asp.net C#实现解压缩文件的方法(2)

using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using ICSharpCode.SharpZipLib.Zip;
namespace ZipLib
{
    /// <summary>
    /// 解压缩类
    /// </summary>
   public static class ZIP
    {
        /// <summary>
        /// 解压ZIP文件包
        /// </summary>
        /// <param>ZIP文件路径</param>
        /// <param>解压后的文件目录路径</param>
        /// <returns>是否解压成功</returns>
        public static bool unzipFiles(string strZipFile, string strDir)
        {
            //判断ZIP文件是否存在
            if (File.Exists(strZipFile))
            {
                //判断目录是否存在
                bool bUnzipDir = false;
                //判断是否需要创建目录
                if (!Directory.Exists(strDir))
                    bUnzipDir = (Directory.CreateDirectory(strDir) != null);
                else
                    bUnzipDir = true;
                //如果解压目录存在
                if (bUnzipDir)
                {
                    //获得ZIP数据流
                    ZipInputStream zipStream = new ZipInputStream(File.OpenRead(strZipFile));
                    if (zipStream != null)
                    {
                        ZipEntry zipEntry = null;
                        while ((zipEntry = zipStream.GetNextEntry()) != null)
                        {
                            string strUnzipFile = strDir + "//" + zipEntry.Name;
                            string strFileName = Path.GetFileName(strUnzipFile);
                            string strDirName = Path.GetDirectoryName(strUnzipFile);
                            //是否为解压目录
                            if (!string.IsNullOrEmpty(strDirName))
                                Directory.CreateDirectory(strDirName);
                            //是否为解压文件
                            if (!string.IsNullOrEmpty(strFileName))
                            {
                                //解压文件
                                FileStream unzipFileStream = new FileStream(strUnzipFile, FileMode.Create);
                                if (unzipFileStream != null)
                                {
                                    byte[] buf = new byte[2048];
                                    int size = 0;
                                    while ((size = zipStream.Read(buf, 0, 2048)) > 0)
                                        unzipFileStream.Write(buf, 0, size);
                                    //关闭Stream
                                    unzipFileStream.Flush();
                                    unzipFileStream.Close();
                                }
                            }
                        }
                        //关闭ZIP流
                        zipStream.Close();
                        //返回值
                        return true;
                    }
                }
            }
            return false;
        }
    }
}

上面两个都是解压缩文件，下面我们把压缩与解压缩放在一个实例中。
最近要做一个项目涉及到C#中压缩与解压缩的问题的解决方法，大家分享。
这里主要解决文件夹包含文件夹的解压缩问题。