Unable to access GZipStrean due to protection level

Question

I just want to access System.IO.Compression.GZipStream class to decompress Web Http response. But I am unable to access GZipStream class due to protection level. I am using Mvvm cross for mobile development.

Here is GZipStream class code :

namespace System.IO.Compression

{

internal class GZipStream : Stream

{
    public GZipStream(Stream stream, CompressionMode mode);
    public GZipStream(Stream stream, CompressionMode mode, bool leaveOpen);

} }

I need to access first constructor to create instance of GZipStream.
So is there any other way to create GZipStream type instance ?

What does it mean, you cannot access public constructor of GzipStream? May you can provide more details about your issue? — Max Kilovatiy, Feb 05 '16 at 08:25
Yes @Max, i want to use public constructor of GZipStream class — Uddhao Pachrne, Feb 05 '16 at 10:15

score 1 · Answer 1 · answered Jul 07 '17 at 05:25

1

In Xamarin Forms for PCL I resolve this problem just replaced TargetFrameworkProfile in your_project_name .csproj

FROM:

Profile259

TO:

Profile111

Also possible to try install NuGet package Microsoft.Bcl.Compression, this option although resolve problem with access to GZipStream, but in time compilation I had System.TypeLoadException.

answered Jul 07 '17 at 05:25

Polyariz

534
1
7
17

Can I know what Profile111 means?How is it different from Profile259? Any impact? – Aashish Mar 09 '20 at 08:28
Profile111 compatible with the .NET Standard 1.1 and PCL: .NET Framework 4.5, Windows 8, Windows Phone 8.1 Profile259 - .NET Standard 1.0 and PCL: .NET Framework 4.5, Windows 8, Windows Phone 8.1, Windows Phone Silverlight 8 There is more: https://learn.microsoft.com/ru-ru/dotnet/standard/net-standard – Polyariz Mar 28 '20 at 11:30

score 0 · Answer 2 · answered Feb 05 '16 at 10:22

You can easily compress byte[] buffer array like this

        using (var ms = new MemoryStream())
        {
            using (var gzip = new GZipStream(ms, CompressionMode.Compress))
            {
                gzip.Write(buffer, 0, buffer.Length);
                gzip.Close();
            }

            compressed = ms.ToArray();
        }

Unable to access GZipStrean due to protection level

2 Answers2