How to Unzip all .Zip file from Folder using C# 4.0 and without using any OpenSource Dll?

Question

I have a folder containing .ZIP files. Now, I want to Extract the ZIP Files to specific folders using C#, but without using any external assembly or the .Ne

Answer 1

I had the same problem and solved it by calling 7-zip executable through cmd shell from C# code, as follows,

string zipped_path = "xxx.7z";
string unzipped_path = "yyy";
string arguments = "e " + zipped_path + " -o" + unzipped_path;

System.Diagnostics.Process process
         = Launch_in_Shell("C:\\Program Files (x86)\\7-Zip\\","7z.exe", arguments);

if (!(process.ExitCode == 0))
     throw new Exception("Unable to decompress file: " + zipped_path);

And where Launch_in_Shell(...) is defined as,

public static System.Diagnostics.Process Launch_in_Shell(string WorkingDirectory,
                                                         string FileName, 
                                                         string Arguments)
{
       System.Diagnostics.ProcessStartInfo processInfo 
                                         = new System.Diagnostics.ProcessStartInfo();

        processInfo.WorkingDirectory = WorkingDirectory;
        processInfo.FileName = FileName;
        processInfo.Arguments = Arguments;
        processInfo.UseShellExecute = true;
        System.Diagnostics.Process process 
                                      = System.Diagnostics.Process.Start(processInfo);

        return process;
}

Drawbacks: You need to have 7zip installed in your machine and I only tried it with ".7z" files. Hope this helps.