如何将文件添加到现有的zip压缩包 [英] How do I add files to an existing zip archive

问题描述

我怎样才能某些文件（几乎总是一个.csv文件）添加到现有的zip文件？

How can I add some file (almost always a single .csv file) to an existing zip file?

推荐答案

由于你是在.NET 4.5，可以使用ZipArchive（System.IO.Compression）类来实现这一目标。下面是MSDN文档：（ MSDN ）。

Since you are in .NET 4.5, you can use the ZipArchive (System.IO.Compression) class to achieve this. Here is the MSDN documentation: (MSDN).

下面是他们的榜样，它只是写的文字，但你可以在.csv文件中读取并写入到新的文件。只是在复制文件，你可以使用 CreateFileFromEntry ，这是一个扩展方法 ZipArchive 。

Here is their example, it just writes text, but you could read in a .csv file and write it out to your new file. To just copy the file in, you would use CreateFileFromEntry, which is an extension method for ZipArchive.

using (FileStream zipToOpen = new FileStream(@"c:\users\exampleuser\release.zip", FileMode.Open))
{
   using (ZipArchive archive = new ZipArchive(zipToOpen, ZipArchiveMode.Update))
   {
       ZipArchiveEntry readmeEntry = archive.CreateEntry("Readme.txt");
       using (StreamWriter writer = new StreamWriter(readmeEntry.Open()))
       {
           writer.WriteLine("Information about this package.");
           writer.WriteLine("========================");
       }
   }
}

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