<VoiceCommands xmlns="http://schemas.microsoft.com/voicecommands/1.1">
    <!-- The CommandSet Name is used to programmatically access the CommandSet -->
    <CommandSet xml:lang="zh-CN" Name="chineseCommands">
        <!-- The CommandPrefix provides an alternative to your full app name for invocation -->
        <CommandPrefix> 微软 文档 </CommandPrefix>
        <!-- The CommandSet Example appears in the global help alongside your app name -->
        <Example> 搜索 构造 函数 </Example>

        <Command Name="MSDNSearch">
            <!-- The Command example appears in the drill-down help page for your app -->
            <Example> 搜索 构造 函数‘ </Example>

            <!-- ListenFor elements provide ways to say the command, including references to 
            {PhraseLists} and {PhraseTopics} as well as [optional] words -->
            <ListenFor> 查找 {dictatedSearchTerms} </ListenFor>
            <ListenFor> 搜 {dictatedSearchTerms} </ListenFor>
            <ListenFor> 搜索  {dictatedSearchTerms} </ListenFor>
            <ListenFor> 查 {dictatedSearchTerms} </ListenFor>
            <ListenFor> 找 {dictatedSearchTerms} </ListenFor>

          <!--Feedback provides the displayed and spoken text when your command is triggered -->
            <Feedback> 查找 MSDN... </Feedback>

            <!-- Navigate specifies the desired page or invocation destination for the Command-->
            <Navigate Target="MainPage.xaml" />
        </Command>

        <Command Name="MSDNNaturalLanguage">
            <Example> 我 想 去 Windows 手机 开发 中心 </Example>
            <ListenFor> {naturalLanguage} </ListenFor>
            <Feedback> 启动 MSDN... </Feedback>
            <Navigate Target="MainPage.xaml" />
        </Command>

        <PhraseTopic Label="dictatedSearchTerms" Scenario="Search">
            <Subject> MSDN </Subject>
        </PhraseTopic>

        <PhraseTopic Label="naturalLanguage" Scenario="Natural Language">
            <Subject> MSDN </Subject>
        </PhraseTopic>

    </CommandSet>
</VoiceCommands>

        /// <summary>
        /// Installs the Voice Command Definition (VCD) file associated with the application.
        /// Based on OS version, installs a separate document based on version 1.0 of the schema or version 1.1.
        /// </summary>
        private async void InstallVoiceCommands()
        {
            const string wp80vcdPath = "ms-appx:///VoiceCommandDefinition_8.0.xml";
            const string wp81vcdPath = "ms-appx:///VoiceCommandDefinition_8.1.xml";
            const string chineseWp80vcdPath = "ms-appx:///ChineseVoiceCommandDefinition_8.0.xml";
            const string chineseWp81vcdPath = "ms-appx:///ChineseVoiceCommandDefinition_8.1.xml";

            try
            {
                bool using81orAbove = ((Environment.OSVersion.Version.Major >= 8)
                    && (Environment.OSVersion.Version.Minor >= 10));

                string vcdPath = using81orAbove ? wp81vcdPath : wp80vcdPath;
                if (InstalledSpeechRecognizers.Default.Language.Equals("zh-CN", StringComparison.InvariantCultureIgnoreCase))
                {
                    vcdPath = using81orAbove ? chineseWp81vcdPath : chineseWp80vcdPath;
                }

                Uri vcdUri = new Uri(vcdPath);
                await VoiceCommandService.InstallCommandSetsFromFileAsync(vcdUri);
            }
            catch (Exception vcdEx)
            {
                Dispatcher.BeginInvoke(() =>
                {
                    MessageBox.Show(String.Format(
                        AppResources.VoiceCommandInstallErrorTemplate, vcdEx.HResult, vcdEx.Message));
                });
            }
        }

        /// <summary>
        /// Takes specific action for a retrieved VoiceCommand name.
        /// </summary>
        /// <param name="voiceCommandName"> the command name triggered to activate the application </param>
        private void HandleVoiceCommand(string voiceCommandName)
        {
            // Voice Commands can be typed into Cortana; when this happens, "voiceCommandMode" is populated with the
            // "textInput" value. In these cases, we‘ll want to behave a little differently by not speaking back.
            bool typedVoiceCommand = (NavigationContext.QueryString.ContainsKey("commandMode") 
                && (NavigationContext.QueryString["commandMode"] == "text"));

            string phraseTopicContents = null;
            bool doSearch = false;

            switch (voiceCommandName)
            {
                case "MSDNNaturalLanguage":
                    if (NavigationContext.QueryString.TryGetValue("naturalLanguage", out phraseTopicContents)
                        && !String.IsNullOrEmpty(phraseTopicContents))
                    {
                        // We‘ll try to process the input as a natural language query; if we‘re successful, we won‘t
                        // fall back into searching, since the query will have already been handled.
                        doSearch = TryHandleNlQuery(phraseTopicContents, typedVoiceCommand);
                    }
                    break;
                case "MSDNSearch":
                    // The user explicitly asked to search, so we‘ll attempt to retrieve the query.
                    NavigationContext.QueryString.TryGetValue("dictatedSearchTerms", out phraseTopicContents);
                    doSearch = true;
                    break;
            }

            if (doSearch)
            {
                HandleSearchQuery(phraseTopicContents, typedVoiceCommand);
            }
        }