C # DotNetZip Compressed single, multiple files, and folders

Some projects in order to better user experience, will download the file into a compressed file, direct download, so as to avoid the click to download files. There are many ways to compress files on the Internet, there are third-party loading DLL files, this paper mainly introduces DotNetZip compression method.

DotNetZip's dll:http://download.csdn.net/detail/lilinoscar/8295255

Official website: http://dotnetzip.codeplex.com/

Solve DotNetZip compression Chinese name garbled, only need to set the encoding when instantiating: System.Text.Encoding.Default

That is: zipfile zip = new ZipFile (System.Text.Encoding.Default).

Solve DotNetZip compressed file has a multi-level directory: Zip.addfile (file, "");

AddFile plus the second parameter removes multiple layers of folders.

        #region bool SaveFile (String filePath, byte[] bytes) file save,///<summary>///File save, especially some files put into data Library, can be directly from the data binary, and then saved to the specified folder///</summary>//<param name= "FilePath" > Save file Address </param>/ <param name= "bytes" > File binary </param>//<returns></returns> public static bool Save            File (String filePath, byte[] bytes) {bool result = true;                    try {using (var FileStream = new FileStream (FilePath, FileMode.Create)) { FileStream.Write (bytes, 0, bytes.                Length);            }} catch (Exception) {result = false;        } return result;        #endregion #region Determine if the folder exists///<summary>///Determine if the folder exists///</summary>  <param name= "Path" > folder address </param>//<returns></returns>      public static bool Directoryexist (string path) {if (!string.            IsNullOrEmpty (path) && directory.exists (path)) {return true;        } return false; #endregion #region Create Folder///<summary>//Create Folder///</summary>/ <param name= "Path" > File address </param>//<returns></returns> public static BOOL Direct Oryadd (string path) {if (!string. IsNullOrEmpty (path) &&!             Directory.Exists (Path)) {directory.createdirectory (path);//new folder return true;        } return false; #endregion #region Get the compressed file path///<summary>//Get compressed file path///</summary&gt        ;        <param name= "Dirpath" > Compressed file path </param>//<param name= "Filespath" > Multiple file Paths </param> <returns></returns> public static string Getcompresspath (String dirpath, list<string> Filespath) { var zippath = "";//returns the compressed file path using (ZipFile zip = new ZipFile (System.Text.Encoding.Default))//system.text.enc Oding.                    Default setting Chinese attachment name garbled, not set will appear garbled {foreach (var file in Filespath) { Zip.    AddFile (file, ""); The second parameter is empty, stating that there are no multi-tiered folders for compressed files. For example C:\test\a\b\c.doc compressed after the decompression file will appear C.doc//if changed to zip. AddFile (file), there will be multi-layer folder compression, such as C:\test\a\b\c.doc compression after extracting the file will appear Test\a\b\c.doc} Zippath = string.                Format ("{0}\\{1}.zip", Dirpath, DateTime.Now.ToString ("Yyyymmddhhmmss")); Zip.            Save (Zippath);        } return Zippath; } #endregion

Call:

                 list<string> Filespath = new list<string> (); Filespath.add ("C:/test/a.doc"); Filespath.add ("C:/test/b.doc"); Filespath.add (Server.MapPath ("~/text/files/c.doc"));//You can set the Add virtual path  var dirpath= "Server.MapPath (" ~/compress/ ")"; var filepath=getcompresspath (Dirpath,filespath);//returns the compressed file

C # DotNetZip Compressed single, multiple files, and folders