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.Net : Unzipping Gz file : Insufficient memory to continue the execution of the program

So I have been using the method below to unzip .gz files and its been working really well.
It uses SharpZip.
Now I am using larger files and it seems to be trying to unzip everything in memory giving me : Insufficient memory to continue the execution of the program..
Should I be reading each line instead of using ReadToEnd()?
public static void DecompressGZip(String fileRoot, String destRoot)
{
using FileStream fileStram = new FileStream(fileRoot, FileMode.Open, FileAccess.Read);
using GZipInputStream zipStream = new GZipInputStream(fileStram);
using StreamReader sr = new StreamReader(zipStream);
var data = sr.ReadToEnd();
File.WriteAllText(destRoot, data);
}

Like #alexei-levenkov suggests, CopyTo will chunk the copy without using up all the memory.
Bonus points, use the Async version for the threading goodness.
public static async Task DecompressGZipAsync(String fileRoot, String destRoot)
{
using (Stream zipFileStream = File.OpenRead(fileRoot))
using (Stream outputFileStream = File.Create(destRoot))
using (Stream zipStream = new GZipInputStream(zipFileStream))
{
await zipStream.CopyToAsync(outputFileStream);
}
}

Compressing a folder to gzip/zip file from PCL

I am developing UWP and Windows phone 8.1 in the same solution.
On both projects I need a functionality of compressing a whole folder to one gzip file (in order to send it to server).
Libraries I've tried and encountered issues with:
SharpZipLib - uses System.IClonable which I cannot referance in my PCL project
DotNetZip - Not Suporting PCL/UWP
System.IO.Compression - Work only with Stream, cannot compress whole folder
I can split the implementation for each platform (although it is not perfect) but I still didn't found something that can be used in UWP.
Any help will be appriciated

Ok, so I found this project called SharpZipLib.Portable which is also an open source
Github : https://github.com/ygrenier/SharpZipLib.Portable
Really nice :)

Working on a UWP library you will have to use the Stream subsystem of the System.IO.Compression. There are many such limitations when you need a PCL version of .NET Framework. Live with that.
In your context that is not much of a trouble.
The required usings are:
using System;
using System.IO;
using System.IO.Compression;
Then the methods...
private void CreateArchive(string iArchiveRoot)
{
using (MemoryStream outputStream = new MemoryStream())
{
using (ZipArchive archive = new ZipArchive(outputStream, ZipArchiveMode.Create, true))
{
//Pick all the files you need in the archive.
string[] files = Directory.GetFiles(iArchiveRoot, "*", SearchOption.AllDirectories);
foreach (string filePath in files)
{
FileAppend(iArchiveRoot, filePath, archive);
}
}
}
}
private void FileAppend(
string iArchiveRootPath,
string iFileAbsolutePath,
ZipArchive iArchive)
{
//Has to return something like "dir1/dir2/part1.txt".
string fileRelativePath = MakeRelativePath(iFileAbsolutePath, iArchiveRootPath);
ZipArchiveEntry clsEntry = iArchive.CreateEntry(fileRelativePath, CompressionLevel.Optimal);
Stream entryData = clsEntry.Open();
//Write the file data to the ZipArchiveEntry.
entryData.Write(...);
}
//http://stackoverflow.com/questions/275689/how-to-get-relative-path-from-absolute-path
private string MakeRelativePath(
string fromPath,
string toPath)
{
if (String.IsNullOrEmpty(fromPath)) throw new ArgumentNullException("fromPath");
if (String.IsNullOrEmpty(toPath)) throw new ArgumentNullException("toPath");
Uri fromUri = new Uri(fromPath);
Uri toUri = new Uri(toPath);
if (fromUri.Scheme != toUri.Scheme) { return toPath; } // path can't be made relative.
Uri relativeUri = fromUri.MakeRelativeUri(toUri);
String relativePath = Uri.UnescapeDataString(relativeUri.ToString());
if (toUri.Scheme.Equals("file", StringComparison.OrdinalIgnoreCase))
{
relativePath = relativePath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
}
return relativePath;
}

Compress a single file using C#

I am using .NET 4.5, and the ZipFile class works great if I am trying to zip up an entire directory with "CreateFromDirectory". However, I only want to zip up one file in the directory. I tried pointing to a specific file (folder\data.txt), but that doesn't work. I considered the ZipArchive class since it has a "CreateEntryFromFile" method, but it seems this only allows you to create an entry into an existing file.
Is there no way to simply zip up one file without creating an empty zipfile (which has its issues) and then using the ZipArchiveExtension's "CreateEntryFromFile" method?
**This is also assuming I am working on a company program which cannot use third-party add-ons at the moment.
example from:http://msdn.microsoft.com/en-us/library/ms404280%28v=vs.110%29.aspx
string startPath = #"c:\example\start";
string zipPath = #"c:\example\result.zip";
string extractPath = #"c:\example\extract";
ZipFile.CreateFromDirectory(startPath, zipPath);
ZipFile.ExtractToDirectory(zipPath, extractPath);
But if startPath were to be #"c:\example\start\myFile.txt;", it would throw an error that the directory is invalid.

Use the CreateEntryFromFile off a an archive and use a file or memory stream:
Using a filestream if you are fine creating the zip file and then adding to it:
using (FileStream fs = new FileStream(#"C:\Temp\output.zip",FileMode.Create))
using (ZipArchive arch = new ZipArchive(fs, ZipArchiveMode.Create))
{
arch.CreateEntryFromFile(#"C:\Temp\data.xml", "data.xml");
}
Or if you need to do everything in memory and write the file once it is done, use a memory stream:
using (MemoryStream ms = new MemoryStream())
using (ZipArchive arch = new ZipArchive(ms, ZipArchiveMode.Create))
{
arch.CreateEntryFromFile(#"C:\Temp\data.xml", "data.xml");
}
Then you can write the MemoryStream to a file.
using (FileStream file = new FileStream("file.bin", FileMode.Create, System.IO.FileAccess.Write)) {
byte[] bytes = new byte[ms.Length];
ms.Read(bytes, 0, (int)ms.Length);
file.Write(bytes, 0, bytes.Length);
ms.Close();
}

Using file (or any) stream:
using (var zip = ZipFile.Open("file.zip", ZipArchiveMode.Create))
{
var entry = zip.CreateEntry("file.txt");
entry.LastWriteTime = DateTimeOffset.Now;
using (var stream= File.OpenRead(#"c:\path\to\file.txt"))
using (var entryStream = entry.Open())
stream.CopyTo(entryStream);
}
or briefer:
// reference System.IO.Compression
using (var zip = ZipFile.Open("file.zip", ZipArchiveMode.Create))
zip.CreateEntryFromFile("file.txt", "file.txt");
make sure you add references to System.IO.Compression
Update
Also, check out the new dotnet API documentation for ZipFile and ZipArchive too. There are a few examples there. There is also a warning about referencing System.IO.Compression.FileSystem to use ZipFile.
To use the ZipFile class, you must reference the
System.IO.Compression.FileSystem assembly in your project.

The simplest way to get this working is to use a temporary folder.
FOR ZIPPING:
Create a temp folder
Move file to folder
Zip folder
Delete folder
FOR UNZIPPING:
Unzip archive
Move file from temp folder to your location
Delete temp folder

In .NET, there are quite a few ways to tackle the problem, for a single file. If you don't want to learn everything there, you can get an abstracted library, like SharpZipLib (long standing open source library), sevenzipsharp (requires 7zip libs underneath) or DotNetZip.

just use following code for compressing a file.
public void Compressfile()
{
string fileName = "Text.txt";
string sourcePath = #"C:\SMSDBBACKUP";
DirectoryInfo di = new DirectoryInfo(sourcePath);
foreach (FileInfo fi in di.GetFiles())
{
//for specific file
if (fi.ToString() == fileName)
{
Compress(fi);
}
}
}
public static void Compress(FileInfo fi)
{
// Get the stream of the source file.
using (FileStream inFile = fi.OpenRead())
{
// Prevent compressing hidden and
// already compressed files.
if ((File.GetAttributes(fi.FullName)
& FileAttributes.Hidden)
!= FileAttributes.Hidden & fi.Extension != ".gz")
{
// Create the compressed file.
using (FileStream outFile =
File.Create(fi.FullName + ".gz"))
{
using (GZipStream Compress =
new GZipStream(outFile,
CompressionMode.Compress))
{
// Copy the source file into
// the compression stream.
inFile.CopyTo(Compress);
Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
fi.Name, fi.Length.ToString(), outFile.Length.ToString());
}
}
}
}
}
}

Using System.IO.Packaging to generate a ZIP file

I know that the likes of the DotNetZip or SharpZipLib libraries are usually recommended for creating ZIP files in a .net language (C# in my case), but it's not impossible to use System.IO.Packaging to generate a ZIP file. I thought it might be nice to try and develop a routine in C# which could do it, without the need to download any external libraries. Does anyone have a good example of a method or methods that will use System.IO.Packaging to generate a ZIP file?

let me google this for you -> system.io.packaging+generate+zip
first link
http://weblogs.asp.net/jongalloway//creating-zip-archives-in-net-without-an-external-library-like-sharpziplib
using System;
using System.IO;
using System.IO.Packaging;
namespace ZipSample
{
class Program
{
static void Main(string[] args)
{
AddFileToZip("Output.zip", #"C:\Windows\Notepad.exe");
AddFileToZip("Output.zip", #"C:\Windows\System32\Calc.exe");
}
private static void AddFileToZip(string zipFilename, string fileToAdd, CompressionOption compression = CompressionOption.Normal)
{
using (Package zip = System.IO.Packaging.Package.Open(zipFilename, FileMode.OpenOrCreate))
{
string destFilename = ".\\" + Path.GetFileName(fileToAdd);
Uri uri = PackUriHelper.CreatePartUri(new Uri(destFilename, UriKind.Relative));
if (zip.PartExists(uri))
{
zip.DeletePart(uri);
}
PackagePart part = zip.CreatePart(uri, "", compression);
using (FileStream fileStream = new FileStream(fileToAdd, FileMode.Open, FileAccess.Read))
{
using (Stream dest = part.GetStream())
{
fileStream.CopyTo(dest);
}
}
}
}
}
}

In .NET Framework 4.5 you can use the new classes in the System.IO.Compression namespace.

IPTC .NET read/write c# library

I am looking for some library to read/write IPTC metadata from Jpg files.
Open source or paid, doesn't matter.
It should work with .NET 3.5 and c#.
Does anybody know such a library? I googled but haven't found anything.

*http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.aspx
using System;
using System.IO;
using System.Linq;
using System.Windows.Media.Imaging;
namespace wictest
{
class Program
{
static void Main(string[] args)
{
var stream = new FileStream("1.jpg", FileMode.Open, FileAccess.Read);
var decoder = new JpegBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.None);
var metadata = decoder.Frames[0].Metadata as BitmapMetadata;
if(metadata != null)
Console.WriteLine(metadata.Keywords.Aggregate((old, val) => old + "; " + val));
Console.ReadLine();
}
}
}
You need to reference PresentationCore.dll and WindowsBase.dll to get access to the System.Windows.Media namespace.