C# .NET - how to create a self-extracting zip file in C#

I am able to create a zip file without a problem. The problem comes in when the files are extracted from the new zip file it contains folders for the entire directory path (e.g., C:\Test\Build\Local Cubes\New York) instead of what I expected (e.g., New York and the files in this folder). I'm using J# components to create the file, but this is my first crack at it and would like to know how to create a self-extracting zip that may correct this issue. Here is the code for creating the zip file.

private void m_BuildZip()
		{
// Get list of files to zip.			
   FileStream objFile;
   string strFile;
   string DirPath = "\\\\servername\\c$\\Inetpub\\wwwroot\\UnitNames\\New York.xls";
   string sDir = (DirPath);			
   string[] files = Directory.GetFiles(sDir, "*.xls");
			
//Create zip file containing all .xls files in directory.
   CRC32 objCRC32=new CRC32();
   objFile=File.Create(DirPath + "\\" + ddlGroup.SelectedItem.Text.ToString() + ".zip");
   objFile.Close();
 
  ZipOutputStream zipFile=new ZipOutputStream(new java.io.FileOutputStream    
                                                           (objFile.Name.Substring(60).ToString()));
  zipFile.setLevel(6);

  foreach (string file in files)
			{
  FileStream fs=File.OpenRead(file);
  byte [] buffer=new byte[fs.Length-1];
  sbyte[] buffer1=new sbyte[fs.Length-1];
  strFile=file.Substring(file.LastIndexOf("/")+1);
  fs.Read(buffer,0,buffer.Length);
  ZipEntry objZipEntry=new ZipEntry(strFile);
  java.io.FileInputStream from=new java.io.FileInputStream(file);
  zipFile.putNextEntry(objZipEntry);
  CopyStream(from,zipFile);
  objZipEntry.setMethod(ZipEntry.DEFLATED);
  fs.Close();
  zipFile.closeEntry();
				
}							
zipFile.flush();
zipFile.close();
objFile.Close();			
}

public static void CopyStream(java.io.InputStream from, java.io.OutputStream to)
{
   sbyte[] buffer = new sbyte[8192];
   int got; 
   while ((got = from.read(buffer, 0, buffer.Length)) > 0) to.write(buffer, 0, got);
}

which is written in C#. The download contains some examples. Here's my code i use to zip my IE Favorites folder and contents:

public static  void ZipFavorites()
{
string Path =System.Environment.GetFolderPath(Environment.SpecialFolder.Favorites);
	string OutPath=Environment.CurrentDirectory +"\\Favs.zip";
	ArrayList ar=GenerateFileList(Path); // generate file list
	int TrimLength=(Directory.GetParent(Path)).ToString().Length; // find number of chars to remove
	// from orginal file path
	TrimLength+=1; //remove '\'
	FileStream ostream;
	byte[] obuffer;
	ZipOutputStream oZipStream= new ZipOutputStream(System.IO.File.Create(OutPath)); // create zip stream
	oZipStream.Password=System.Configuration.ConfigurationSettings.AppSettings["zipPass"].ToString();
	oZipStream.SetLevel(9);			
	ZipEntry oZipEntry;
	foreach(string Fil in ar) // for each file, generate a zipentry
	{
		oZipEntry=new ZipEntry(Fil.Remove(0,TrimLength));
		oZipStream.PutNextEntry(oZipEntry);

		if(!Fil.EndsWith(@"/")) // if a file ends with '/' its a directory
		{
			ostream=File.OpenRead(Fil);
			obuffer=new byte[ostream.Length]; // nytt buffer
			ostream.Read(obuffer,0,obuffer.Length);
			oZipStream.Write(obuffer,0,obuffer.Length);
		}
	}
	oZipStream.Finish();
	oZipStream.Close();
}

// Method used to generate file list
private static ArrayList GenerateFileList(string Dir)
{
	ArrayList mid=new ArrayList();
	bool Empty=true;
	foreach(string file in Directory.GetFiles(Dir)) // add each file in directory
	{
		mid.Add(file);
		Empty=false;
	}

	if(Empty)
	{
		if(Directory.GetDirectories(Dir).Length==0) // if directory is completely empty, add it
		{
			mid.Add(Dir+@"/");
		}
	}

	foreach(string dirs in Directory.GetDirectories(Dir)) // do this recurcivly
	{
		foreach(object obj in GenerateFileList(dirs))
		{
			mid.Add(obj);
		}
	}
	return mid; // return file list
}

Thanks for your response. However, since I'm new to this, could you give more details as to how to create the self-extracting file using SharpZipLib? As you can see from the code, I can create a regular "compressed" file, but how would I use this to have it self-extract when the user clicks on the hyperlink created for it?  Or is this a non-issue since the files are in .cub or .xls format? Thanks

using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpCvsLib;
using ICSharpCode.SharpZipLib.Zip;

string[] filenames = Directory.GetFiles(sDir, "*.html"); 
ZipOutputStream s = new ZipOutputStream(File.Create(sDir + "\\" + "Help.zip"));
s.SetLevel(5); 

foreach (string file in filenames) 
{

    FileStream fs = File.OpenRead(file); 
    byte[] buffer = new byte[fs.Length];
    fs.Read(buffer, 0, buffer.Length); 
    ZipEntry entry = new ZipEntry(file); 
    s.PutNextEntry(entry); 
    s.Write(buffer, 0, buffer.Length); 
} 

s.Finish();
s.Close();

require an "sfx" plugin that is bound to the zip file and creates an Executable out of it.
When the executable is run, it "unzips" the zip content and provides a UI. SharpZipLib provides all the zip-related and compression methods. It does not provide the sfx; you will either have to write one yourself, or find somebody elses code.

It should not be too difficult. You would just write a .NET executable that is designed to unzip the zip data that has been compiled into it as an embedded resource.

After you have created your zip file, right click on it in windows explorer and in the winzip context menu, choose "Create self-extracting.."

In the mentioned example, you refer to a Download of samples. Is it possible to point me to the URL, I do not seem to see it on the page.