首先需要在项目里引用SharpZipLib.dll。然后修改其中的关于压缩和解压缩的类。实现源码如下：
/**/ /// <summary> /// 压缩文件 /// </summary> using System; using System.IO; using ICSharpCode.SharpZipLib.Checksums; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.GZip; namespace Compression ... { public class ZipClass ...{ public void ZipFile(string FileToZip, string ZipedFile ,int CompressionLevel, int BlockSize) ...{ //如果文件没有找到，则报错 if (! System.IO.File.Exists(FileToZip)) ...{ throw new System.IO.FileNotFoundException("The specified file " + FileToZip + " could not be found. Zipping aborderd"); } System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip,System.IO.FileMode.Open , System.IO.FileAccess.Read); System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile); ZipOutputStream ZipStream = new ZipOutputStream(ZipFile); ZipEntry ZipEntry = new ZipEntry("ZippedFile"); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(CompressionLevel); byte[] buffer = new byte[BlockSize]; System.Int32 size =StreamToZip.Read(buffer,0,buffer.Length); ZipStream.Write(buffer,0,size); try ...{ while (size < StreamToZip.Length) ...{ int sizeRead =StreamToZip.Read(buffer,0,buffer.Length); ZipStream.Write(buffer,0,sizeRead); size += sizeRead; } } catch(System.Exception ex) ...{ throw ex; } ZipStream.Finish(); ZipStream.Close(); StreamToZip.Close(); } public void ZipFileMain(string[] args) ...{ string[] filenames = Directory.GetFiles(args[0]); Crc32 crc = new Crc32(); ZipOutputStream s = new ZipOutputStream(File.Create(args[1])); s.SetLevel(6); // 0 - store only to 9 - means best compression foreach (string file in filenames) ...{ //打开压缩文件 FileStream fs = File.OpenRead(file); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); ZipEntry entry = new ZipEntry(file); entry.DateTime = DateTime.Now; // set Size and the crc, because the information // about the size and crc should be stored in the header // if it is not set it is automatically written in the footer. // (in this case size == crc == -1 in the header) // Some ZIP programs have problems with zip files that don't store // the size and crc in the header. entry.Size = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; s.PutNextEntry(entry); s.Write(buffer, 0, buffer.Length); } s.Finish(); s.Close(); } }}
现在再来看看解压文件类的源码
有了压缩和解压缩的类以后，就要在窗体里调用了。怎么？是新手，不会调用？Ok,接着往下看如何在窗体里调用。
首先在窗体里放置两个命令按钮（不要告诉我你不会放啊~），然后编写以下源码
/// <summary> /// 调用源码 /// </summary>
private void button2_Click_1(object sender, System.EventArgs e) { string []FileProperties=new string[2]; FileProperties[0]="C:/unzipped/";//待压缩文件目录 FileProperties[1]="C:/zip/a.zip"; //压缩后的目标文件 ZipClass Zc=new ZipClass(); Zc.ZipFileMain(FileProperties); }
private void button2_Click(object sender, System.EventArgs e) { string []FileProperties=new string[2]; FileProperties[0]="C:/zip/test.zip";//待解压的文件 FileProperties[1]="C:/unzipped/";//解压后放置的目标目录 UnZipClass UnZc=new UnZipClass(); UnZc.UnZip(FileProperties); }
好了，到此为止，如何压缩和解压缩的类都已经完成了
