从受密码保护的Zip文件中提取

Question

This is my requirement, I need to extract files from password protected zipped files. I would like to know if there are any code snippets available. I am using SSIS to download these zipped files from an FTP. Is there any latest update to the 4.5 framework which I can make use of.

Update:

I have now referenced the file and tried out an example but now I am getting an exception, I even tried to add a breakpoint in my script task but still what I get is only an exception.

Exception:

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
   at Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTATaskScriptingEngine.ExecuteScript()

Snapshot:

Code:

try
    {
            string zipfilePath = @"C:\ZipFiles";
            string zipPassword = "qwerty";
        using (ZipFile zip = new ZipFile())
        {
            zip.Password = zipPassword;
            zip.AddFile("File-01.txt");
            zip.AddFile("File-02.txt");
            zip.AddFile("File-03.txt");
            zip.AddFile("File-04.txt");
            zip.Save(zipfilePath + "AllFiles.zip");
        }
    }
    catch (Exception e)
    {
        MessageBox.Show(e.ToString());
    }

PS: I am new to C#

Answer 1

DotNetZip supports password protection. It's available as a NuGet package and allows you to extract from a password protected zip file as follows (taken and modified from the link):

string baseDirectory = "C:\\output";
string password = "password";

using (ZipFile zip = ZipFile.Read("MyArchive.zip"))
{
    ZipEntry e = zip["MyFile.txt"];
    e.ExtractWithPassword(baseDirectory, password);
}

There are lots of other "code-snippets" like this on the C# examples page I linked you.