Question

I need to compress object[][] in C#. I can use Gzip comrepss- decompress a byte[] but how to do it in such cases ?

Answer 1

Use binary serialization to turn it into a byte array which you’d then zip. Provided all the objects in the array are serializable, you can do the following

object[][] objects = new[] {new[] {"a"}};
BinaryFormatter formatter = new BinaryFormatter();
using (MemoryStream memoryStream = new MemoryStream())
using (GZipStream gZipStream = new GZipStream(File.OpenWrite("C:\\zipped.zip"), 
    CompressionMode.Compress))
{
    formatter.Serialize(gZipStream, objects);
}

//unzipping
using (GZipStream gZipStream = new GZipStream(File.OpenRead("C:\\zipped.zip"), 
    CompressionMode.Decompress))
{
    objects = (object[][])formatter.Deserialize(gZipStream);
    Console.WriteLine(objects[0][0]); //a
}