C# -- 文件的压缩与解压（GZipStream）
文件的压缩与解压
需引入 System.IO.Compression;
1.C#代码（入门案例）
1 Console.WriteLine("压缩文件...............");
2 using (FileStream fr = File.OpenRead("d:\test.txt"))
3 {
4 using (FileStream fw = File.OpenWrite("d:\test.zip"))
5 {
6 using (GZipStream gz = new GZipStream(fw, CompressionMode.Compress))
7 {
8
9 byte[] by = new byte[1024 * 1024];
10 int r = fr.Read(by, 0, by.Length);
11 while (r > 0)
12 {
13 gz.Write(by, 0, r);
14 r = fr.Read(by, 0, r);
15 }
16 }
17 }
18 }
19 Console.WriteLine("压缩完成。");
20
21
22 Console.WriteLine("解压文件...............");
23 using (FileStream fr = File.OpenRead("d:\test.zip"))
24 {
25 using (GZipStream gz = new GZipStream(fr, CompressionMode.Decompress))
26 {
27 using (FileStream fw = File.OpenWrite("d:\test2.txt"))
28 {
29
30 byte[] by = new byte[1024 * 1024];
31 int r = gz.Read(by, 0, by.Length);
32 while (r > 0)
33 {
34 fw.Write(by, 0, r);
35 r = gz.Read(by, 0, r);
36 }
37 }
38 }
39 }
40 Console.WriteLine("解压完成。");
41
42 Console.ReadKey();
2. 运行结果
