如何使用ZipPackage创建一个zip

问题描述

我已经在MSDN上看到有关的文档ZipPackage类.

I've seen the document on MSDN about the ZipPackage class.

这个例子不是很有用，任何人都可以提供有关此类的例子吗?

The example there is not very useful, can anyone provide an example about this class?

推荐答案

下面是一个示例，请注意:
-ZipPackage似乎不压缩
-生成的zip包含不需要的文件"[Content_Types] .xml"
- System.IO.Compression 因为.Net 4.5似乎是一个很好的选择

Here an example, note that:
- ZipPackage seem to do not compress
- The generated zip has an undesired file "[Content_Types].xml"
- System.IO.Compression since .Net 4.5 seems to be a good alternative

在Visual Studio中，您必须添加对"WindowsBase"的引用(不带前缀，如"System.IO".)

You have, in Visual Studio, to add reference to "WindowsBase" (without prefix like "System.IO.")

using System;
using System.Linq;
using System.Text;
using System.IO.Packaging;
using System.IO;

namespace TestZip
{
 public static class  Program
 {
  public static void Main(string[] args)
  {
   byte[] data = Encoding.UTF8.GetBytes(String.Join("\n", new string[1000].Select(s => "Something to zip.").ToArray()));
   byte[] zippedBytes;
   using(MemoryStream zipStream = new MemoryStream())
   {
    using (Package package = Package.Open(zipStream, FileMode.Create))
    {
     PackagePart document = package.CreatePart(new Uri("/test.txt", UriKind.Relative), "");
     using (MemoryStream dataStream = new MemoryStream(data))
     {
      document.GetStream().WriteAll(dataStream);
     }     
    }    
    zippedBytes = zipStream.ToArray();
   }
   File.WriteAllBytes("test.zip", zippedBytes);
  }

  private static void WriteAll(this Stream target, Stream source)
  {
   const int bufSize = 0x1000;
   byte[] buf = new byte[bufSize];
   int bytesRead = 0;
   while ((bytesRead = source.Read(buf, 0, bufSize)) > 0)
    target.Write(buf, 0, bytesRead);
  }
 }
}

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