using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ZipCompress
{
  public class ZipParameter
  {
    private string zip_Name = "";
    private string zip_DirectoryName = "";
    private List<string> zip_FileList = new List<string>();
    /// <summary>
    /// 压缩后的文件名称
    /// </summary>
    public string ZIPName
    {
      get { return zip_Name; }
      set { zip_Name = value; }
    }
    /// <summary>
    /// 压缩的文件路径
    /// </summary>
    public string ZIPDirectoryName
    {
      get { return zip_DirectoryName; }
      set { zip_DirectoryName = value; }
    }
    /// <summary>
    /// 压缩的文件列表
    /// </summary>
    public List<string> ZIPFileList
    {
      get { return zip_FileList; }
      set { zip_FileList = value; }
    }
  }
}

//****************************************************************************************
//功能：实现文件压缩
//使用方法：设置参数进行压缩
//*****************************************************************************************

using System;
using ICSharpCode.SharpZipLib.Zip;
using System.IO;
using System.Text;
namespace ZipCompress
{
  public class CompressFile
  {
    /// <summary>
    /// 压缩文件参数
    /// </summary>
    public ZipParameter ZipParameter { get; set; }

    /// <summary>
    /// 压缩文件返回压缩后的信息
    /// </summary>
    /// <returns>string 返回压缩后的提示信息</returns>
    public string CompressReturnMsg()
    {
      FileStream Zip_File;
      ZipOutputStream ZipStream;
      ZipEntry ZipEntry;
      string rtnMessage = "";//返回的信息

      try
      {
        //循环文件，如果文件不存在就不添加的压缩里面
        for (int i = 0; i < ZipParameter.ZIPFileList.Count; i++)
        {
          if (!File.Exists(ZipParameter.ZIPFileList[i]))
          {
            ZipParameter.ZIPFileList.RemoveAt(i);
            i--;
          }

        }
        //没有有文件下面的压缩不执行
        if (ZipParameter.ZIPFileList.Count == 0)
        {
          return " file not find";
        }
        //没有目录进行创建
        if (!Directory.Exists(ZipParameter.ZIPDirectoryName))
        {
          Directory.CreateDirectory(ZipParameter.ZIPDirectoryName);
        }

        // 解决文档名称乱码问题,出现乱码就是因为CodePage不对
        Encoding gbk = Encoding.GetEncoding("gbk");
        ICSharpCode.SharpZipLib.Zip.ZipConstants.DefaultCodePage = gbk.CodePage;

        //文件路径，文档路径与文件名称
        string strPath = ZipParameter.ZIPDirectoryName + ZipParameter.ZIPName;

        Zip_File = File.Create(strPath);
        ZipStream = new ZipOutputStream(Zip_File);
        foreach (string FileToZip in ZipParameter.ZIPFileList)
        {
          Zip_File = File.OpenRead(FileToZip);
          byte[] buffer = new byte[Zip_File.Length];
          Zip_File.Read(buffer, 0, buffer.Length);
          Zip_File.Close();
          ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
          ZipStream.PutNextEntry(ZipEntry);
          ZipStream.Write(buffer, 0, buffer.Length);
        }
        ZipStream.Finish();
        ZipStream.Close();
        Zip_File.Close();
        rtnMessage = "success";
      }
      catch (Exception ex)
      {
        rtnMessage = "fail:" + ex.Message;
      }
      finally
      {
        GC.Collect();
        GC.Collect(1);
      }
      return rtnMessage;
    }
  }
}

ZipParameter zp = new ZipParameter();
zp.ZIPDirectoryName = @"C:\Users\Public\Pictures\Sample Pictures\";
zp.ZIPName = "Test.zip";
zp.ZIPFileList.Add(@"C:\Users\Public\Pictures\Sample Pictures\Chrysanthemum.jpg");
zp.ZIPFileList.Add(@"C:\Users\Public\Pictures\Sample Pictures\Desert.jpg");
zp.ZIPFileList.Add(@"C:\Users\Public\Pictures\Sample Pictures\错误文件.jpg");
CompressFile cprFile = new CompressFile();
cprFile.ZipParameter = zp;
string strMessage = cprFile.CompressReturnMsg();