asp.net實現文件夾及文件壓縮，並實現下載

　　步驟

　　）先引用 ICSharpCodeSharpZipLibdll

　　）cs文件引入

　　using SystemIO;
using SystemText;

　　using ICSharpCodeSharpZipLibChecksums;
using ICSharpCodeSharpZipLibZip;
using ICSharpCodeSharpZipLibGZip;

　　）代碼

　　#region 下列代碼為壓縮並下載代碼
       ZipOutputStream zos = null;
       String strBaseDir = "";

　　
       void dlZipDir(string strPath string strFileName)
       {
           MemoryStream ms = null;
           ResponseContentType = "application/octetstream";
           strFileName = HttpUtilityUrlEncode(strFileName)Replace(+ );
           ResponseAddHeader("ContentDisposition" "attachment;   filename=" + strFileName + "zip");
           ms = new MemoryStream();
           zos = new ZipOutputStream(ms);
           strBaseDir = strPath + "";
           addZipEntry(strBaseDir);
           zosFinish();
           zosClose();
           ResponseClear();
           ResponseBinaryWrite(msToArray());
           ResponseEnd();
       }

　　void addZipEntry(string PathStr)
       {
           DirectoryInfo di = new DirectoryInfo(PathStr);
           foreach (DirectoryInfo item in diGetDirectories())
           {
               addZipEntry(itemFullName);
           }
           foreach (FileInfo item in diGetFiles())
           {
               FileStream fs = FileOpenRead(itemFullName);
               byte[] buffer = new byte[fsLength];
               fsRead(buffer bufferLength);
               string strEntryName = itemFullNameReplace(strBaseDir "");
               ZipEntry entry = new ZipEntry(strEntryName);
               zosPutNextEntry(entry);
               zosWrite(buffer bufferLength);
               fsClose();
           }
       }  
      

　　PRotected void Button_Click(object sender EventArgs e)
        {
            string userPath ="D:華海實訓（qqviewcom）各級賬號和密碼";
        
               dlZipDir(userPath "華海實訓（qqviewcom）服務賬號");

　　}

　　#endregion

　　

From:http://tw.wingwit.com/Article/program/net/201311/14232.html