解压缩ZIP文件在Windows 8上C＃ [英] decompress a ZIP file on windows 8 C#

问题描述

我正在为windows 8建立一个metro风格的应用程式，而且我已经从网路服务下载了一个zip档案，我要解压缩。

我已经看到了压缩和解压缩的示例，但是需要一个文件压缩/解压缩它。我有一个完整的目录结构，我需要提取。

这里是我到目前为止：

  var appData = ApplicationData.Current; 
 var file = await appData.LocalFolder.GetItemAsync（thezip.zip）as StorageFile; 
 var decompressedFile = await ApplicationData.Current.LocalFolder.CreateFileAsync（tempFileName，CreationCollisionOption.GenerateUniqueName）; 
 using（var decompressor = new Decompressor（await file.OpenSequentialReadAsync（）））
 using（var decompressedOutput = await decompressedFile.OpenAsync（FileAccessMode.ReadWrite））
 {
 var bytesDecompressed = await RandomAccessStream.CopyAsync（decompressor，decompressedOutput）; 
} 
  

但这不好， bytesDecompressed 变量始终为零大小，但zip文件为1.2MB

任何帮助都将非常感激。

编辑：回答，感谢 Mahantesh

这是解压文件的代码：

  private async void UnZipFile（）
 {
 var folder = ApplicationData.Current.LocalFolder; 
 
 using（var zipStream = await folder.OpenStreamForReadAsync（thezip.zip））
 {
 using（MemoryStream zipMemoryStream = new MemoryStream（（int）zipStream.Length）） 
 {
 await zipStream.CopyToAsync（zipMemoryStream）; 
 
使用（var archive = new ZipArchive（zipMemoryStream，ZipArchiveMode.Read））
 {
 foreach（archive.Entries中的ZipArchiveEntry条目）
 {
 if（entry.Name！=）
 {
 using（Stream fileData = entry.Open（））
 {
 StorageFile outputFile = await folder.CreateFileAsync（entry.Name ，CreationCollisionOption.ReplaceExisting）; 
 using（Stream outputFileStream = await outputFile.OpenStreamForWriteAsync（））
 {
 await fileData.CopyToAsync（outputFileStream）; 
 await outputFileStream.FlushAsync（）; 
} 
} 
} 
} 
} 
} 
} 
} 
  
 
 
解决方案
在Metro风格的应用程序中，使用ZipArchive，ZipArchiveEntry，DeflateStream ，和GZipStream类。
 
 
 
请参阅：在地铁中解压缩文件 
 
 
 
参考：在地铁c中解压缩zip / unzip  
 
I am building a metro style app for windows 8 and I have a zip file that I am downloading from a web service, and I want to extract it.

I have seen the sample for compression and decompression, but that takes a single file an compresses/decompresses it. I have a whole directory structure that I need to extract.

Here is what I have so far:
var appData = ApplicationData.Current;
var file = await appData.LocalFolder.GetItemAsync("thezip.zip") as StorageFile;
var decompressedFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("tempFileName", CreationCollisionOption.GenerateUniqueName);
using (var decompressor = new Decompressor(await file.OpenSequentialReadAsync()))
using (var decompressedOutput = await decompressedFile.OpenAsync(FileAccessMode.ReadWrite))
{
    var bytesDecompressed = await RandomAccessStream.CopyAsync(decompressor, decompressedOutput);
}
But this is no good, the bytesDecompressed variable is always zero size, but the zip File is 1.2MB

Any help here would be greatly appreciated.

EDIT: Answer, thanks to Mahantesh

Here is the code for unzipping a file:
private async void UnZipFile()
{
    var folder = ApplicationData.Current.LocalFolder;

    using (var zipStream = await folder.OpenStreamForReadAsync("thezip.zip"))
    {
        using (MemoryStream zipMemoryStream = new MemoryStream((int)zipStream.Length))
        {
            await zipStream.CopyToAsync(zipMemoryStream);

            using (var archive = new ZipArchive(zipMemoryStream, ZipArchiveMode.Read))
            {
                foreach (ZipArchiveEntry entry in archive.Entries)
                {
                    if (entry.Name != "")
                    {
                        using (Stream fileData = entry.Open())
                        {
                            StorageFile outputFile = await folder.CreateFileAsync(entry.Name, CreationCollisionOption.ReplaceExisting);
                            using (Stream outputFileStream = await outputFile.OpenStreamForWriteAsync())
                            {
                                await fileData.CopyToAsync(outputFileStream);
                                await outputFileStream.FlushAsync();
                            }
                        }
                    }
                }
            }
        }
    }
}

解决方案
In Metro style apps, you work with compressed files by using the methods in the ZipArchive, ZipArchiveEntry, DeflateStream, and GZipStream classes.

Refer : UnZip File in Metro

Refer : Folder zip/unzip in metro c#

                        
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