通过System.IO.Packaging实现打包和解包

微软提供了System.IO.Packaging类库用于打包和解包，这样文件的打包和解包就很方便了，代码如下：

 1     class Program {
 2         static string sourceFolder = @"d:\source";
 3         static string targetFolder = @"d:\target";
 4         static string pkgFile = @"d:\package.pkg";
 5 
 6         static void Main(string[] args) {
 7             CreatePackage();
 8 
 9             //ExtractPackage();
10 
11             Console.WriteLine("press any key to exits.");
12             Console.ReadLine();
13         }
14 
15         static void CreatePackage() {
16             using (Package pkg = Package.Open(pkgFile, FileMode.Create)) {
17                 var files = PathResolver.ResolveSearchPattern(sourceFolder, @"**\*.*", null);
18                 foreach (var each in files) {
19                     Uri partUri = UriUtility.CreatePartUri(each.TargetPath);
20                     PackagePart pkgpart = pkg.CreatePart(partUri, MediaTypeNames.Application.Octet, CompressionOption.Maximum);
21                     using (FileStream fs = File.OpenRead(each.SourcePath)) {
22                         fs.CopyTo(pkgpart.GetStream());
23                     }
24                 }
25             }
26         }
27 
28         static void ExtractPackage() {
29             if (Directory.Exists(targetFolder)) {
30                 Directory.Delete(targetFolder, true);
31             }
32 
33             using (Package pkg = Package.Open(pkgFile, FileMode.Open)) {
34                 foreach (var each in pkg.GetParts()) {
35                     string relativePath = Uri.UnescapeDataString(each.Uri.ToString().TrimStart('/'));
36                     string absolutePath = Path.Combine(targetFolder, relativePath);
37                     Directory.CreateDirectory(Path.GetDirectoryName(absolutePath));
38 
39                     using (FileStream fs = new FileStream(absolutePath, FileMode.Create)) {
40                         each.GetStream().CopyTo(fs);
41                     }
42                 }
43             }
44         }
45     }

说明：

1. sourceFolder为需要打包的目录，targetFolder为解包的目录，pkgFile为打包的文件名。

2. 37行的Directory.CreateDirectory用于创建解包的根目录和下面可能有的子目录。

3. 代码中用到的PathResolver和UriUtility均取自Nuget代码。

4. 代码下载