WPF多语言动态切换

定义多语言类： 

using LanguageTest.Resources;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Resources;
using System.Text;

namespace LanguageTest
{
    public class LanguageManager : INotifyPropertyChanged
    {
        private readonly ResourceManager _resourceManager;
        private static readonly Lazy<LanguageManager> _lazy = new Lazy<LanguageManager>(() => new LanguageManager());      
        public static LanguageManager Instance => _lazy.Value;
        public event PropertyChangedEventHandler PropertyChanged;

        private LanguageManager()
        {
            _resourceManager = new ResourceManager(typeof(Lang));
        }

        public string this[string name]
        {
            get
            {
                if (name == null)
                {
                    throw new ArgumentNullException(nameof(name));
                }
                return _resourceManager.GetString(name);
            }
        }

        public void ChangeLanguage(CultureInfo cultureInfo)
        {
            CultureInfo.CurrentCulture = cultureInfo;
            CultureInfo.CurrentUICulture = cultureInfo;
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Item[]"));
        }
    }
}

使用： 

  
<Window x:Class="LanguageTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:LanguageTest"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <StackPanel HorizontalAlignment="Center">
        <ComboBox x:Name="LanguageList" SelectedIndex="0" Margin="10" SelectionChanged="LanguageList_SelectionChanged"/>
        <TextBlock FontSize="20" Margin="10" Text="{Binding [String1], Source={x:Static local:LanguageManager.Instance}}"/>
        <TextBox FontSize="20" Margin="10" Text="{Binding [String2], Source={x:Static local:LanguageManager.Instance}, Mode=OneWay}"/>
        <Button FontSize="20" Margin="10" Content="{Binding [String3], Source={x:Static local:LanguageManager.Instance}, Mode=OneWay}"/>
    </StackPanel>
</Window>

 程序地址