如何壓縮文件

Question

我想壓縮文件，並在C＃中的目錄。我在互聯網上找到了一些解決方案，但它們非常複雜，我無法在我的項目中運行它們。任何人都可以向我建議一個清晰有效的解決方案嗎

Answer 1

http://www.icsharpcode.net/opensource/sharpziplib/

Answer 2

使用http://dotnetzip.codeplex.com/ zip文件或目錄，也沒有內建類直接在.NET做

Answer 3

有在System.IO.Packaging一個內置類稱爲ZipPackage：

http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage(v=vs.100).aspx

Answer 4

您可以在System.IO.Compression名稱空間中使用GZipStream

.NET 2.0.

public static void CompressFile(string path) 
{ 
    FileStream sourceFile = File.OpenRead(path); 
    FileStream destinationFile = File.Create(path + ".gz"); 

    byte[] buffer = new byte[sourceFile.Length]; 
    sourceFile.Read(buffer, 0, buffer.Length); 

    using (GZipStream output = new GZipStream(destinationFile, 
     CompressionMode.Compress)) 
    { 
     Console.WriteLine("Compressing {0} to {1}.", sourceFile.Name, 
      destinationFile.Name, false); 

     output.Write(buffer, 0, buffer.Length); 
    } 

    // Close the files. 
    sourceFile.Close(); 
    destinationFile.Close(); 
} 

.NET 4

public static void Compress(FileInfo fi) 
    { 
     // Get the stream of the source file. 
     using (FileStream inFile = fi.OpenRead()) 
     { 
      // Prevent compressing hidden and 
      // already compressed files. 
      if ((File.GetAttributes(fi.FullName) 
       & FileAttributes.Hidden) 
       != FileAttributes.Hidden & fi.Extension != ".gz") 
      { 
       // Create the compressed file. 
       using (FileStream outFile = 
          File.Create(fi.FullName + ".gz")) 
       { 
        using (GZipStream Compress = 
         new GZipStream(outFile, 
         CompressionMode.Compress)) 
        { 
         // Copy the source file into 
         // the compression stream. 
        inFile.CopyTo(Compress); 

         Console.WriteLine("Compressed {0} from {1} to {2} bytes.", 
          fi.Name, fi.Length.ToString(), outFile.Length.ToString()); 
        } 
       } 
      } 
     } 
    } 

http://msdn.microsoft.com/en-us/library/ms404280.aspx

Answer 5

Source code taken from MSDN that is compatible to .Net 2.0 and above

public static void CompressFile(string path) 
     { 
      FileStream sourceFile = File.OpenRead(path); 
      FileStream destinationFile = File.Create(path + ".gz"); 

      byte[] buffer = new byte[sourceFile.Length]; 
     sourceFile.Read(buffer, 0, buffer.Length); 

     using (GZipStream output = new GZipStream(destinationFile, 
      CompressionMode.Compress)) 
     { 
      Console.WriteLine("Compressing {0} to {1}.", sourceFile.Name, 
       destinationFile.Name, false); 

      output.Write(buffer, 0, buffer.Length); 
     } 

     // Close the files. 
     sourceFile.Close(); 
     destinationFile.Close(); 
    } 

Answer 6

你可以使用MS-DOS命令在線程序compact.exe。 查找上的參數compact.exe在cmd並使用.NET方法的Process.Start（啓動此過程）。

Answer 7

我加入這個答案，因爲我發現比現有的任何答案更簡單的方法：

1. 在解決方案安裝DotNetZip的DLL（最簡單的方法就是安裝the package從的NuGet）
2. 添加對DLL的引用。
3. 通過添加導入名稱空間：使用Ionic.Zip;
4. 郵編文件

代碼：

using (ZipFile zip = new ZipFile()) 
{ 
    zip.AddFile("C:\test\test.txt"); 
    zip.AddFile("C:\test\test2.txt"); 
    zip.Save("C:\output.zip"); 
} 

如果你不想在zip文件反映了原來的文件夾結構，然後再看看的替換值AddFile（）和AddFolder（）等

Answer 8

使用DotNetZip http://dotnetzip.codeplex.com/，還有對zip文件類的AddDirectory（）方法，你想要做什麼：

using (var zip = new Ionic.Zip.ZipFile()) 
{ 
    zip.AddDirectory("DirectoryOnDisk", "rootInZipFile"); 
    zip.Save("MyFile.zip"); 
} 

Bonne繼續...

Answer 9

只需使用以下代碼來壓縮文件。

 public void Compressfile() 
     { 
      string fileName = "Text.txt"; 
      string sourcePath = @"C:\SMSDBBACKUP"; 
      DirectoryInfo di = new DirectoryInfo(sourcePath); 
      foreach (FileInfo fi in di.GetFiles()) 
      { 
       //for specific file 
       if (fi.ToString() == fileName) 
       { 
        Compress(fi); 
       } 
      } 
     } 

public static void Compress(FileInfo fi) 
     { 
      // Get the stream of the source file. 
      using (FileStream inFile = fi.OpenRead()) 
      { 
       // Prevent compressing hidden and 
       // already compressed files. 
       if ((File.GetAttributes(fi.FullName) 
        & FileAttributes.Hidden) 
        != FileAttributes.Hidden & fi.Extension != ".gz") 
       { 
        // Create the compressed file. 
        using (FileStream outFile = 
           File.Create(fi.FullName + ".gz")) 
        { 
         using (GZipStream Compress = 
          new GZipStream(outFile, 
          CompressionMode.Compress)) 
         { 
          // Copy the source file into 
          // the compression stream. 
          inFile.CopyTo(Compress); 

          Console.WriteLine("Compressed {0} from {1} to {2} bytes.", 
           fi.Name, fi.Length.ToString(), outFile.Length.ToString()); 
         } 
        } 
       } 
      } 
     } 

    }