WPF 实现语言切换

 源码下载：LanguageStyle.zip

 

第一步：创建language文件夹，并创建文件（zh-cn.xaml、en-us.xaml）

zh-cn.xaml

en-us.xaml

? <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                     xmlns:sys="clr-namespace:System;assembly=mscorlib">     <sys:String x:Key="确认">confirm</sys:String>     <sys:String x:Key="取消">cancel</sys:String>     <sys:String x:Key="删除">delete</sys:String>     <sys:String x:Key="警告">warning</sys:String>     <sys:String x:Key="提醒">info</sys:String>     <sys:String x:Key="成功">success</sys:String> </ResourceDictionary>

? <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                     xmlns:sys="clr-namespace:System;assembly=mscorlib">     <sys:String x:Key="确认">确认</sys:String>     <sys:String x:Key="取消">取消</sys:String>     <sys:String x:Key="删除">删除</sys:String>     <sys:String x:Key="警告">警告</sys:String>     <sys:String x:Key="提醒">提醒</sys:String>     <sys:String x:Key="成功">成功</sys:String> </ResourceDictionary>

 

第二步：修改配置文件（App.config）

?

<appSettings>

  <add key="language" value="en-us"/>

</appSettings>

 

 第三步：App启动资源文件

?

public partial class App : Application

{

    protected override void OnStartup(StartupEventArgs e)

    {

        base.OnStartup(e);

        // 获取配置

        if(ConfigurationManager.AppSettings["language"] != null)

        {

            if(!String.IsNullOrEmpty(ConfigurationManager.AppSettings["language"]))

            {

                var requestedLanguage = String.Format("pack://application:,,,/;component/language/{0}.xaml", ConfigurationManager.AppSettings["language"]);

                var resource = Application.Current.Resources.MergedDictionaries.FirstOrDefault(rd => rd.Source != null && rd.Source.OriginalString.ToLower().Contains("language"));

                if(resource == null)

                {

                    ResourceDictionary resourceDictionary = new ResourceDictionary();

                    resourceDictionary.Source = new Uri(requestedLanguage, UriKind.RelativeOrAbsolute);

                    Application.Current.Resources.MergedDictionaries.Add(resourceDictionary);

                }

            }

        }

    }

    protected override void OnExit(ExitEventArgs e)

    {

        // 在这里处理应用程序退出逻辑

        base.OnExit(e);

    }

}

 

 第四步：选择并保存默认语言

?

public void SetLanguage(string language = "zh-cn")

{

    if (string.IsNullOrEmpty(language)) language = "zh-cn";

    // 获取当前语言

    var resourceDictionary = Application.Current.Resources.MergedDictionaries.FirstOrDefault(rd => rd.Source != null

    && rd.Source.OriginalString.ToLower().Contains("language"));

    if (resourceDictionary != null)

    {

        //移除语言

        Application.Current.Resources.MergedDictionaries.Remove(resourceDictionary);

 

        //添加语言

        string requestedLanguage = $"pack://application:,,,/;component/language/{language}.xaml";

        resourceDictionary.Source = new Uri(requestedLanguage, UriKind.RelativeOrAbsolute);

        Application.Current.Resources.MergedDictionaries.Add(resourceDictionary);

 

        // 保存配置

        var config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

        config.AppSettings.Settings["language"].Value = language;

        config.Save(ConfigurationSaveMode.Modified);

        ConfigurationManager.RefreshSection(config.AppSettings.SectionInformation.Name);

 

        MessageBox.Show("保存成功");

    }

}