win8 metro 各种格式转换
转自晶晶博客（http://www.iyunv.com/jing870812/archive/2012/04/12/2444870.html）Stream 转IRandomAccessStream
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方法一：
byte[] bytes = StreamToBytes(stream);
InMemoryRandomAccessStream memoryStream = new InMemoryRandomAccessStream();
DataWriter datawriter = new DataWriter(memoryStream.GetOutputStreamAt(0));
datawriter.WriteBytes(bytes);
await datawriter.StoreAsync();
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方法二：
var randomAccessStream = new InMemoryRandomAccessStream();
var outputStream = randomAccessStream.GetOutputStreamAt(0);
await RandomAccessStream.CopyAsync(stream.AsInputStream(), outputStream);
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IRandomAccessStream转 Stream
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Stream stream=WindowsRuntimeStreamExtensions.AsStreamForRead(randomStream.GetInputStreamAt(0));
Ibuffer转Stream
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Stream stream = WindowsRuntimeBufferExtensions.AsStream(buffer);
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Stream转Ibuffer
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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);
Ibuffer转byte[]
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byte[] bytes=WindowsRuntimeBufferExtensions.ToArray(buffer,0,(int)buffer.Length);
Byte[]转Ibuffer
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WindowsRuntimeBufferExtensions.AsBuffer(bytes,0,bytes.Length);
Ibuffer转IrandomAccessStream
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InMemoryRandomAccessStream inStream = new InMemoryRandomAccessStream();
DataWriter datawriter = new DataWriter(inStream.GetOutputStreamAt(0));
datawriter.WriteBuffer(buffer,0,buffer.Length);
await datawriter.StoreAsync();
IrandomAccessStream转Ibuffer
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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);
IRandomAccessStream转FileInputStream
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FileInputStream inputStream=randomStream.GetInputStreamAt(0) as FileInputStream;
IRandomAccessStream转FileOutputStream
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FileOutputStream outStream= randomStream.GetOutputStreamAt(0) as FileOutputStream;
Stream转byte[]
public static byte[] ConvertStreamTobyte(Stream input)
{
byte[] buffer = new byte;
using (MemoryStream ms = new MemoryStream())
{
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
return ms.ToArray();
}
}
Byte转Stream
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public Stream BytesToStream(byte[] bytes)
{
Stream stream = new MemoryStream(bytes);
return stream;
}
Stream转MemoryStream
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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;
}
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