].ToString();
                ddlanguage.SelectedIndex = Convert.ToInt32(Session["ddindex"].ToString());
                ddlanguage.SelectedValue = Thread.CurrentThread.CurrentCulture.Name;
    protected void ddlanguage_SelectedIndexChanged(object sender, EventArgs e)
        Session["language"] = ddlanguage.SelectedValue;
        //Sets the cookie that is to be used by Global.asax
        HttpCookie cookie = new HttpCookie("CultureInfo");
        cookie.Value = ddlanguage.SelectedValue;
        //Set the culture and reload for immediate effect.
        //Future effects are handled by Global.asax
        Thread.CurrentThread.CurrentCulture = new CultureInfo(ddlanguage.SelectedValue);
        Thread.CurrentThread.CurrentUICulture = new CultureInfo(ddlanguage.SelectedValue);
        if (cookie.Value == "en") { Session["ddindex"] = 0; } else if (cookie.Value == "fr") { Session["ddindex"] = 1; } else if (cookie.Value == "de") { Session["ddindex"] = 2; }

Add childPage with controls and on drop-down list selected index it will display respective language content My sample Child page design code : set text as resources key; i.e `Text=”<%$Resources:Resources,FieldName %>”`

    <table id="Table1">
                <td class="style1">
                    <asp:Label ID="Label2" runat="server" Text="<%$Resources:Resources, FirstName %>"></asp:Label></td>
                    <asp:Label ID="Label3" runat="server" Text="<% $Resources:Resources, LastName %>"></asp:Label></td>
                <td class="style1">
                    <asp:Label ID="Label4" runat="server" Text="<%$Resources:Resources, Gender %>"></asp:Label></td>
                    <asp:RadioButtonList ID="RdBtnLtGender" RepeatDirection="Horizontal" runat="server">
                        <asp:ListItem Text="<%$Resources:Resources, Male %>" Value="1"></asp:ListItem>
                        <asp:ListItem Text="<%$Resources:Resources, Female %>" Value="0"></asp:ListItem>
                <td class="style1">
                    <asp:Label ID="Label7" runat="server" Text="<%$ Resources:Resources, Month %>"></asp:Label></td>
                    <asp:DropDownList Height="20px" ID="ddyear" runat="server" Width="64px">
                        <asp:ListItem Value="1">Jan</asp:ListItem>
                        <asp:ListItem Value="2">Feb</asp:ListItem>
                        <asp:ListItem Value="3">Mar</asp:ListItem>
                        <asp:ListItem Value="4">Apr</asp:ListItem>
                        <asp:ListItem Value="5">May</asp:ListItem>
                        <asp:ListItem Value="6">Jun</asp:ListItem>
                        <asp:ListItem Value="7">Jul</asp:ListItem>
                        <asp:ListItem Value="8">Aug</asp:ListItem>
                        <asp:ListItem Value="9">Sep</asp:ListItem>
                        <asp:ListItem Value="10">Oct</asp:ListItem>
                        <asp:ListItem Value="11">Nov</asp:ListItem>
                        <asp:ListItem Value="12">Dec</asp:ListItem>


ScreenShots :

OutPut   1) For English

create multiple language website in c#

2) For French
create multiple language website in c#
Resx file c#. System.Globalization and System.Resources.ResourceManager
Hope you enjoyed this tutorial. If you have any recommendations, please let us know what you think in the comment section below! See you again next time!


16 comments on “How to Create Multiple Language Website in C#”

  1. akash

    how i suppose to change whole project , i have nearly 1000 pages in my web application, is there any tool to change that

  2. mina

    Thanks, thats very good and helpful
    But I have two problem
    1)Rahul update which part if code in your article
    2)If my dropdown list elements comes from data bound of database, which part of code must be change

  3. Rajesh

    Yes, I will implement on my site and make this website multilingual multiple languages in c

  4. Sandy

    I am using Visual Studio 15, and when I click on my existing project solution, I don’t have the option of
    ” Add Asp.Net Folder – `App_GlobalResources`;”. Is that because it is an existing project? Is there a way to do what you describe with an existing project?

    • Satinder singh

      Hi Sandy,
      Make sure you have selected project as (Webforms) and not MVC, then right click on Web Project and you will see Add Asp.Net Folder – App_GlobalResources folders.

      • Sandy

        Oh no. My project is MVC. I am new using .NET and C#, hence the newbie question! Is there a way for me to add in the Spanish option?


  5. Rahul

    Very good,., Just wanted to add that to update existing cookie use

    HttpContext.Current.Response.SetCookie(new HttpCookie(“CultureInfo”, ddlanguage.SelectedValue));

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