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UWP 各种流之间的转换

分类:

Stream 转IRandomAccessStream

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


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

IRandomAccessStream 转 Stream

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

Ibuffer转Stream

Stream stream = WindowsRuntimeBufferExtensions.AsStream(buffer);
?

Stream转Ibuffer

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[]

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


?

Byte[]转Ibuffer

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


?

Ibuffer转IrandomAccessStream

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

IrandomAccessStream转Ibuffer

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);


AccessStream转FileInputStream

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


?

IRandomAccessStream转FileOutputStream

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


?

Stream转byte[]

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

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

Stream转MemoryStream

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;
        }



songshizhao
最初发表2021/6/17 9:56:33 最近更新2021/6/17 10:22:31 45
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