| public StoreAsync ( ) : DataWriterStoreOperation | ||
| Результат | DataWriterStoreOperation | |
private async void Update()
{
var writer1 = new BarcodeWriter
{
Format = BarcodeFormat.QR_CODE,
Options = new ZXing.Common.EncodingOptions
{
Height = 200,
Width = 200
},
};
var image = writer1.Write(Text);//Write(text);
using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
{
using (DataWriter writer = new DataWriter(ms.GetOutputStreamAt(0)))
{
writer.WriteBytes(image);
await writer.StoreAsync();
}
var output = new BitmapImage();
await output.SetSourceAsync(ms);
ImageSource = output;
}
}
private async Task WriteToOutputStreamAsync(byte[] bytes)
{
if (_socket == null) return;
_writer = new DataWriter(_socket.OutputStream);
_writer.WriteBytes(bytes);
var debugString = UTF8Encoding.UTF8.GetString(bytes, 0, bytes.Length);
try
{
await _writer.StoreAsync();
await _socket.OutputStream.FlushAsync();
_writer.DetachStream();
_writer.Dispose();
}
catch (Exception exception)
{
// If this is an unknown status it means that the error if fatal and retry will likely fail.
if (global::Windows.Networking.Sockets.SocketError.GetStatus(exception.HResult) == global::Windows.Networking.Sockets.SocketErrorStatus.Unknown)
{
// TODO abort any retry attempts on Unity side
throw;
}
}
}
protected override async void OnShareTargetActivated(ShareTargetActivatedEventArgs args)
{
if (args.ShareOperation.Data.Contains(StandardDataFormats.WebLink))
{
Uri uri = await args.ShareOperation.Data.GetWebLinkAsync();
if (null != uri)
try
{
using (var socket = new MessageWebSocket())
{
socket.Control.MessageType = SocketMessageType.Utf8;
await socket.ConnectAsync(new Uri("ws://" + settings["Host"].ToString() + ":" + settings["Port"].ToString()));
using (var writer = new DataWriter(socket.OutputStream))
{
writer.WriteString(uri.AbsoluteUri);
await writer.StoreAsync();
args.ShareOperation.ReportCompleted();
}
}
}
catch
{
show();
}
}
}
private async void WriteFile(string s)
{
Windows.Storage.StorageFolder storageFolder =
Windows.Storage.ApplicationData.Current.LocalFolder;
Windows.Storage.StorageFile sampleFile =
await storageFolder.GetFileAsync("dsp_data.txt");
try
{
var stream = await sampleFile.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
using (var outputStream = stream.GetOutputStreamAt(stream.Size))
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
{
dataWriter.WriteString(s);
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
}
}
stream.Dispose();
}
catch (Exception E) { }
}
public static async Task<bool> ConnectAsync()
{
if (imageComparisonServer != null)
return true;
try
{
imageComparisonServer = new StreamSocket();
await imageComparisonServer.ConnectAsync(new HostName(ParadoxImageServerHost), ParadoxImageServerPort.ToString());
// Send initial parameters
using (var memoryStream = new MemoryStream())
{
var binaryWriter = new BinaryWriter(memoryStream);
ImageTestResultConnection.Write(binaryWriter);
var dataWriter = new DataWriter(imageComparisonServer.OutputStream);
dataWriter.WriteBytes(memoryStream.ToArray());
await dataWriter.StoreAsync();
await dataWriter.FlushAsync();
dataWriter.DetachStream();
}
return true;
}
catch (Exception)
{
imageComparisonServer = null;
return false;
}
}
public object Convert(object value, Type targetType, object parameter, string language)
{
if (value != null)
{
byte[] bytes = (byte[])value;
BitmapImage myBitmapImage = new BitmapImage();
if (bytes.Count() > 0)
{
InMemoryRandomAccessStream stream = new InMemoryRandomAccessStream();
DataWriter writer = new DataWriter(stream.GetOutputStreamAt(0));
writer.WriteBytes(bytes);
writer.StoreAsync().GetResults();
myBitmapImage.SetSource(stream);
}
else
{
myBitmapImage.UriSource = new Uri("ms-appx:///Assets/firstBackgroundImage.jpg");
}
return myBitmapImage;
}
else
{
return new BitmapImage();
}
}
public async void SendMessage(string msg)
{
HostName hostName;
try
{
hostName = new HostName("localhost");
}
catch (ArgumentException)
{
return;
}
StreamSocket socket;
try
{
using (socket = new StreamSocket())
{
await socket.ConnectAsync(hostName, port2);
//CoreApplication.Properties.Add("connected", null);
DataWriter dw = new DataWriter(socket.OutputStream);
dw.WriteString(msg);
await dw.StoreAsync();
}
}
catch
{
//break;
}
}
public async Task Send(WemosMessage msg)
{
if (msg != null)
{
var str = msg.ToDto();
if (!string.IsNullOrEmpty(str))
{
try
{
// GetOutputStreamAsync can be called multiple times on a single DatagramSocket instance to obtain
// IOutputStreams pointing to various different remote endpoints. The remote hostname given to
// GetOutputStreamAsync can be a unicast, multicast or broadcast address.
IOutputStream outputStream = await listenerSocket.GetOutputStreamAsync(new HostName(remoteMulticastAddress), remoteService);
DataWriter writer = new DataWriter(outputStream);
writer.WriteString(str);
await writer.StoreAsync();
}
catch (Exception exception)
{
// If this is an unknown status it means that the error is fatal and retry will likely fail.
if (SocketError.GetStatus(exception.HResult) == SocketErrorStatus.Unknown)
throw;
//rootPage.NotifyUser("Send failed with error: " + exception.Message, NotifyType.ErrorMessage);
}
}
}
}
public object Convert(object value, Type targetType, object parameter, string language)
{
if (value != null && value is byte[])
{
//WriteableBitmap bitmap = new WriteableBitmap(100, 100);
//System.IO.Stream bitmapStream = null;
//bitmapStream = bitmap.PixelBuffer.AsStream();
//bitmapStream.Position = 0;
//bitmapStream.Write(value as byte[], 0, (value as byte[]).Length);
//bitmapStream.Flush();
InMemoryRandomAccessStream randomAccessStream = new InMemoryRandomAccessStream();
DataWriter writer = new DataWriter(randomAccessStream.GetOutputStreamAt(0));
writer.WriteBytes(value as byte[]);
var x = writer.StoreAsync().AsTask().Result;
BitmapImage image = new BitmapImage();
image.SetSource(randomAccessStream);
return image;
}
return null;
}
private async void OnWrite(Object sender, RoutedEventArgs e)
{
// 获取本地目录的引用
StorageFolder local = ApplicationData.Current.LocalFolder;
// 创建新文件
StorageFile newFIle = await local.CreateFileAsync("demo.dat", CreationCollisionOption.ReplaceExisting);
// 打开文件流
using(IRandomAccessStream stream = await newFIle.OpenAsync(FileAccessMode.ReadWrite))
{
// 实例化 DataWriter
DataWriter dw = new DataWriter(stream);
// 设置默认编码格式
dw.UnicodeEncoding = UnicodeEncoding.Utf8;
// 写入 bool 值
dw.WriteBoolean(true);
// 写入日期值
DateTime dt = new DateTime(2010, 8, 21);
dw.WriteDateTime(dt);
// 写入字符串
string str = "测试文本";
// 计算字符串长度
uint len = dw.MeasureString(str);
// 先写入字符串的长的
dw.WriteUInt32(len);
// 再写入字符串
dw.WriteString(str);
// 以下方法必须调用
await dw.StoreAsync();
// 解除 DataWriter 与流的关联
dw.DetachStream();
dw.Dispose();
}
MessageDialog msgDlg = new MessageDialog("保存成功。");
await msgDlg.ShowAsync();
}
public object Convert(object value, Type targetType, object parameter, string language)
{
if (!(value is byte[]))
{
return null;
}
using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
{
// Writes the image byte array in an InMemoryRandomAccessStream
// that is needed to set the source of BitmapImage.
using (DataWriter writer = new DataWriter(ms.GetOutputStreamAt(0)))
{
writer.WriteBytes((byte[])value);
// The GetResults here forces to wait until the operation completes
// (i.e., it is executed synchronously), so this call can block the UI.
writer.StoreAsync().GetResults();
}
var image = new BitmapImage();
image.SetSource(ms);
return image;
}
}
public async Task SendAsync(string text)
{
try
{
// DataWriter to send message to client
var writer = new DataWriter(_socket.OutputStream);
//Encrypt message
byte[] data = Cryptographic.Encrypt(text, "123");
//Write Lenght message in buffer
writer.WriteInt32(data.Length);
//Write message in buffer
writer.WriteBytes(data);
//Send buffer
await writer.StoreAsync();
//Clear buffer
await writer.FlushAsync();
}
catch (Exception e)
{
InvokeOnError(e.Message);
}
}
public async static void GetImageSize(this Stream imageStream)
{
var image = new BitmapImage();
byte[] imageBytes = Convert.FromBase64String(imageStream.ToBase64String());
MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
ms.Write(imageBytes, 0, imageBytes.Length);
using (InMemoryRandomAccessStream stream = new InMemoryRandomAccessStream())
{
using (DataWriter writer = new DataWriter(stream.GetOutputStreamAt(0)))
{
try
{
writer.WriteBytes(imageBytes);
await writer.StoreAsync();
}
catch (Exception)
{
// ignored
}
}
try
{
await image.SetSourceAsync(stream);
}
catch (Exception)
{
// ignored
}
}
ImageSize = new Size(image.PixelWidth, image.PixelHeight);
}
/// <summary>
/// Writes a string to a text file.
/// </summary>
/// <param name="text">The text to write.</param>
/// <param name="fileName">Name of the file.</param>
/// <param name="folder">The folder.</param>
/// <param name="options">
/// The enum value that determines how responds if the fileName is the same
/// as the name of an existing file in the current folder. Defaults to ReplaceExisting.
/// </param>
/// <returns></returns>
public static async Task SaveAsync(
this string text,
string fileName,
StorageFolder folder = null,
CreationCollisionOption options = CreationCollisionOption.ReplaceExisting)
{
folder = folder ?? ApplicationData.Current.LocalFolder;
var file = await folder.CreateFileAsync(
fileName,
options);
using (var fs = await file.OpenAsync(FileAccessMode.ReadWrite))
{
using (var outStream = fs.GetOutputStreamAt(0))
{
using (var dataWriter = new DataWriter(outStream))
{
if (text != null)
dataWriter.WriteString(text);
await dataWriter.StoreAsync();
dataWriter.DetachStream();
}
await outStream.FlushAsync();
}
}
}
private async Task <WriteableBitmap> LoadWritableBitmap(string path)
{
var file = await StorageFile.GetFileFromPathAsync(path);
var data = await FileIO.ReadBufferAsync(file);
var ms = new InMemoryRandomAccessStream();
var dw = new Windows.Storage.Streams.DataWriter(ms);
dw.WriteBuffer(data);
await dw.StoreAsync();
ms.Seek(0);
var bm = new BitmapImage();
await bm.SetSourceAsync(ms);
var wb = new WriteableBitmap(bm.PixelWidth, bm.PixelHeight);
ms.Seek(0);
await wb.SetSourceAsync(ms);
return(wb);
}
public async void PerformPeerDiscovery()
{
timer.Interval = new TimeSpan(0, 0, 5);
timer.Start();
if (socket == null)
{
socket = new DatagramSocket();
socket.MessageReceived += socket_MessageReceived;
try
{
await socket.BindEndpointAsync(null, "22002");
}
catch
{
// Swallow any already bound exceptions!
}
}
using (var outputStream = await socket.GetOutputStreamAsync(new HostName("230.0.0.1"), "22003"))
{
using (DataWriter wr = new DataWriter(outputStream))
{
wr.WriteString("**BECHARMING DISCOVERY**");
await wr.FlushAsync();
await wr.StoreAsync();
}
}
}
public static async Task WriteFileAsync(string fileName, byte[] content)
{
try
{
var file = await ApplicationData.Current.LocalFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
using (var fileStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
using (var outputStream = fileStream.GetOutputStreamAt(0))
{
using (var dataWriter = new DataWriter(outputStream))
{
dataWriter.WriteBytes(content);
await dataWriter.StoreAsync();
dataWriter.DetachStream();
}
await outputStream.FlushAsync();
}
}
}
catch (Exception exception)
{
SnazzyDebug.WriteLine(exception);
}
}
public async void ProccesImage(StorageFile imageFile)
{
var data = await FileIO.ReadBufferAsync(imageFile);
// create a stream from the file
var ms = new InMemoryRandomAccessStream();
var dw = new DataWriter(ms);
dw.WriteBuffer(data);
await dw.StoreAsync();
ms.Seek(0);
// find out how big the image is, don't need this if you already know
var bm = new BitmapImage();
await bm.SetSourceAsync(ms);
// create a writable bitmap of the right size
var wb = new WriteableBitmap(bm.PixelWidth, bm.PixelHeight);
ms.Seek(0);
// load the writable bitpamp from the stream
await wb.SetSourceAsync(ms);
Bitmap bmp = (Bitmap)wb;
//var filter1 = Grayscale.CommonAlgorithms.BT709;
//bmp = filter1.Apply(bmp);
wb = (WriteableBitmap)bmp;
var file = await this.WriteableBitmapToStorageFile(wb, FileFormat.Jpeg);
}
async void BeginReadCCTV()
{
IsBeginRead = true;
ISExit = false;
tblCCTV cctvinfo=null;
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
cctvinfo = this.DataContext as tblCCTV;
});
// client=new HttpClient();
while (!ISExit)
{
try
{
Uri uri = new Uri("http://192.192.161.3/" + cctvinfo.REF_CCTV_ID.Trim() + ".jpg?" + rnd.Next(), UriKind.Absolute);
using (httpClient = new HttpClient())
{
httpClient.Timeout = TimeSpan.FromSeconds(0.5);
var contentBytes = await httpClient.GetByteArrayAsync(uri);
var ims = new InMemoryRandomAccessStream();
var dataWriter = new DataWriter(ims);
dataWriter.WriteBytes(contentBytes);
await dataWriter.StoreAsync();
//ims.seak 0
ims.Seek(0 );
await Dispatcher.RunAsync( Windows.UI.Core.CoreDispatcherPriority.Normal,()=>
{
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(ims );
this.imgCCTV.Source = bitmap;
imginx = (imginx + 1) % 90000;
this.RunFrameRate.Text = imginx.ToString();
});
}
}
catch (Exception ex)
{
// this.textBlock1.Text = ex.Message;
}
// BitmapImage img = new BitmapImage();
// img.SetSource(stream);
}
}
//req:
// path file exist
// m_words has words
private async void saveData(StorageFile file)
{
//Debug.Assert(path != null);
//Debug.Assert(System.IO.File.Exists(path));
Debug.Assert(m_words != null);
//StorageFile file = await StorageFile.GetFileFromPathAsync(path);
var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
var outputStream = stream.GetOutputStreamAt(0);
var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream);
foreach (var w in m_words)
{
dataWriter.WriteString(w.ToString() + "\r\n");
}
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
dataWriter.Dispose();
outputStream.Dispose();
stream.Dispose();
}
async void datagramSocket_MessageReceived(DatagramSocket sender, DatagramSocketMessageReceivedEventArgs args)
{
i++;
DataReader dataReader = args.GetDataReader();
uint length = dataReader.UnconsumedBufferLength;
string content = dataReader.ReadString(length);
Deployment.Current.Dispatcher.BeginInvoke(() =>
msgList.Children.Add(new TextBlock { Text = "服务器收到的消息：" + content }));
//HostName hostName = new HostName("localhost");
//DatagramSocket datagramSocket = new DatagramSocket();
//IOutputStream outputStream = await datagramSocket.GetOutputStreamAsync(hostName, "22112");
DataWriter writer = new DataWriter(sender.OutputStream);
writer.WriteString(content + "|" + i);
try
{
await writer.StoreAsync();
msgList.Children.Add(new TextBlock { Text = "服务器发送的消息：" + content + "|" + i });
}
catch (Exception err)
{
if (SocketError.GetStatus(err.HResult) == SocketErrorStatus.AddressAlreadyInUse)
{
}
}
}
private async void LoginButton_Click(object sender, RoutedEventArgs e)
{
if (saveLogin)
{
configSF = await storageFolder.CreateFileAsync("config.txt", Windows.Storage.CreationCollisionOption.ReplaceExisting);
var stream = await configSF.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
using (var outputStream = stream.GetOutputStreamAt(0))
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
{
string combo = Username.Text + " " + Password.Password;
IBuffer comboB = await SampleDataProtectionStream(strDescriptor, combo, encoding);
dataWriter.WriteBuffer(comboB);
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
}
}
stream.Dispose();
}
else
{
configSF = await storageFolder.CreateFileAsync("config.txt", Windows.Storage.CreationCollisionOption.ReplaceExisting);
}
}
private async void doShipping(Order order)
{
try
{
StorageFile file = await KnownFolders.DocumentsLibrary.CreateFileAsync("dispatch-" + order.OrderID.ToString() + ".txt");
if (file != null)
{
string dispatchNote = "Order Summary: " +
"\r\nOrder ID: " + order.OrderID +
"\r\nOrder Total: " + String.Format("{0:C}", order.TotalValue);
var stream = await file.OpenAsync(FileAccessMode.ReadWrite);
var writeStream = stream.GetOutputStreamAt(0);
DataWriter writer = new DataWriter(writeStream);
writer.WriteString(dispatchNote);
await writer.StoreAsync();
await writeStream.FlushAsync();
writeStream.Dispose();
}
else
{
MessageDialog dlg = new MessageDialog(String.Format("Unable to save to file: {0}", file.DisplayName), "Not saved");
dlg.ShowAsync();
}
}
catch (Exception ex)
{
MessageDialog dlg = new MessageDialog(ex.Message, "Exception");
dlg.ShowAsync();
}
}
public static async Task <Windows.UI.Xaml.Media.Imaging.BitmapImage> GetBitmapAsync(byte[] data)
{
if (data is null)
{
return(null);
}
var bitmapImage = new Windows.UI.Xaml.Media.Imaging.BitmapImage();
using (var stream = new Windows.Storage.Streams.InMemoryRandomAccessStream())
{
using (var writer = new Windows.Storage.Streams.DataWriter(stream))
{
writer.WriteBytes(data);
await writer.StoreAsync();
await writer.FlushAsync();
writer.DetachStream();
}
stream.Seek(0);
await bitmapImage.SetSourceAsync(stream);
}
return(bitmapImage);
}
public static async void init(TiSettings settings) {
if (!settings.ContainsKey("logToken") || settings["logToken"].Length == 0) {
return;
}
logToken = settings["logToken"];
multicastSocket = new DatagramSocket();
multicastSocket.MessageReceived += multicastSocket_MessageReceived;
HostName hostname = new HostName("239.6.6.6");
try {
await multicastSocket.BindServiceNameAsync("8666");
multicastSocket.JoinMulticastGroup(hostname);
IOutputStream stream = await multicastSocket.GetOutputStreamAsync(hostname, "8666");
DataWriter writer = new DataWriter(stream);
writer.WriteString("TI_WP8_LOGGER");
await writer.StoreAsync();
writer.DetachStream();
stream.Dispose();
} catch (Exception ex) {
if (SocketError.GetStatus(ex.HResult) == SocketErrorStatus.Unknown) {
throw;
}
Debug.WriteLine(ex.ToString());
}
}
public async Task<BitmapImage> Base64ToBitmapImage(string base64String)
{
BitmapImage img = new BitmapImage();
if (string.IsNullOrEmpty(base64String))
return img;
using (var ims = new InMemoryRandomAccessStream())
{
byte[] bytes = Convert.FromBase64String(base64String);
base64String = "";
using (DataWriter dataWriter = new DataWriter(ims))
{
dataWriter.WriteBytes(bytes);
bytes = null;
await dataWriter.StoreAsync();
ims.Seek(0);
await img.SetSourceAsync(ims); //not in RC
return img;
}
}
}
public async Task<bool> LocalStorage(string Path,string fileName, byte[] bytes)
{
try
{
StorageFolder localFolderStorage = ApplicationData.Current.LocalFolder;
var localFolder = await localFolderStorage.CreateFolderAsync(Path, CreationCollisionOption.OpenIfExists);
var localFile = await localFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
using (StorageStreamTransaction transaction = await localFile.OpenTransactedWriteAsync())
{
//Stream targetStream = await localFile.OpenStreamForWriteAsync(); //localFolderStorage.OpenStreamForWriteAsync(Path+"\\"+fileName, CreationCollisionOption.OpenIfExists))
DataWriter dataWriter = new DataWriter(transaction.Stream);
dataWriter.WriteBytes(bytes);
await dataWriter.StoreAsync();
//stream.CopyTo(targetStream);
// stream.Dispose();
//targetStream.Close();
}
return true;
}
// Use catch blocks to handle errors
catch (Exception err)
{
return false;
}
}
/// <summary>
/// Gets accurate time using the NTP protocol with default timeout of 45 seconds.
/// </summary>
/// <param name="timeout">Operation timeout.</param>
/// <returns>Network accurate <see cref="DateTime"/> value.</returns>
public async Task<DateTime> GetNetworkTimeAsync(TimeSpan timeout)
{
using (var socket = new DatagramSocket())
using (var ct = new CancellationTokenSource(timeout))
{
ct.Token.Register(() => _resultCompletionSource.TrySetCanceled());
socket.MessageReceived += OnSocketMessageReceived;
//The UDP port number assigned to NTP is 123
await socket.ConnectAsync(new HostName("pool.ntp.org"), "123");
using (var writer = new DataWriter(socket.OutputStream))
{
// NTP message size is 16 bytes of the digest (RFC 2030)
var ntpBuffer = new byte[48];
// Setting the Leap Indicator,
// Version Number and Mode values
// LI = 0 (no warning)
// VN = 3 (IPv4 only)
// Mode = 3 (Client Mode)
ntpBuffer[0] = 0x1B;
writer.WriteBytes(ntpBuffer);
await writer.StoreAsync();
var result = await _resultCompletionSource.Task;
return result;
}
}
}
public override async void Start()
{
if (_Started)
return;
_SequenceNumber = 1;
try
{
// Connect to the Drone
udpClient = new DatagramSocket();
await udpClient.BindServiceNameAsync(_ServiceName);
await udpClient.ConnectAsync(new HostName(DroneClient.Host), _ServiceName);
udpWriter = new DataWriter(udpClient.OutputStream);
udpWriter.WriteByte(1);
await udpWriter.StoreAsync();
_Timer = ThreadPoolTimer.CreatePeriodicTimer(new TimerElapsedHandler(timerElapsedHandler), TimeSpan.FromMilliseconds(25));
_Started = true;
}
catch (Exception)
{
Stop();
}
}
//public static async Task<bool> FileExist()
//{
// try
// {
// var folders = ApplicationData.Current.LocalFolder;
// var file = await folders.GetFileAsync(PersonalDataFileName);
// var buildingFile = await folders.GetFileAsync(BuildingDataFileName);
// if (file.Path != null)
// return false;
// else
// return true;
// }
// catch
// {
// return true;
// }
//}
//public static void SavePersonalDataToJson(AccountInfo accountInfo)
//{
// string jsonContents = JsonConvert.SerializeObject(accountInfo);
// JObject o = (JObject)JToken.FromObject(accountInfo);
//}
//public static async void SavePersonalDataToJson(AccountInfo account)
//{
// // Serialize our Product class into a string
// // Changed to serialze the List
// // Get the app data folder and create or replace the file we are storing the JSON in.
// StorageFolder localFolder = ApplicationData.Current.LocalFolder;
// StorageFile textFile = await localFolder.CreateFileAsync(PersonalDataFileName, CreationCollisionOption.ReplaceExisting);
// // Open the file...
// string jsonContents = JsonConvert.SerializeObject(account);
// using (IRandomAccessStream mysteream = await textFile.OpenAsync(FileAccessMode.ReadWrite))
// {
// using (DataWriter textWriter = new DataWriter(mysteream))
// {
// textWriter.WriteString(jsonContents);
// await textWriter.StoreAsync();
// }
// }
//}
public static async Task <bool> SavePersonalDataToJson(List <AccountInfo> list)
{
// Serialize our Product class into a string
// Changed to serialze the List
// Get the app data folder and create or replace the file we are storing the JSON in.
if (personalTextFile == null)
{
personalTextFile = await StorageFolder.CreateFileAsync(PersonalDataFileName, CreationCollisionOption.ReplaceExisting);
}
// Open the file...
string jsonContents = JsonConvert.SerializeObject(UserToUserData(list));
var stream = await personalTextFile.OpenAsync(FileAccessMode.ReadWrite);
using (var outputStream = stream.GetOutputStreamAt(0))
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
{
dataWriter.WriteString(jsonContents);
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
}
}
stream.Dispose();
return(true);
}
//</SnippetVertices>
/// <summary>
/// Fixes issue in API where textures are not saved correctly
/// </summary>
/// <param name="modelStream">3dmodel.model data</param>
/// <returns></returns>
private async Task <IRandomAccessStream> FixTextureContentType(IRandomAccessStream modelStream)
{
XDocument xmldoc = XDocument.Load(modelStream.AsStreamForRead());
var outputStream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
var writer = new Windows.Storage.Streams.DataWriter(outputStream);
writer.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
writer.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
writer.WriteString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
var text = xmldoc.ToString();
// ensure that content type is set correctly
// texture content can be either png or jpg
var replacedText = text.Replace("contenttype=\"\"", "contenttype=\"image/png\"");
writer.WriteString(replacedText);
await writer.StoreAsync();
await writer.FlushAsync();
writer.DetachStream();
return(outputStream);
}
private async Task<string> DoCommand(string command)
{
StringBuilder strBuilder = new StringBuilder();
using (StreamSocket clientSocket = new StreamSocket())
{
await clientSocket.ConnectAsync(new HostName("192.168.9.108"), "9001");
using (DataWriter writer = new DataWriter(clientSocket.OutputStream))
{
writer.WriteString(command);
await writer.StoreAsync();
writer.DetachStream();
}
using (DataReader reader = new DataReader(clientSocket.InputStream))
{
reader.InputStreamOptions = InputStreamOptions.Partial;
await reader.LoadAsync(8192);
while (reader.UnconsumedBufferLength > 0)
{
strBuilder.Append(reader.ReadString(reader.UnconsumedBufferLength));
await reader.LoadAsync(8192);
}
reader.DetachStream();
}
}
return (strBuilder.ToString());
}
public async void WriteToSerialPort(string message)
{
var writer = new DataWriter(_realDevice.OutputStream);
writer.WriteString(AddNewLine(message));
await writer.StoreAsync().AsTask();
writer.DetachStream();
}
//private uint sizeOfPixel = 4;
private async void createTile(IRandomAccessStream tileStream, Color color)
{
// Create the data writer object backed by the in-memory stream.
using (var dataWriter = new Windows.Storage.Streams.DataWriter(tileStream))
{
for (uint y = 0; y < sizeOfMapTile; y++)
{
for (uint x = 0; x < sizeOfMapTile; x++)
{
// RGBA
dataWriter.WriteByte(color.R);
dataWriter.WriteByte(color.G);
dataWriter.WriteByte(color.B);
dataWriter.WriteByte(color.A);
}
}
// Send the contents of the writer to the backing stream.
await dataWriter.StoreAsync();
// For the in-memory stream implementation we are using, the flushAsync call
// is superfluous,but other types of streams may require it.
await dataWriter.FlushAsync();
// In order to prolong the lifetime of the stream, detach it from the
// DataWriter so that it will not be closed when Dispose() is called on
// dataWriter. Were we to fail to detach the stream, the call to
// dataWriter.Dispose() would close the underlying stream, preventing
// its subsequent use by the DataReader below.
dataWriter.DetachStream();
}
}
private async void OnLoadingFile(object sender, GestureEventArgs e)
{
var city = new City
{
Name = "Leipzig",
State = "Saxony",
Country = "Germany",
Population = 550000
};
string json = JsonConvert.SerializeObject(city);
var cityFile =
await ApplicationData.Current
.LocalFolder.CreateFileAsync(
"leipzig.city",
CreationCollisionOption.ReplaceExisting);
using (var stream = await cityFile.OpenAsync(FileAccessMode.ReadWrite))
{
using (var writer = new DataWriter(stream))
{
writer.WriteString(json);
await writer.StoreAsync();
}
}
Launcher.LaunchFileAsync(cityFile);
}
public void WriteAllText(string filename, string text, Action completed)
{
StorageFolder localFolder =
ApplicationData.Current.LocalFolder;
IAsyncOperation<StorageFile> createOp =
localFolder.CreateFileAsync(filename,
CreationCollisionOption.ReplaceExisting);
createOp.Completed = (asyncInfo1, asyncStatus1) =>
{
IStorageFile storageFile = asyncInfo1.GetResults();
IAsyncOperation<IRandomAccessStream> openOp =
storageFile.OpenAsync(FileAccessMode.ReadWrite);
openOp.Completed = (asyncInfo2, asyncStatus2) =>
{
IRandomAccessStream stream = asyncInfo2.GetResults();
DataWriter dataWriter = new DataWriter(stream);
dataWriter.WriteString(text);
DataWriterStoreOperation storeOp =
dataWriter.StoreAsync();
storeOp.Completed = (asyncInfo3, asyncStatus3) =>
{
dataWriter.Dispose();
completed();
};
};
};
}
private async void WriteToStreamButton_Click(object sender, RoutedEventArgs e)
{
try
{
rootPage.ResetScenarioOutput(OutputTextBlock);
StorageFile file = rootPage.sampleFile;
if (file != null)
{
string userContent = InputTextBox.Text;
if (!String.IsNullOrEmpty(userContent))
{
using (StorageStreamTransaction transaction = await file.OpenTransactedWriteAsync())
{
using (DataWriter dataWriter = new DataWriter(transaction.Stream))
{
dataWriter.WriteString(userContent);
transaction.Stream.Size = await dataWriter.StoreAsync(); // reset stream size to override the file
await transaction.CommitAsync();
OutputTextBlock.Text = "The following text was written to '" + file.Name + "' using a stream:" + Environment.NewLine + Environment.NewLine + userContent;
}
}
}
else
{
OutputTextBlock.Text = "The text box is empty, please write something and then click 'Write' again.";
}
}
}
catch (FileNotFoundException)
{
rootPage.NotifyUserFileNotExist();
}
}
private async Task Download(string url,StorageFile file,bool cover)
{
var http = new HttpClient();
byte[] response = { };
string betterUrl = url;
if(cover)
{
var pos = betterUrl.IndexOf(".jpg");
if (pos != -1)
betterUrl = betterUrl.Insert(pos, "l");
}
//get bytes
try
{
await Task.Run(async () => response = await http.GetByteArrayAsync(betterUrl));
}
catch (Exception)
{
await Task.Run(async () => response = await http.GetByteArrayAsync(url));
}
var fs = await file.OpenStreamForWriteAsync(); //get stream
var writer = new DataWriter(fs.AsOutputStream());
writer.WriteBytes(response); //write
await writer.StoreAsync();
await writer.FlushAsync();
writer.Dispose();
}
private async Task SendMessageUsingMessageWebSocketAsync(string message)
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(m_Socket.OutputStream))
{
dataWriter.WriteString(message);
await dataWriter.StoreAsync();
dataWriter.DetachStream();
}
FlowNetworkManager.log("Sending message using MessageWebSocket: " + message);
}
private async System.Threading.Tasks.Task _SendUDPMessage(byte[] data)
{
using (var stream = await socket.GetOutputStreamAsync(new Windows.Networking.HostName(PupilSettings.Instance.connection.pupilRemoteIP), PupilSettings.Instance.connection.pupilRemotePort))
{
using (var writer = new Windows.Storage.Streams.DataWriter(stream))
{
writer.WriteBytes(data);
await writer.StoreAsync();
}
}
}
private async System.Threading.Tasks.Task _SendUDPMessage(string externalIP, string externalPort, byte[] data)
{
using (var stream = await socket.GetOutputStreamAsync(new Windows.Networking.HostName(externalIP), externalPort))
{
using (var writer = new Windows.Storage.Streams.DataWriter(stream))
{
writer.WriteBytes(data);
await writer.StoreAsync();
}
}
}
private async System.Threading.Tasks.Task SendMessage(string message, string ip, int port)
{
using (var stream = await socket.GetOutputStreamAsync(new Windows.Networking.HostName(ip), port.ToString()))
{
using (var writer = new Windows.Storage.Streams.DataWriter(stream))
{
var data = Encoding.UTF8.GetBytes(message);
writer.WriteBytes(data);
await writer.StoreAsync();
}
}
}
private async Task <int> SendAsync(byte[] inbuffer)
{
using (var writer = new Windows.Storage.Streams.DataWriter(socket.OutputStream))
{
writer.WriteBytes(inbuffer);
await writer.StoreAsync();
writer.DetachStream();
}
// hopefully true...
return(inbuffer.Length);
}
private async void cutTile(IRandomAccessStream stream, int pixeloffsetX, int pixeloffsetY, int levelOfDetail)
{
// Create the data writer object backed by the in-memory stream.
using (var dataWriter = new Windows.Storage.Streams.DataWriter(stream))
{
//dataWriter.dataWriter.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
for (int y = 0; y < sizeOfMapTile; y++)
{
for (int x = 0; x < sizeOfMapTile; x++)
{
double lat, lon = 0.0;
Microsoft.MapPoint.TileSystem.PixelXYToLatLong(pixeloffsetX + x, pixeloffsetY + y, levelOfDetail, out lat, out lon);
BasicGeoposition point = new BasicGeoposition {
Latitude = lat, Longitude = lon
};
if (PathCache.pointInPolygon(point.Longitude, point.Latitude))
{
// RGBA
dataWriter.WriteByte(ColorIn.R);
dataWriter.WriteByte(ColorIn.G);
dataWriter.WriteByte(ColorIn.B);
dataWriter.WriteByte(ColorIn.A);
}
else
{
// RGBA
dataWriter.WriteByte(ColorOut.R);
dataWriter.WriteByte(ColorOut.G);
dataWriter.WriteByte(ColorOut.B);
dataWriter.WriteByte(ColorOut.A);
}
}
}
// Send the contents of the writer to the backing stream.
await dataWriter.StoreAsync();
// For the in-memory stream implementation we are using, the flushAsync call
// is superfluous,but other types of streams may require it.
await dataWriter.FlushAsync();
// In order to prolong the lifetime of the stream, detach it from the
// DataWriter so that it will not be closed when Dispose() is called on
// dataWriter. Were we to fail to detach the stream, the call to
// dataWriter.Dispose() would close the underlying stream, preventing
// its subsequent use by the DataReader below.
dataWriter.DetachStream();
}
}
private async Task <Windows.Storage.Streams.IRandomAccessStream> toStream(Windows.Storage.Streams.IBuffer ibuffer)
{
var stream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
var outputStream = stream.GetOutputStreamAt(0);
var datawriter = new Windows.Storage.Streams.DataWriter(outputStream);
datawriter.WriteBuffer(ibuffer);
await datawriter.StoreAsync();
await outputStream.FlushAsync();
return(stream);
}
/// <summary>
/// Restores the applications data using a backup from the current user's OneDrive.
/// <para>Note: Application requires restart after restoring data</para>
/// </summary>
/// <param name="itemId">Unique item identifier within a DriveItem (i.e., a folder/file facet).</param>
/// <param name="filename">Name of the datafile.</param>
/// <returns></returns>
public static async Task RestoreFileFromOneDriveAsync(string itemId, string dataFilename)
{
try
{
// Local storage folder
Windows.Storage.StorageFolder storageFolder =
Windows.Storage.ApplicationData.Current.LocalFolder;
// Our local ktdatabase.db file
Windows.Storage.StorageFile originalDataFile =
await storageFolder.GetFileAsync(dataFilename);
// Stream for the backed up data file
var backedUpFileStream = await GraphClient.Me.Drive.Items[itemId].ItemWithPath(dataFilename).Content
.Request()
.GetAsync();
// Backed up file
var backedUpFile = await storageFolder.CreateFileAsync("temp", CreationCollisionOption.ReplaceExisting);
var newStream = await backedUpFile.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
// Write data to new file
using (var outputStream = newStream.GetOutputStreamAt(0))
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
{
var buffer = backedUpFileStream.ToByteArray();
dataWriter.WriteBytes(buffer);
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
}
}
// Copy and replace local file
await backedUpFile.CopyAsync(storageFolder, dataFilename, NameCollisionOption.ReplaceExisting);
}
catch (ServiceException ex)
{
if (ex.StatusCode == HttpStatusCode.Forbidden)
{
Console.WriteLine($"Access Denied: {ex.Message}");
}
Console.WriteLine($"Service Exception, Error uploading file to signed-in users one drive: {ex.Message}");
// return null;
}
}
/// <summary>
/// Send a message to the server.
/// This message is specified in the JsonObject message.
/// The byteorder of the send message is LittleEndian and the encoding is Utf8.
/// </summary>
/// <param name="message">The message to be send.</param>
/// <returns>A boolean that indicates that the message was succesfully send.</returns>
public async Task <bool> SendMessage(JsonObject message)
{
//Check if the connector is connected. If not, call the Connect() function.
if (!isConnected)
{
await Connect();
}
//Write the message to the server.
//Code used from https://docs.microsoft.com/en-us/uwp/api/windows.storage.streams.datawriter
try
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(socket.OutputStream))
{
dataWriter.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
dataWriter.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
// Parse the input stream and write each element separately.
//Get the string version of the json object.
var stringToSend = message.ToString();
//Get the length of the stream, so the server knows how much data was send.
uint inputElementSize = dataWriter.MeasureString(stringToSend);
dataWriter.WriteUInt32(inputElementSize);
dataWriter.WriteString(stringToSend);
Debug.WriteLine("Wrote" + stringToSend);
Debug.WriteLine("Lenght:" + inputElementSize);
// Send the contents of the writer to the backing stream.
await dataWriter.StoreAsync();
// For the in-memory stream implementation we are using, the flushAsync call
// is superfluous,but other types of streams may require it.
await dataWriter.FlushAsync();
// In order to prolong the lifetime of the stream, detach it from the
// DataWriter so that it will not be closed when Dispose() is called on
// dataWriter. Were we to fail to detach the stream, the call to
// dataWriter.Dispose() would close the underlying stream, preventing
// its subsequent use by the DataReader below.
dataWriter.DetachStream();
return(true);
}
}
catch
{
//TODO on error?
throw;
}
}
public async void WriteToSocketUsingReader(IBuffer buffer)
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(socket.OutputStream))
{
dataWriter.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
dataWriter.WriteUInt32(buffer.Length);
dataWriter.WriteBuffer(buffer);
await dataWriter.StoreAsync();
await dataWriter.FlushAsync();
dataWriter.DetachStream();
}
}
// send to external IP and external port
private async System.Threading.Tasks.Task SendMessageUDP(string message)
{
using (var stream = await socket.GetOutputStreamAsync(new Windows.Networking.HostName(externalIP), externalPort))
{
using (var writer = new Windows.Storage.Streams.DataWriter(stream))
{
var data = Encoding.UTF8.GetBytes(message);
writer.WriteBytes(data);
await writer.StoreAsync();
Debug.Log("Sent: " + message);
}
}
}
/// <summary>
/// Send the given data to the server using the established connection
public async void SendString(string message)
{
DatagramSocket socket = new DatagramSocket();
await socket.ConnectAsync(new HostName(ServerIP), ConnectionPort.ToString());
using (var writer = new Windows.Storage.Streams.DataWriter(socket.OutputStream))
{
var data = Encoding.UTF8.GetBytes(message);
//writer.WriteBytes(data);
writer.WriteString(message);
await writer.StoreAsync();
//Debug.Log("Sent: " + message);
}
}
private async void send_data(string dataToSend)
{
Debug.Log("sending message: " + dataToSend);
using (var dataWriter = new Windows.Storage.Streams.DataWriter(streamSocket.OutputStream)){
dataWriter.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
dataWriter.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
dataWriter.WriteString(dataToSend);
await dataWriter.StoreAsync();
await dataWriter.FlushAsync();
dataWriter.DetachStream();
}
Debug.Log("message sent");
}
/// <summary>
/// 指定範囲のキャプチャ画像をSoftwareBitmap型として得る
/// </summary>
/// <param name="left">キャプチャ範囲の左端端x座標</param>
/// <param name="top">キャプチャ範囲の左端端y座標</param>
/// <param name="height">キャプチャ範囲の高さ</param>
/// <param name="width">キャプチャ範囲の幅</param>
/// <returns>指定された範囲のキャプチャ画像</returns>
public static async Task <SoftwareBitmap> CaptureAsSoftwareBitmap(int left, int top, int height, int width)
{
//ビットマップの保持領域を確保
Bitmap partialCapture = new Bitmap(width, height);
//描画インターフェイスの設定
Graphics draw = Graphics.FromImage(partialCapture);
//画面全体をコピーする
draw.CopyFromScreen(
left,
top,
0, 0,
partialCapture.Size
);
//解放
draw.Dispose();
MemoryStream memStream = new MemoryStream();
partialCapture.Save(memStream, ImageFormat.Bmp);
SoftwareBitmap softwareBitmap;
using (var randomAccessStream = new UwpInMemoryRandomAccessStream())
{
using (var outputStream = randomAccessStream.GetOutputStreamAt(0))
using (var writer = new UwpDataWriter(outputStream))
{
writer.WriteBytes(memStream.ToArray());
await writer.StoreAsync();
await outputStream.FlushAsync();
}
// IRandomAccessStreamをSoftwareBitmapに変換
// （ここはUWP APIのデコーダーを使う）
var decoder = await UwpBitmapDecoder.CreateAsync(randomAccessStream);
softwareBitmap = await decoder.GetSoftwareBitmapAsync(UwpBitmapPixelFormat.Bgra8, UwpBitmapAlphaMode.Premultiplied);
}
return(softwareBitmap);
}
public static async Task WriteFile(string filename, string contents)
{
var localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
var folder = await localFolder.CreateFolderAsync("DataCache", Windows.Storage.CreationCollisionOption.OpenIfExists);
var file = await folder.CreateFileAsync(filename, Windows.Storage.CreationCollisionOption.ReplaceExisting);
var fs = await file.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
fs.Seek(fs.Size);
var outStream = fs.GetOutputStreamAt(0);
var dataWriter = new Windows.Storage.Streams.DataWriter(outStream);
dataWriter.WriteString(contents);
await dataWriter.StoreAsync();
dataWriter.DetachStream();
await outStream.FlushAsync();
}
private async Task PlaceIconAsync(string tag, double probability, Rect boundingBox)
{
if (probability < 0.4)
{
foreach (var stroke in _sessionStrokes)
{
_allStrokes.Add(stroke);
}
}
else
{
var icon = await GetIconFileAsync(tag);
if (icon == null)
{
return;
}
var bytes = await FileIO.ReadBufferAsync(icon);
var ms = new InMemoryRandomAccessStream();
var dw = new Windows.Storage.Streams.DataWriter(ms);
dw.WriteBuffer(bytes);
await dw.StoreAsync();
ms.Seek(0);
var bm = new BitmapImage();
await bm.SetSourceAsync(ms);
var wb = new WriteableBitmap(bm.PixelWidth, bm.PixelHeight);
ms.Seek(0);
await wb.SetSourceAsync(ms);
var newBitmap = wb.Resize((int)boundingBox.Width, (int)boundingBox.Height, WriteableBitmapExtensions.Interpolation.Bilinear);
var image = new Image();
image.Source = newBitmap;
Canvas.SetTop(image, boundingBox.Top);
Canvas.SetLeft(image, boundingBox.Left);
iconCanvas.Children.Add(image);
}
}
//
public async static void WriteTextFileAsync(string filename, string content)
{
var storageFolder = ApplicationData.Current.LocalFolder;
var textFile = await storageFolder.CreateFileAsync(filename, CreationCollisionOption.OpenIfExists);
var textStream = await textFile.OpenAsync(FileAccessMode.ReadWrite);
using (var outputStream = textStream.GetOutputStreamAt(textStream.Size))
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
{
dataWriter.WriteString("\n" + content);
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
}
}
textStream.Dispose();
}
// ========================================================================= Class Members =========================================================== //
/// <summary>
/// Sends message to destination port
/// </summary>
/// <param name="message">string to send</param>
#if NETFX_CORE
public async Task Send(string message)
{
try
{
using (var stream = await _impl.GetOutputStreamAsync(new Windows.Networking.HostName(destIP), destPortStr))
{
using (var writer = new Windows.Storage.Streams.DataWriter(stream))
{
var data = Encoding.UTF8.GetBytes(message);
writer.WriteBytes(data);
await writer.StoreAsync();
}
}
}
catch (Exception e)
{
Debug.Log(TAG + " SendMessageUDP exception:\n" + e.ToString());
}
private async Task updateImage(Image cameraImage, string url)
{
// Download the image into memory as a stream
System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();
System.Net.Http.HttpResponseMessage imageResponse = await client.GetAsync(url);
InMemoryRandomAccessStream randomAccess =
new Windows.Storage.Streams.InMemoryRandomAccessStream();
DataWriter writer =
new Windows.Storage.Streams.DataWriter(randomAccess.GetOutputStreamAt(0));
writer.WriteBytes(await imageResponse.Content.ReadAsByteArrayAsync());
await writer.StoreAsync();
BitmapImage bit = new BitmapImage();
await bit.SetSourceAsync(randomAccess);
cameraImage.Source = bit;
}
public async void SaveASync(T Obj, string FileName)
{
FileName = FileName + ".xml";
try
{
if (Obj != null)
{
StorageFile file = null;
StorageFolder folder = GetFolder(storageType);
file = await folder.CreateFileAsync(FileName, CreationCollisionOption.ReplaceExisting);
DataContractJsonSerializer ser = new DataContractJsonSerializer(Obj.GetType());
MemoryStream ms = new MemoryStream();
ser.WriteObject(ms, Obj);
var bytes = ms.ToArray();
var contents = UTF8Encoding.UTF8.GetString(bytes, 0, bytes.Length);
using (var writeStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
//Stream outStream = Task.Run(() => writeStream.AsStreamForWrite()).Result;
//serializer.Serialize(outStream, Obj);
using (var outStream = writeStream.GetOutputStreamAt(0))
{
using (var dataWriter = new Windows.Storage.Streams.DataWriter(outStream))
{
dataWriter.WriteString(contents);
await dataWriter.StoreAsync();
dataWriter.DetachStream();
await outStream.FlushAsync();
}
}
}
}
}
catch (Exception)
{
throw;
}
}
private async Task <IRandomAccessStream> FixTextureContentType(IRandomAccessStream modelStream)
{
XDocument xmldoc = XDocument.Load(modelStream.AsStreamForRead());
var outputStream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
var writer = new Windows.Storage.Streams.DataWriter(outputStream);
writer.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
writer.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
var text = xmldoc.ToString();
var replacedText = text.Replace("contenttype=\"\"", "contenttype=\"image/png\"");
writer.WriteString(replacedText);
await writer.StoreAsync();
await writer.FlushAsync();
writer.DetachStream();
return(outputStream);
}
async private Task <int> SaveXMLDoc(XmlDocument xdoc, StorageFile file)
{
using (var stream = await file.OpenStreamForWriteAsync())
{
stream.SetLength(0);
}
IRandomAccessStream existingFileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
using (IOutputStream outputStream = existingFileStream.GetOutputStreamAt(0))
{
using (DataWriter dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
{
dataWriter.WriteString(CreateXMLStringWithNewlines(ref xdoc));
await dataWriter.StoreAsync();
await outputStream.FlushAsync();
}
}
existingFileStream.Dispose();
return(0);
}
