Practical experience in using Sharpzip compression and decompression

Compression first, in http://www.icsharpcode.net/OpenSource/SharpZipLib/Default.aspx download source code, find "ZipConstants.cs" modified

public static string ConvertToString (byte[] data)
{
Return encoding.getencoding ("gb2312"). GetString (data, 0, data.) Length);
Return Encoding.ASCII.GetString (data,0, data. Length);
}

public static byte[] Converttoarray (String str)
{
Return encoding.getencoding ("gb2312"). GetBytes (str);
return Encoding.ASCII.GetBytes (str);
}



So you can support the Chinese name.
Here's what I wrote about the compression and decompression code:

Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
Using ICSharpCode.SharpZipLib.Zip;



Namespace OA
{
<summary>
Summary description of the WebForm1.
</summary>
public class WebForm1:System.Web.UI.Page
{
public string Serverdir;
private void Page_Load (object sender, System.EventArgs e)
{
Place user code here to initialize page
This. Serverdir = Page.mappath (".");
This. ZipFile ("01.txt*02.txt*000.zip"); Just examples, the specific people to achieve
This. ZipFile ("01.txt*02.txt*001.zip");
This. Unzipfile ("000.zip*001.zip");
}


public string Shortdir (string s)
{
To convert a file's absolute path to a relative path
String D=s.replace (Serverdir, "");
return D;
}



Compressed file p Returns a list of files for the client: filename + name of the compressed package
public void ZipFile (string p)
{
string[] tmp = p.split (New char[]{' * '}); Detach file List
if (tmp[tmp. Length-1]!= "")//Compressed package name is not empty
{
Zipoutputstream u = new Zipoutputstream (File.create (serverdir+tmp[tmp). LENGTH-1])); New compressed file stream "Zipoutputstream"
for (int i =0;i<tmp. length-1;i++)
{
if (tmp[i]!= "")//separated file name is not empty
{
This. Addzipentry (Tmp[i],u,out u); Adding content to a compressed file stream
}
}
U.finish (); End compression
U.close ();
}
}



Add Compression item: p for files or folders that need to be compressed; U for existing source Zipoutputstream out J for "Zipoutputstream" added "ZipEntry"
public void Addzipentry (string p,zipoutputstream u,out Zipoutputstream j)
{
string S =serverdir+p;

if (directory.exists (s))//folder processing
{
DirectoryInfo di = new DirectoryInfo (s);

The following is the *********** added after revision

if (di. GetDirectories (). length<=0)//No subdirectories
{
ZipEntry z = new ZipEntry (p+ "\"); End "\" is used for folder tags
U.putnextentry (z);
}

The above is the *************** added after revision


foreach (DirectoryInfo tem in DI. GetDirectories ())//Get subdirectories
{
ZipEntry z = new ZipEntry (this. Shortdir (TEM. FullName) + "\ \"); End "\" is used for folder tags
U.putnextentry (z); This sentence must not be small, otherwise the empty directory will not be added
s = this. Shortdir (TEM. FullName);
This. Addzipentry (S,u,out u); Recursion
}
foreach (FileInfo temp in di. GetFiles ())//Get files for this directory
{
s = this. Shortdir (temp. FullName);
This. Addzipentry (S,u,out u); Recursion
}
}
else if (file.exists (s))//File processing
{