Windows 8 learning notes (8)-conversion between various streams

Today, the conversion between stream and irandomaccessstream is very tangled, So I simply listed some of the scenarios I thought of first. I hope that I will not have to use it again next time...

StreamTransferIrandomaccessstream

Method 1: byte [] bytes = streamtobytes (Stream); inmemoryrandomaccessstream memorystream = new inmemoryrandomaccessstream (); datawriter = new datawriter (memorystream. getoutputstreamat (0); datawriter. writebytes (bytes); await datawriter. storeasync ();

Method 2: var randomaccessstream = new inmemoryrandomaccessstream (); var outputstream = randomaccessstream. getoutputstreamat (0); await randomaccessstream. copyasync (stream. asinputstream (), outputstream );

Irandomaccessstream TransferStream

Stream stream=WindowsRuntimeStreamExtensions.AsStreamForRead(randomStream.GetInputStreamAt(0));

 

IbufferTransferStream

Stream stream = WindowsRuntimeBufferExtensions.AsStream(buffer);

StreamTransferIbuffer

MemoryStream memoryStream = new MemoryStream();             if (stream != null) {      byte[] bytes = ReadFully(stream);      if (bytes != null)      {           var binaryWriter = new BinaryWriter(memoryStream);           binaryWriter.Write(bytes);       }  }  IBuffer buffer=WindowsRuntimeBufferExtensions.GetWindowsRuntimeBuffer(memoryStream,0,(int)memoryStream.Length);

 

IbufferTransferByte []

byte[] bytes=WindowsRuntimeBufferExtensions.ToArray(buffer,0,(int)buffer.Length);

 

Byte []TransferIbuffer

WindowsRuntimeBufferExtensions.AsBuffer(bytes,0,bytes.Length);

 

IbufferTransferIrandomaccessstream

InMemoryRandomAccessStream inStream = new InMemoryRandomAccessStream();DataWriter datawriter = new DataWriter(inStream.GetOutputStreamAt(0));datawriter.WriteBuffer(buffer,0,buffer.Length);await datawriter.StoreAsync();

 

IrandomaccessstreamTransferIbuffer

Stream stream=WindowsRuntimeStreamExtensions.AsStreamForRead(randomStream.GetInputStreamAt(0));MemoryStream memoryStream = new MemoryStream();            if (stream != null){    byte[] bytes = ReadFully(stream);    if (bytes != null)    {        var binaryWriter = new BinaryWriter(memoryStream);        binaryWriter.Write(bytes);    }} IBuffer buffer=WindowsRuntimeBufferExtensions.GetWindowsRuntimeBuffer(memoryStream,0,(int)memoryStream.Length);

 

IrandomaccessstreamTransferFileinputstream

FileInputStream inputStream=randomStream.GetInputStreamAt(0) as FileInputStream;

 

IrandomaccessstreamTransferFileoutputstream

FileOutputStream outStream= randomStream.GetOutputStreamAt(0) as FileOutputStream;

 

StreamTransferByte []

Public static byte [] convertstreamtobyte (Stream Input)

{

Byte [] buffer = new byte [16*1024];

Using (memorystream MS = new memorystream ())

{

Int read;

While (read = input. Read (buffer, 0, buffer. Length)> 0)

{

Ms. Write (buffer, 0, read );

}

Return Ms. toarray ();

}

}

 

ByteTransferStream

public Stream BytesToStream(byte[] bytes)        {            Stream stream = new MemoryStream(bytes);            return stream;        }

 

StreamTransferMemorystream

public static MemoryStream ConvertStreamToMemoryStream(Stream stream)        {             MemoryStream memoryStream = new MemoryStream();            if (stream != null)            {                byte[] buffer = ReadFully(stream);                if (buffer != null)                {                    var binaryWriter = new BinaryWriter(memoryStream);                    binaryWriter.Write(buffer);                }             }             return memoryStream;        }

There should be some other scenarios. Now I think of this, and I am confused...