压缩文件夹实例代码

来源：互联网发布：淘宝客服礼貌用语大全编辑：程序博客网时间：2024/05/17 08:00

首先要添加ICSharpCode.SharpZipLib引用

public class ZipFileDownload
    {
        /// <summary>
        /// 压缩文件夹
        /// </summary>
        /// <param name="DirectoryToZip">需要压缩的文件夹（绝对路径）</param>
        /// <param name="ZipedPath">压缩后的文件路径（绝对路径）</param>
        /// <param name="ZipedFileName">压缩后的文件名称（文件名，默认同源文件夹同名）</param>
        /// <param name="IsEncrypt">是否加密（默认加密）</param>
        public static string ZipDirectory(string DirectoryToZip, string ZipedPath, string ZipedFileName = "", bool IsEncrypt = true)
        {
            //需要压缩的文件夹不存在则返回
            if (!System.IO.Directory.Exists(DirectoryToZip))
            {
                return string.Empty;
            }
            string ZipFileName = string.IsNullOrEmpty(ZipedFileName) ? ZipedPath + new DirectoryInfo(DirectoryToZip).Name + ".zip" : ZipedPath + ZipedFileName + ".zip";
            using (System.IO.FileStream ZipFile = System.IO.File.Create(ZipFileName))
            {
                using (ZipOutputStream s = new ZipOutputStream(ZipFile))
                {
                    if (IsEncrypt)
                    { }
                    ZipSetp(DirectoryToZip, s, "");
                }
            }
            return ZipFileName;
        }
        /// <summary>
        /// 递归遍历目录
        /// </summary>
        /// <param name="strDirectory">需要压缩的文件夹（绝对路径）</param>
        /// <param name="s"></param>
        /// <param name="parentPath"></param>
        private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath)
        {
            if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar)
            {
                strDirectory += Path.DirectorySeparatorChar;
            }
            Crc32 crc = new Crc32();
            string[] filenames = Directory.GetFileSystemEntries(strDirectory);
            foreach (string file in filenames)// 遍历所有的文件和目录
            {
                if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件
                {
                    string pPath = parentPath;
                    pPath += file.Substring(file.LastIndexOf("\\") + 1);
                    pPath += "\\";
                    ZipSetp(file, s, pPath);

                }
                else // 否则直接压缩文件
                {
                    using (FileStream fs = File.OpenRead(file))
                    {
                        byte[] buffer = new byte[fs.Length];
                        fs.Read(buffer, 0, buffer.Length);

string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1);
ZipEntry entry = new ZipEntry(fileName);

entry.DateTime = DateTime.Now;
entry.Size = fs.Length;

fs.Close();

crc.Reset();
crc.Update(buffer);

entry.Crc = crc.Value;
s.PutNextEntry(entry);

                        s.Write(buffer, 0, buffer.Length);
                    }
                    File.Delete(file);
                }
            }
        }
    }

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