WPF chuyển đổi ngôn ngữ ngay lập tức

MainWindow.xaml

<TextBlock Text="{DynamicResource useNamerHint}"/>
        <Grid Grid.Row="8" Grid.ColumnSpan="2">
            <ComboBox ItemsSource="{Binding ListLanguage}" 
                      HorizontalAlignment="Left" 
                      VerticalAlignment="Center"
                      Width="100"
                      SelectedIndex="0" 
                      SelectionChanged="CoboBox_SelectionChanged"/>
        </Grid>       

MainWindow.cs

/// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        private List<string> listLanguage;
        public List<string> ListLanguage
        {
            get { return listLanguage; }
            set
            {
                listLanguage = value;
                OnPropertyChanged(nameof(ListLanguage));
            }
        }
        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = this;
            ListLanguage = new List<string>() { "Tiếng Việt", "English"};
        }

        private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ComboBox combo = sender as ComboBox;
            if (combo.SelectedItem == null)
                return;
            bool isEN = !combo.SelectedItem.ToString().Equals("English") ? false : true;
            LanguageManager.SetLanguageDictionary(isEN ? ELanguage.English : ELanguage.VietNamese);
            this.InitializeComponent();

        }

        public event PropertyChangedEventHandler PropertyChanged;
        protected virtual void OnPropertyChanged(string newName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(newName));
            }
        }

        private void CoboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ComboBox combo = sender as ComboBox;
            if (combo.SelectedItem == null)
                return;
            bool isEN = !combo.SelectedItem.ToString().Equals("English") ? false : true;
            LanguageManager.SetLanguageDictionary(isEN ? ELanguage.English : ELanguage.VietNamese);
            this.InitializeComponent();
        }
    }

    public static class LanguageManager
    {
        public static void SetLanguageDictionary(ELanguage lang)
        {
            ResourceDictionary dict = new ResourceDictionary();
            switch (lang)
            {
                case ELanguage.English:
                    dict.Source = new Uri("..\\Resource\\ResourceString.en-US.xaml",
                             UriKind.Relative);

                    break;
                case ELanguage.VietNamese:
                    dict.Source = new Uri("..\\Resource\\ResourceString.vi-VN.xaml",
                                   UriKind.Relative);
                    break;
                default:
                    dict.Source = new Uri("..\\Resource\\ResourceString.en-US.xaml",
                              UriKind.Relative);
                    break;
            }
            Cons.CurrentLanguage = lang;
            Application.Current.Resources.MergedDictionaries.Clear();
            Application.Current.Resources.MergedDictionaries.Add(dict);
        }
    }
    public enum ELanguage
    {
        English,
        VietNamese
    }

    public static class Cons
    {
        public static ELanguage CurrentLanguage = ELanguage.English;
    }

App.xaml

<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary x:Name="ThemeDictionary">
                    <ResourceDictionary.MergedDictionaries>
                        <ResourceDictionary Source="/Resource/ResourceString.en-US.xaml"/>
                        <ResourceDictionary Source="/Resource/BaseResource.xaml"/>
                    </ResourceDictionary.MergedDictionaries>
                </ResourceDictionary>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>

Resource\ResourceString.en-US.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:system="clr-namespace:System;assembly=mscorlib"
                    xmlns:local="clr-namespace:Quan_Ly_Ban_Hang.Resource">

    <ImageBrush x:Key="btnLoginImgIdle" ImageSource="/Images/UK/bt_login.png"/>
    <ImageBrush x:Key="btnLoginImgHover" ImageSource="/Images/UK/bt_login_1.png"/>
    <ImageBrush x:Key="btnLoginImgClick" ImageSource="/Images/UK/bt_login_2.png"/>
    
    <system:String x:Key="close">Close</system:String>
    <system:String x:Key="login">Login</system:String>
    <system:String x:Key="useNamerHint">User name</system:String>
    <system:String x:Key="passwordHint">Password</system:String>
    <system:String x:Key="rememberMe">Remember me?</system:String>
    <system:String x:Key="loginButton">Login</system:String>
    <system:String x:Key="createAccount">Don't have an account?</system:String>
    <system:String x:Key="forgetPassword">Forget password?</system:String>
    <system:String x:Key="mainTitle">Champion online - Created by Kteam</system:String>
    <system:String x:Key="register">Register</system:String>
    <system:String x:Key="registerBaner">Please create your account</system:String>
    <system:String x:Key="registerCheckBoxPrivacy">I'm over 18 years of age and I acept these</system:String>
    <system:String x:Key="registerTermAndCondition">Terms and Condition</system:String>
    <system:String x:Key="registerAnd">and</system:String>
    <system:String x:Key="registerPrivacy">Privacy policy</system:String>
    <system:String x:Key="registerRegisterButton">Register</system:String>
    <system:String x:Key="registerAllFieldAreRequire">*All fields are require</system:String>
    <system:String x:Key="registerFirstName">First name</system:String>
    <system:String x:Key="registerUserName">User name</system:String>
    <system:String x:Key="registerPassword">Password</system:String>
    <system:String x:Key="registerReEnterPassword">Re-enter password</system:String>
    <system:String x:Key="registerLastName">Last name</system:String>
    <system:String x:Key="registerEmail">Email</system:String>
    <system:String x:Key="registerCountry">Country</system:String>
    <system:String x:Key="registerDateOfBirth">Date of birth</system:String>
    <system:String x:Key="registerGender">Gender</system:String>
    <system:String x:Key="forgotPasswordTitle">Forget password</system:String>
    <system:String x:Key="forgotPasswordBanner">Reset your password</system:String>
    <system:String x:Key="forgotPasswordHint">Champion Online ID</system:String>
    <system:String x:Key="forgotPasswordButton">Reset password</system:String>
    <system:String x:Key="ok">OK</system:String>
    <system:String x:Key="language">English</system:String>
    
    <system:String x:Key="dota2">Dota2</system:String>
    <system:String x:Key="lol">LOL</system:String>
    <system:String x:Key="tour1vs1">Tour 1vs1</system:String>
    <system:String x:Key="tour5vs5">Tour 5vs5</system:String>
    <system:String x:Key="t1vs1">1vs1</system:String>
    <system:String x:Key="t5vs5">5vs5</system:String>
    <system:String x:Key="other">Other</system:String>
    <system:String x:Key="option">Option</system:String>
    <system:String x:Key="favoriteGame">Favorite game</system:String>
    <system:String x:Key="account">Account</system:String>
    <system:String x:Key="cashier">Cashier</system:String>
    <system:String x:Key="setting">Setting</system:String>
    <system:String x:Key="getStarted">Get started</system:String>
    <system:String x:Key="aboutUS">About US</system:String>
    <system:String x:Key="history">History</system:String>
    <system:String x:Key="typeGame">Type: </system:String>
    <system:String x:Key="champ">Champ: </system:String>
    <system:String x:Key="pricePool">Price pool: </system:String>
    <system:String x:Key="time">Time: </system:String>
    <system:String x:Key="first">1st: </system:String>
    <system:String x:Key="second">2nd: </system:String>
    <system:String x:Key="thir">3rd: </system:String>
    <system:String x:Key="join">Join</system:String>
    <system:String x:Key="check">Check</system:String>
    <system:String x:Key="start">Start</system:String>
    <system:String x:Key="nextGameIn">Next game in: </system:String>
    <system:String x:Key="cashierWithDraw">Withdraw</system:String>
    <system:String x:Key="cashierDeposit">Deposit</system:String>
    <system:String x:Key="cashierHistory">History transfer</system:String>
    <system:String x:Key="cashierDepositBanner">Deposit your money with Paypal. Please click to button.</system:String>
    <system:String x:Key="cashierDepositPaypalButton">Paypal</system:String>
    <system:String x:Key="cashierWithdrawBanner">Withdraw your money with Paypal. Please click to button.</system:String>
    <system:String x:Key="cashierWithdrawPaypalButton">Paypal</system:String>
    <system:String x:Key="cashierMoneyTransferHistory">Transfer history</system:String>
    <system:String x:Key="accountInfoChangeAvatarButton">Change image</system:String>
    <system:String x:Key="accountInfoEditButton">Edit</system:String>
    <system:String x:Key="accountStartID">Nick name:</system:String>
    <system:String x:Key="accountPassword">Password:</system:String>
    <system:String x:Key="accountNewPassword">New password</system:String>
    <system:String x:Key="accountReEnterPassword">Re-enter password</system:String>
    <system:String x:Key="accountChangedPassword">Password changed. Please re-login!</system:String>
    <system:String x:Key="accountEmail">Email:</system:String>
    <system:String x:Key="accountPhone">Phone:</system:String>
    <system:String x:Key="accountAddress">Address:</system:String>
    <system:String x:Key="accountDateOfBirth">Date of birth:</system:String>
    <system:String x:Key="accountGender">Gender:</system:String>
    <system:String x:Key="accountStartPIN">Start PIN:</system:String>
    <system:String x:Key="accountRSASecurityToken">RSASecurityToken:</system:String>
    <system:String x:Key="accountSMSSecurityToken">SMS security token:</system:String>
    <system:String x:Key="accountVerifyAccount">Verify account</system:String>
    
    <system:String x:Key="errorTitle">Error</system:String>
    <system:String x:Key="succesTitle">Successed</system:String>
    <system:String x:Key="loginWrongUserName">Wrong user name</system:String>
    <system:String x:Key="loginWrongPassword">Wrong password</system:String>
    <system:String x:Key="systemError">System error</system:String>
    <system:String x:Key="registerOver18">You have to over 18 years of age to create account</system:String>
    <system:String x:Key="registerInvalidEmail">Invalid email</system:String>
    <system:String x:Key="registerReenterPassword">Re-Enter password must be correct with password</system:String>
    <system:String x:Key="registerExistUserName">Exists user name</system:String>
    <system:String x:Key="registerPasswordNotStrong">Password must contain at least: Upper, Lower, Number and special character</system:String>
    <system:String x:Key="registerSuccess">Successfully register account</system:String>
    <system:String x:Key="registerEmtyUserName">User name can not be null or emty</system:String>
    <system:String x:Key="fogetPasswordSuccessed">New password sent to email!</system:String>
    <system:String x:Key="verify">Verify Account</system:String>
    <system:String x:Key="chamiponRoomHeader">Champion</system:String>
    <system:String x:Key="feeRoomHeader">Fee</system:String>
    <system:String x:Key="timeRoomHeader">Time</system:String>
    <system:String x:Key="typeRoomHeader">Type</system:String>
    <system:String x:Key="statusRoomHeader">Status</system:String>
</ResourceDictionary>

Resource\ResourceString.vi-VN.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:system="clr-namespace:System;assembly=mscorlib"
                    xmlns:local="clr-namespace:Quan_Ly_Ban_Hang.Resource">

    <ImageBrush  x:Key="btnLoginImgIdle" ImageSource="/Images/VN/bt_login.png"/>
    <ImageBrush  x:Key="btnLoginImgHover" ImageSource="/Images/VN/bt_login_1.png"/>
    <ImageBrush x:Key="btnLoginImgClick" ImageSource="/Images/VN/bt_login_2.png"/>
    
    <system:String x:Key="close">Đóng</system:String>
    <system:String x:Key="login">Đăng nhập</system:String>
    <system:String x:Key="useNamerHint">Tài khoản</system:String>
    <system:String x:Key="passwordHint">Mật khẩu</system:String>
    <system:String x:Key="rememberMe">Nhớ tài khoản</system:String>
    <system:String x:Key="loginButton">Đăng nhập</system:String>
    <system:String x:Key="createAccount">Tạo tài khoản</system:String>
    <system:String x:Key="forgetPassword">Quên mật khẩu</system:String>
    <system:String x:Key="mainTitle">Champion online - Lập trình bởi Kteam</system:String>
    <system:String x:Key="register">Đăng kí</system:String>
    <system:String x:Key="registerBaner">Tạo tài khoản</system:String>
    <system:String x:Key="registerCheckBoxPrivacy">Tôi trên 18 tuổi và tôi đồng ý những</system:String>
    <system:String x:Key="registerTermAndCondition">Điều khoản sử dụng</system:String>
    <system:String x:Key="registerAnd">và</system:String>
    <system:String x:Key="registerPrivacy">Thông tin bảo mật</system:String>
    <system:String x:Key="registerRegisterButton">Đăng kí</system:String>
    <system:String x:Key="registerAllFieldAreRequire">Tất cả các trường cần phải điền</system:String>
    <system:String x:Key="registerFirstName">Tên</system:String>
    <system:String x:Key="registerUserName">Tài khoản</system:String>
    <system:String x:Key="registerPassword">Mật khẩu</system:String>
    <system:String x:Key="registerReEnterPassword">Nhập lại mật khẩu</system:String>
    <system:String x:Key="registerLastName">Họ</system:String>
    <system:String x:Key="registerEmail">Địa chỉ Email</system:String>
    <system:String x:Key="registerCountry">Quốc gia</system:String>
    <system:String x:Key="registerDateOfBirth">Ngày sinh</system:String>
    <system:String x:Key="registerGender">Giới tính</system:String>
    <system:String x:Key="forgotPasswordTitle">Quên mật khẩu</system:String>
    <system:String x:Key="forgotPasswordBanner">Cấp lại mật khẩu</system:String>
    <system:String x:Key="forgotPasswordHint">Email hoặc Champion Online ID</system:String>
    <system:String x:Key="forgotPasswordButton">Cấp lại mật khẩu</system:String>
    <system:String x:Key="ok">Đồng ý</system:String>
    <system:String x:Key="language">Tiếng Việt</system:String>
</ResourceDictionary>

Resource\BaseResource.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:Quan_Ly_Ban_Hang.Resource">
    <Style TargetType="Image">
        <Setter Property="Cursor" Value="Hand"></Setter>
    </Style>
    
    <Style TargetType="Button"  x:Key="btnLoginStyle">
        <Setter Property="Background" Value="{DynamicResource btnLoginImgIdle}"></Setter>
        <Setter Property="BorderThickness" Value="0"></Setter>
        <Setter Property="Cursor" Value="Hand" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
                        <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
                    Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" 
                    SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" RecognizesAccessKey="True"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Background" Value="{DynamicResource btnLoginImgHover}"/>           
                        </Trigger>
                        <Trigger Property="IsPressed" Value="True">
                            <Setter Property="Background" Value="{DynamicResource btnLoginImgClick}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    
</ResourceDictionary>

 

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