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Compression/Decompression string with C#

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情歌与酒
情歌与酒 2020-11-22 17:14

I am newbie in .net. I am doing compression and decompression string in C#. There is a XML and I am converting in string and after that I am doing compression and decompress

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  • 孤独总比滥情好
    孤独总比滥情好 (楼主)
    2020-11-22 17:46

    This is an updated version for .NET 4.5 and newer using async/await and IEnumerables:

    public static class CompressionExtensions
{
    public static async Task> Zip(this object obj)
    {
        byte[] bytes = obj.Serialize();

        using (MemoryStream msi = new MemoryStream(bytes))
        using (MemoryStream mso = new MemoryStream())
        {
            using (var gs = new GZipStream(mso, CompressionMode.Compress))
                await msi.CopyToAsync(gs);

            return mso.ToArray().AsEnumerable();
        }
    }

    public static async Task Unzip(this byte[] bytes)
    {
        using (MemoryStream msi = new MemoryStream(bytes))
        using (MemoryStream mso = new MemoryStream())
        {
            using (var gs = new GZipStream(msi, CompressionMode.Decompress))
            {
                // Sync example:
                //gs.CopyTo(mso);

                // Async way (take care of using async keyword on the method definition)
                await gs.CopyToAsync(mso);
            }

            return mso.ToArray().Deserialize();
        }
    }
}

public static class SerializerExtensions
{
    public static byte[] Serialize(this T objectToWrite)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            BinaryFormatter binaryFormatter = new BinaryFormatter();
            binaryFormatter.Serialize(stream, objectToWrite);

            return stream.GetBuffer();
        }
    }

    public static async Task _Deserialize(this byte[] arr)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            BinaryFormatter binaryFormatter = new BinaryFormatter();
            await stream.WriteAsync(arr, 0, arr.Length);
            stream.Position = 0;

            return (T)binaryFormatter.Deserialize(stream);
        }
    }

    public static async Task Deserialize(this byte[] arr)
    {
        object obj = await arr._Deserialize();
        return obj;
    }
}



    With this you can serialize everything BinaryFormatter supports, instead only of strings.
    


    Edit:
    


    In case, you need take care of Encoding, you could just use Convert.ToBase64String(byte[])...
    


    Take a look at this answer if you need an example!
    
    
    
             
    
                                                        
    
            
            
    
              
                
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