多语言
LocalizationService.cs
using System.Collections.Generic;
using System.Globalization;
namespace _10_Localization.Services;
public class LocalizationService
{
private static LocalizationService? _instance;
public static LocalizationService Instance => _instance ??= new LocalizationService();
private string _currentLanguage = "zh-CN";
public string CurrentLanguage => _currentLanguage;
public event System.Action? LanguageChanged;
private readonly Dictionary<string, Dictionary<string, string>> _translations = new()
{
["zh-CN"] = new Dictionary<string, string>
{
["WelcomeText"] = "欢迎",
["WelcomeMessage"] = "欢迎使用多语言演示应用",
["UsernameLabel"] = "用户名",
["PasswordLabel"] = "密码",
["LoginButtonText"] = "登录",
["RegisterButtonText"] = "注册",
["LanguageLabel"] = "语言",
["SelectLanguageText"] = "选择语言",
["CurrentLanguageText"] = "当前语言：简体中文"
},
["en-US"] = new Dictionary<string, string>
{
["WelcomeText"] = "Welcome",
["WelcomeMessage"] = "Welcome to Localization Demo App",
["UsernameLabel"] = "Username",
["PasswordLabel"] = "Password",
["LoginButtonText"] = "Login",
["RegisterButtonText"] = "Register",
["LanguageLabel"] = "Language",
["SelectLanguageText"] = "Select Language",
["CurrentLanguageText"] = "Current Language: English"
},
["ja-JP"] = new Dictionary<string, string>
{
["WelcomeText"] = "ようこそ",
["WelcomeMessage"] = "多言語デモアプリへようこそ",
["UsernameLabel"] = "ユーザー名",
["PasswordLabel"] = "パスワード",
["LoginButtonText"] = "ログイン",
["RegisterButtonText"] = "登録",
["LanguageLabel"] = "言語",
["SelectLanguageText"] = "言語を選択",
["CurrentLanguageText"] = "現在の言語：日本語"
}
};
public string[] AvailableLanguages => new[] { "zh-CN", "en-US", "ja-JP" };
public string GetLanguageDisplayName(string code) => code switch
{
"zh-CN" => "简体中文",
"en-US" => "English",
"ja-JP" => "日本語",
_ => code
};
public void SetLanguage(string languageCode)
{
if (_translations.ContainsKey(languageCode) && _currentLanguage != languageCode)
{
_currentLanguage = languageCode;
LanguageChanged?.Invoke();
}
}
public string this[string key]
{
get
{
if (_translations.TryGetValue(_currentLanguage, out var dict) && dict.TryGetValue(key, out var value))
return value;
return key;
}
}
}MainWindowViewModel.cs
using _10_Localization.Services;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
namespace _10_Localization.ViewModels;
public partial class MainWindowViewModel : ObservableObject
{
private readonly LocalizationService _loc = LocalizationService.Instance;
[ObservableProperty]
private string _welcomeText;
[ObservableProperty]
private string _welcomeMessage;
[ObservableProperty]
private string _usernameLabel;
[ObservableProperty]
private string _passwordLabel;
[ObservableProperty]
private string _loginButtonText;
[ObservableProperty]
private string _registerButtonText;
[ObservableProperty]
private string _languageLabel;
[ObservableProperty]
private string _selectLanguageText;
[ObservableProperty]
private string _currentLanguageText;
[ObservableProperty]
private string _selectedLanguage;
[ObservableProperty]
private string _statusMessage = "";
public string[] AvailableLanguages => _loc.AvailableLanguages;
public MainWindowViewModel()
{
SelectedLanguage = _loc.CurrentLanguage;
UpdateAllTexts();
_loc.LanguageChanged += UpdateAllTexts;
}
partial void OnSelectedLanguageChanged(string value)
{
if (value == null) return;
_loc.SetLanguage(value);
}
[RelayCommand]
private void Login()
{
StatusMessage = $"{LoginButtonText} 成功";
}
[RelayCommand]
private void Register()
{
StatusMessage = $"{RegisterButtonText} 成功";
}
private void UpdateAllTexts()
{
WelcomeText = _loc["WelcomeText"];
WelcomeMessage = _loc["WelcomeMessage"];
UsernameLabel = _loc["UsernameLabel"];
PasswordLabel = _loc["PasswordLabel"];
LoginButtonText = _loc["LoginButtonText"];
RegisterButtonText = _loc["RegisterButtonText"];
LanguageLabel = _loc["LanguageLabel"];
SelectLanguageText = _loc["SelectLanguageText"];
CurrentLanguageText = _loc["CurrentLanguageText"];
}
}App.axaml
<Application xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="_10_Localization.App"> <!-- 主题 --> <Application.Styles> <FluentTheme /> </Application.Styles> <!-- 多语言资源字典 --> <Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <!-- 在这里加载语言文件 --> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources> </Application>
MainWindow.axaml
<Window xmlns="https://github.com/avaloniaui"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:vm="clr-namespace:_10_Localization.ViewModels"
x:Class="_10_Localization.MainWindow"
x:DataType="vm:MainWindowViewModel"
Title="Localization - 多语言切换演示"
Width="450"
Height="500">
<Window.DataContext>
<vm:MainWindowViewModel/>
</Window.DataContext>
<ScrollViewer>
<StackPanel Margin="30" Spacing="20">
<TextBlock Text="{Binding WelcomeText}"
FontSize="24"
FontWeight="Bold"
HorizontalAlignment="Center"/>
<Border Background="#E3F2FD" Padding="15" CornerRadius="8">
<TextBlock Text="{Binding WelcomeMessage}"
TextWrapping="Wrap"
HorizontalAlignment="Center"/>
</Border>
<Border Background="#F5F5F5" Padding="15" CornerRadius="8">
<StackPanel Spacing="15">
<StackPanel Spacing="5">
<TextBlock Text="{Binding UsernameLabel}"/>
<TextBox Watermark="{Binding UsernameLabel}"/>
</StackPanel>
<StackPanel Spacing="5">
<TextBlock Text="{Binding PasswordLabel}"/>
<TextBox PasswordChar="*"
Watermark="{Binding PasswordLabel}"/>
</StackPanel>
<StackPanel Orientation="Horizontal" Spacing="10" HorizontalAlignment="Center">
<Button Content="{Binding LoginButtonText}"
Command="{Binding LoginCommand}"
Padding="20,8"/>
<Button Content="{Binding RegisterButtonText}"
Command="{Binding RegisterCommand}"
Padding="20,8"/>
</StackPanel>
</StackPanel>
</Border>
<Border Background="#FFF3E0" Padding="15" CornerRadius="8">
<StackPanel Spacing="10">
<TextBlock Text="{Binding LanguageLabel}"
FontSize="16"
FontWeight="Bold"/>
<TextBlock Text="{Binding SelectLanguageText}"/>
<ComboBox ItemsSource="{Binding AvailableLanguages}"
SelectedItem="{Binding SelectedLanguage}"
Width="200"
HorizontalAlignment="Left">
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}">
<Binding Path="."/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
<TextBlock Text="{Binding CurrentLanguageText}"
Foreground="#6200EE"/>
</StackPanel>
</Border>
<TextBlock Text="{Binding StatusMessage}"
FontSize="14"
Foreground="#4CAF50"
HorizontalAlignment="Center"/>
<Border Background="#E8F5E9" Padding="15" CornerRadius="8">
<StackPanel Spacing="10">
<TextBlock Text="学习要点" FontWeight="Bold" Foreground="#1565C0"/>
<TextBlock Text="- 使用 ResourceDictionary 定义多语言字符串"
TextWrapping="Wrap"/>
<TextBlock Text="- 创建 LocalizationService 管理当前语言"
TextWrapping="Wrap"/>
<TextBlock Text="- 语言切换后通过事件通知所有 UI 更新"
TextWrapping="Wrap"/>
<TextBlock Text="- 可结合 ILSpy 或资源文件实现更完整方案"
TextWrapping="Wrap"/>
</StackPanel>
</Border>
</StackPanel>
</ScrollViewer>
</Window>MainWindow.axaml.cs
using Avalonia.Controls;
namespace _10_Localization;
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}效果：
