c# 压缩 zip rar
using System;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;
namespace LogPost
{
public class ZipClass
{
#region 加压
///
/// 功能:压缩文件(暂时只压缩文件夹下一级目录中的文件，文件夹及其子级被忽略)
///
///
被压缩的文件夹夹路径
///
生成压缩文件的路径，为空则默认与被压缩文件夹同一级目录，名称为:文件夹名+.zip
///
出错信息
///
是否压缩成功
public bool ZipFile(string dirPath, string zipFilePath, out string err)
{
err = "";
if (dirPath == string.Empty)
{
err = "要压缩的文件夹不能为空～";
return false;
}
if (!Directory.Exists(dirPath))
{
err = "要压缩的文件夹不存在～";
return false;
}
//压缩文件名为空时使用文件夹名，.zip
if (zipFilePath == string.Empty)
{
if (dirPath.EndsWith("\\"))
{
dirPath = dirPath.Substring(0, dirPath.Length - 1);
}
zipFilePath = dirPath + ".zip";
}
try
{
string[] filenames = Directory.GetFiles(dirPath);
using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))
{
s.SetLevel(9);
byte[] buffer = new byte[4096];
foreach (string file in filenames)
{
ZipEntry entry = new ZipEntry(Path.GetFileName(file));
entry.DateTime = DateTime.Now;
s.PutNextEntry(entry);
using (FileStream fs = File.OpenRead(file))
{
int sourceBytes;
do
{
sourceBytes = fs.Read(buffer, 0, buffer.Length);
s.Write(buffer, 0, sourceBytes);
} while (sourceBytes > 0);
}
}
s.Finish();
s.Close();
}
}
catch (Exception ex)
{
err = ex.Message;
return false;
}
return true;
}
#endregion
#region 解压
方法
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///
/// 功能:解压zip格式的文件。
///
///
压缩文件路径
///
解压文件存放路径,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
///
出错信息
///
解压是否成功
public bool UnZipFile(string zipFilePath, string unZipDir, out string err)
{
err = "";
if (zipFilePath == string.Empty)
{
err = "压缩文件不能为空～";
return false;
}
if (!File.Exists(zipFilePath))
{
err = "压缩文件不存在～";
return false;
}
//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),
Path.GetFileNameWithoutExtension(zipFilePath));
if (!unZipDir.EndsWith("\\")) unZipDir += "\\";
if (!Directory.Exists(unZipDir))
Directory.CreateDirectory(unZipDir);
try
{
using (ZipInputStream s = new
ZipInputStream(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 = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}//while
}
}
catch (Exception ex)
{
err = ex.Message;
return false;
}
return true;
}//解压结束
#endregion
}
}
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