Put your verification WriteLine outside of the using. The buffers haven't been flushed yet.
using (DeflateStream compressionStream = new DeflateStream(resultStream, CompressionLevel.Optimal))
{
assignedUsersStream.CopyTo(compressionStream);
//Console.WriteLine("Compressed from {0} to {1} bytes.",
// assignedUsersStream.Length.ToString(), resultStream.Length.ToString());
}
Console.WriteLine("Compressed from {0} to {1} bytes.",
assignedUsersStream.Length, resultStream.ToArray().Length);
And aside, you don't need all those ToString()
s in a writeline.
PS: All a BinaryFormatter does with a string is write the bytes with length prefix. If you don't need the prefix (my guess), it could become:
string users = "";//Really long string goes here
byte[] result;
using (MemoryStream resultStream = new MemoryStream())
{
using (DeflateStream compressionStream = new DeflateStream(resultStream,
CompressionLevel.Optimal))
{
byte[] inBuffer = Encoding.UTF8.GetBytes(users);
compressionStream.Write(inBuffer, 0, inBuffer.Length);
}
result = resultStream.ToArray();
}
The reverse is just as easy but you'll need an estimate of the maximum length to create the read-buffer:
string users2 = null;
using (MemoryStream resultStream = new MemoryStream(result))
{
using (DeflateStream compressionStream = new DeflateStream(resultStream,
CompressionMode.Decompress))
{
byte[] outBuffer = new byte[2048]; // need an estimate here
int length = compressionStream.Read(outBuffer, 0, outBuffer.Length);
users2 = Encoding.UTF8.GetString(outBuffer, 0, length);
}
}