C# Unpacking zip files

Question

I got a problem with decompression of ZIP files. So firstly, i created 7z file by myself, using system tools. I tried to unpack it manually by 7zip system tools, and it succeed. But when i try to do it from code:

 string zipPath = @"c:\Test.7z";
 string extractPath = @"c:\extractHere";
 ZipFile.ExtractToDirectory(zipPath, extractPath);

I get an exception: An unhandled exception of type 'System.IO.InvalidDataException' occurred in System.IO.Compression.FileSystem.dll.

End of Central Directory record could not be found

I tried reading forum, and everywhere people says the file is corrupt. Im sure it isnt. I also tried this code:

 using (ZipArchive archive = ZipFile.OpenRead(zipPath))
                        {
                            foreach (ZipArchiveEntry entry in archive.Entries)
                            {
                                if (entry.FullName.EndsWith(".txt", StringComparison.OrdinalIgnoreCase))
                                {
                                    entry.ExtractToFile(Path.Combine(extractPath, entry.FullName));
                                }
                            }
                        }

This code returning the same error on the very first lane (ZipFile.OpenRead(zipPath). I have a reference to both assemblies in the project:

• System.IO.Compression
• System.IO.Compression.FileSystem

Any ideas what can be wrong ?