问如何将两条记录写入NFC标签，一个自定义URI和一个文本数据？

EN

using System.Diagnostics;
using System.Windows;
using System.Windows.Navigation;
using Microsoft.Phone.Controls;
using Windows.Networking.Proximity;
using NdefLibrary.Ndef;
using System.Runtime.InteropServices.WindowsRuntime;
using Microsoft.Phone.Tasks;

namespace NfcShare
    {
    public partial class MainPage : PhoneApplicationPage
        {
        private ProximityDevice _device;
        long _subscribedMessageId;

        // Constructor
        public MainPage()
            {
            InitializeComponent();

            // -> Initialize proximity device
            _device = ProximityDevice.GetDefault();

            TxtStatus.Text = "Initialized";
            }

        private void LogStatusMessage( string newStatus )
            {
            // Update the status output UI element in the UI thread
            // (some of the callbacks are in a different thread that wouldn't be allowed
            // to modify the UI thread)
            Dispatcher.BeginInvoke( () =>
                                        {
                                            if ( TxtStatus != null ) TxtStatus.Text = newStatus;
                                        } );
            }


        private void MessageWrittenHandler( ProximityDevice sender, long messageId )
            {
            LogStatusMessage( "Message published!" );
            _device.StopPublishingMessage( messageId );
            }

        // -----------------------------------------------------------------------------------
        // Custom URI Scheme

        // -> Override OnNavigatedTo() and check QueryString
        protected override void OnNavigatedTo( NavigationEventArgs e )
            {
            base.OnNavigatedTo( e );

            if ( NavigationContext.QueryString.ContainsKey( "ms_nfp_launchargs" ) )
                {
                LogStatusMessage( "Launched Args: " + NavigationContext.QueryString[ "ms_nfp_launchargs" ] );
                }
            } 

        // -----------------------------------------------------------------------------------
        // Write tags 
        private void BtnWriteTag_Click( object sender, RoutedEventArgs e )
            {
            NdefUriRecord rec1 = new NdefUriRecord
                                    {
                                        Uri = "nfcshare:Hello+World"
                                    };

            NdefTextRecord rec2 = new NdefTextRecord();
            rec2.Text = "Record 2";

            NdefMessage msg = new NdefMessage();

            msg.Add( rec1 );
            msg.Add( rec2 );

            _device.PublishBinaryMessage(
                "NDEF:WriteTag",
                msg.ToByteArray().AsBuffer(),
                MessageWrittenHandler );

            LogStatusMessage( "Publishing message ..." );
            } 

        // -----------------------------------------------------------------------------------
        // Read tags
        private void BtnSubscribeTag_Click( object sender, RoutedEventArgs e )
            {
            _subscribedMessageId = _device.SubscribeForMessage( "NDEF", MessageReceivedHandler );
            LogStatusMessage( "Subscribed for tag ..." );
            }

        private void MessageReceivedHandler( ProximityDevice sender, ProximityMessage message )
            {
            var rawMsg = message.Data.ToArray();
            var ndefMessage = NdefMessage.FromByteArray( rawMsg );

            // Loop over all records contained in the NDEF message
            foreach ( NdefRecord record in ndefMessage )
                {
                if ( NdefUriRecord.IsRecordType( record ) )
                    {
                    // Convert and extract URI info
                    var uriRecord = new NdefUriRecord( record );
                    LogStatusMessage( "Read tag, URI: " + uriRecord.Uri );
                    }
                else if ( NdefTextRecord.IsRecordType( record ) )
                    {
                    // Convert and extract URI info
                    var textRecord = new NdefTextRecord( record );
                    LogStatusMessage( "Read tag, Text: " + textRecord.Text );
                    }
                }
            // Only read one tag
            _device.StopSubscribingForMessage( _subscribedMessageId );
            }
        }
    }