C#中，Stream和Byte[]的转换

byte[] m_Bytes = ReadToEnd(myStream);

Public static byte[] readToEnd(System.IO.Stream stream)
{
long originalPosition = stream.Position;
stream.Position = 0;

try
{
byte[] readBuffer = new byte[4096];	//最大Size
int totalBytesRead = 0;
int bytesRead;

while((bytesRead = stream.Read(readBuffer, totalBytesRead, readBuffer.Length-totalBytesRead))>0)
{
totalBytesRead += bytesRead;

if (totalBytesRead == readBuffer.Length)
{
int nextByte = stream.ReadByte();
if (nextByte != -1)
{
byte[] temp = new byte[readBuffer.Length * 2];
Buffer.BlockCopy(readBuffer, 0, temp, 0, readBuffer.Length);
Buffer.SetByte(temp, totalBytesRead, (byte)nextByte);
readBuffer = temp;
totalBytesRead++;
}
}
}

byte[] buffer = readBuffer;
if (readBuffer.Length != totalBytesRead)
{
buffer = new byte[totalBytesRead];
Buffer.BlockCopy(readBuffer, 0, buffer, 0, totalBytesRead);
}
return buffer;
}
finally
{
stream.Position = originalPosition;
}
}