How to use ICSharpCode.ZipLib with stream?

Question

Hello,

I'm very sorry for the conservative title and my question itself,but I'm lost.

The samples provided with ICsharpCode.ZipLib doesn't include what I'm searching for. I want to decompress a byte[] by putting it in InflaterInputStream(ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputStream)

I found a decompress function ,but it doesn't work.

    public static byte[] Decompress(byte[] Bytes)
    {
        ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputStream stream =
            new ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputStream(new MemoryStream(Bytes));
        MemoryStream memory = new MemoryStream();
        byte[] writeData = new byte[4096];
        int size;

        while (true)
        {
            size = stream.Read(writeData, 0, writeData.Length);
            if (size > 0)
            {
                memory.Write(writeData, 0, size);
            }
            else break;
        }
        stream.Close();
        return memory.ToArray();
    }

It throws an exception at line(size = stream.Read(writeData, 0, writeData.Length);) saying it has a invalid header.

My question is not how to fix the function,this function is not provided with the library,I just found it googling.My question is,how to decompress the same way the function does with InflaterStream,but without exceptions.

Thanks and again - sorry for the conservative question.

Answer 1

Well it sounds like the data is just inappropriate, and that otherwise the code would work okay. (Admittedly I'd use a "using" statement for the streams instead of calling Close explicitly.)

Where did you get your data from?

Answer 2

Why don't you use the System.IO.Compression.DeflateStream class (available since .Net 2.0)? This uses the same compression/decompression method but doesn't require an extra library dependency.

Since .Net 2.0 you only need the ICSharpCode.ZipLib if you need the file container support.