今天做8.1程序时彻底弄混了IRandomAcessStream和Stream。。。于是乎,我找了一个可用的不同类型转换。。。。

Stream 转IRandomAccessStream

方法一:

1
2
3
4
5
byte[] bytes = StreamToBytes(stream);
InMemoryRandomAccessStream memoryStream = new InMemoryRandomAccessStream();
DataWriter datawriter = new DataWriter(memoryStream.GetOutputStreamAt(0));
datawriter.WriteBytes(bytes);
await datawriter.StoreAsync();

方法二:

1
2
3
var randomAccessStream = new InMemoryRandomAccessStream();
var outputStream = randomAccessStream.GetOutputStreamAt(0);
await RandomAccessStream.CopyAsync(stream.AsInputStream(), outputStream);

IRandomAccessStream 转 Stream

1
Stream stream=WindowsRuntimeStreamExtensions.AsStreamForRead(randomStream.GetInputStreamAt(0));

Ibuffer转Stream

1
Stream stream = WindowsRuntimeBufferExtensions.AsStream(buffer);

Stream转Ibuffer

1
2
3
4
5
6
7
8
9
10
11
12
 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[]

1
byte[] bytes=WindowsRuntimeBufferExtensions.ToArray(buffer,0,(int)buffer.Length);

Byte[]转Ibuffer

1
WindowsRuntimeBufferExtensions.AsBuffer(bytes,0,bytes.Length);

Ibuffer转IrandomAccessStream

1
2
3
4
5
InMemoryRandomAccessStream inStream = new InMemoryRandomAccessStream();
DataWriter datawriter = new DataWriter(inStream.GetOutputStreamAt(0));
datawriter.WriteBuffer(buffer,0,buffer.Length);

await datawriter.StoreAsync();

IrandomAccessStream转Ibuffer

1
2
3
4
5
6
7
8
9
10
11
12
13
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

1
FileInputStream inputStream=randomStream.GetInputStreamAt(0) as FileInputStream;

IRandomAccessStream转FileOutputStream

1
FileOutputStream outStream= randomStream.GetOutputStreamAt(0) as FileOutputStream;

Stream转byte[]

1
2
3
4
5
6
7
8
9
10
11
12
13
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();
}
}

Byte转Stream

1
2
3
4
5
public Stream BytesToStream(byte[] bytes)
{
Stream stream = new MemoryStream(bytes);
return stream;
}

Stream转MemoryStream

1
2
3
4
5
6
7
8
9
10
11
12
13
14
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;
}

IrandomAccessStream转byte[]

1
2
3
4
Stream stream = WindowsRuntimeStreamExtensions.AsStreamForRead(randomStream.GetInputStreamAt(0));
MemoryStream ms = new MemoryStream();
await stream.CopyToAsync(ms);
byte[] bytes = ms.ToArray();