网上找了很多关于ICSharpCode.SharpZipLib.dll控件压缩都只支持一级目录，自己整理了一份支持压缩及解压缩多级目录，功能足够全，可以压缩大文件，在此之前先引用ICSharpCode.SharpZipLib.dll，ICSharpCode.SharpZipLib.dll下载
以下是Zip操作类：
using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
namespace WindowsFormsApplication1
{
publicclassZipClass
{
publicstaticint avg = 1024 * 1024 * 100;//100MB写一次
#region 压缩文件 和 文件夹
///<summary>
///压缩文件 和 文件夹
///</summary>
///<param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
///<param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
///<returns>压缩是否成功</returns>
publicstaticbool Zip(string FileToZip, string ZipedFile)
{
return Zip(FileToZip, ZipedFile, "");
}
///<summary>
///压缩文件 和 文件夹，不压缩顶级目录
///</summary>
///<param name="FolderToZip">待压缩的文件夹，全路径格式</param>
///<param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
///<returns>压缩是否成功</returns>
publicstaticbool ZipNo(string FolderToZip, string ZipedFile)
{
if (!Directory.Exists(FolderToZip))
returnfalse;
if (ZipedFile == string.Empty)
{
//如果为空则文件名为待压缩的文件名加上.rar
ZipedFile = FolderToZip + ".zip";
}
ZipOutputStream s = newZipOutputStream(File.Create(ZipedFile));
s.SetLevel(6);
string[] filenames = Directory.GetFiles(FolderToZip);
ZipEntry entry = null;
FileStream fs = null;
Crc32 crc = newCrc32();
foreach (string file in filenames)
{
//压缩文件
fs = File.OpenRead(file);
byte[] buffer = newbyte[avg];
entry = newZipEntry(Path.GetFileName(file));
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
s.PutNextEntry(entry);
for (int i = 0; i < fs.Length; i += avg)
{
if (i + avg > fs.Length)
{
//不足100MB的部分写剩余部分
buffer = newbyte[fs.Length - i];
}
fs.Read(buffer, 0, buffer.Length);
s.Write(buffer, 0, buffer.Length);
}
}
if (fs != null)
{
fs.Close();
fs = null;
}
if (entry != null)
entry = null;
GC.Collect();
GC.Collect(1);
//压缩目录
string[] folders = Directory.GetDirectories(FolderToZip);
foreach (string folder in folders)
{
if (!ZipFileDictory(folder, s, "")) ;
}
s.Finish();
s.Close();
returntrue;
}
///<summary>
///压缩文件 和 文件夹
///</summary>
///<param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
///<param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
///<param name="Password">压缩密码</param>
///<returns>压缩是否成功</returns>
publicstaticbool Zip(string FileToZip, string ZipedFile, string Password)
{
if (Directory.Exists(FileToZip))
{
return ZipFileDictory(FileToZip, ZipedFile, Password);
}
elseif (File.Exists(FileToZip))
{
return ZipFile(FileToZip, ZipedFile, Password);
}
else
{
returnfalse;
}
}
#endregion
#region 解压
///<summary>
///功能：解压zip格式的文件。
///</summary>
///<param name="zipFilePath">压缩文件路径，全路径格式</param>
///<param name="unZipDir">解压文件存放路径,全路径格式，为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param>
///<param name="err">出错信息</param>
///<returns>解压是否成功</returns>
publicstaticbool UnZip(string zipFilePath, string unZipDir)
{
if (zipFilePath == string.Empty)
{
thrownew System.IO.FileNotFoundException("压缩文件不不能为空！");
}
if (!File.Exists(zipFilePath))
{
thrownew System.IO.FileNotFoundException("压缩文件: " + zipFilePath + " 不存在!");
}
//解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹
if (unZipDir == string.Empty)
unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), "");
if (!unZipDir.EndsWith("//"))
unZipDir += "//";
if (!Directory.Exists(unZipDir))
Directory.CreateDirectory(unZipDir);
try
{
using (ZipInputStream s = newZipInputStream(File.OpenRead(zipFilePath)))
{
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
if (directoryName.Length > 0)
{
Directory.CreateDirectory(unZipDir + directoryName);
}
if (!directoryName.EndsWith("//"))
directoryName += "//";
if (fileName != String.Empty)
{
using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
{
int size = 2048;
byte[] data = newbyte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}//while
}
}
catch (Exception ex)
{
thrownewException(ex.Message);
}
returntrue;
}//解压结束
#endregion
#region 压缩目录
///<summary>
///压缩目录
///</summary>
///<param name="FolderToZip">待压缩的文件夹，全路径格式</param>
///<param name="ZipedFile">压缩后的文件名，全路径格式，如果为空则文件名为待压缩的文件名加上.rar</param>
///<returns></returns>
privatestaticbool ZipFileDictory(string FolderToZip, string ZipedFile, string Password)
{
bool res;
if (!Directory.Exists(FolderToZip))
returnfalse;
if (ZipedFile == string.Empty)
{
//如果为空则文件名为待压缩的文件名加上.rar
ZipedFile = FolderToZip + ".zip";
}
ZipOutputStream s = newZipOutputStream(File.Create(ZipedFile));
s.SetLevel(6);
if (!string.IsNullOrEmpty(Password.Trim()))
s.Password = Password.Trim();
res = ZipFileDictory(FolderToZip, s, "");
s.Finish();
s.Close();
return res;
}
#endregion
#region 压缩文件
///<summary>
///压缩文件
///</summary>
///<param name="FileToZip">要进行压缩的文件名</param>
///<param name="ZipedFile">压缩后生成的压缩文件名，如果为空则文件名为待压缩的文件名加上.rar</param>
///<returns>压缩是否成功</returns>
privatestaticbool ZipFile(string FileToZip, string ZipedFile, string Password)
{
//如果文件没有找到，则报错
if (!File.Exists(FileToZip))
thrownew System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
if (ZipedFile == string.Empty)
{
//如果为空则文件名为待压缩的文件名加上.rar
ZipedFile = FileToZip + ".zip";
}
FileStream ZipFile = null;
ZipOutputStream ZipStream = null;
ZipEntry ZipEntry = null;
bool res = true;
ZipFile = File.Create(ZipedFile);
ZipStream = newZipOutputStream(ZipFile);
ZipEntry = newZipEntry(Path.GetFileName(FileToZip));
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(6);
if (!string.IsNullOrEmpty(Password.Trim()))
ZipStream.Password = Password.Trim();
try
{
ZipFile = File.OpenRead(FileToZip);
byte[] buffer = newbyte[avg];
for (int i = 0; i < ZipFile.Length; i += avg)
{
if (i + avg > ZipFile.Length)
{
//不足100MB的部分写剩余部分
buffer = newbyte[ZipFile.Length - i];
}
ZipFile.Read(buffer, 0, buffer.Length);
ZipStream.Write(buffer, 0, buffer.Length);
}
}
catch (Exception ex)
{
res = false;
}
finally
{
if (ZipEntry != null)
{
ZipEntry = null;
}
if (ZipStream != null)
{
ZipStream.Finish();
ZipStream.Close();
}
if (ZipFile != null)
{
ZipFile.Close();
ZipFile = null;
}
GC.Collect();
GC.Collect(1);
}
return res;
}
#endregion
#region 递归压缩文件夹方法
///<summary>
///递归压缩文件夹方法
///</summary>
///<param name="FolderToZip"></param>
///<param name="s"></param>
///<param name="ParentFolderName"></param>
privatestaticbool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
{
bool res = true;
string[] folders, filenames;
ZipEntry entry = null;
FileStream fs = null;
Crc32 crc = newCrc32();
try
{
//创建当前文件夹
entry = newZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
s.PutNextEntry(entry);
s.Flush();
//先压缩文件，再递归压缩文件夹
filenames = Directory.GetFiles(FolderToZip);
foreach (string file in filenames)
{
//打开压缩文件
fs = File.OpenRead(file);
byte[] buffer = newbyte[avg];
entry = newZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
s.PutNextEntry(entry);
for (int i = 0; i < fs.Length; i += avg)
{
if (i + avg > fs.Length)
{
//不足100MB的部分写剩余部分
buffer = newbyte[fs.Length - i];
}
fs.Read(buffer, 0, buffer.Length);
s.Write(buffer, 0, buffer.Length);
}
}
}
catch (Exception ex)
{
res = false;
}
finally
{
if (fs != null)
{
fs.Close();
fs = null;
}
if (entry != null)
entry = null;
GC.Collect();
GC.Collect(1);
}
folders = Directory.GetDirectories(FolderToZip);
foreach (string folder in folders)
{
if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
returnfalse;
}
return res;
}
#endregion
}
}
调用示例：
压缩目录：ZipClass.Zip(@"F:\a", "");//将F:\a压缩到当前文件夹a.zip
ZipClass.Zip(@"F:\a", "D:\a.zip");//将F:\a压缩到指定文件夹a.zip
压缩文件：ZipClass.Zip(@"F:\a.txt", "");//将F:\a.txt压缩到当前文件夹a.txt.zip
ZipClass.Zip(@"F:\a.txt", "D:\a.txt.zip");//将F:\a.txt压缩到指定文件夹a.txt.zip
解 压：ZipClass.UnZip(@"F:\a.zip", "");//将F:\a.zip解压到当前文件夹
ZipClass.UnZip(@"F:\a.zip", "D:\");//将F:\a.zip解压到指定文件夹