//使用DeflateStream壓縮和解壓縮文件

namespace 壓縮流1
{
??? class Program
??? {
??????? static void Main(string[] args)
??????? {
??????????? FileStream fs;
??????????? DeflateStream deflate;
??????????? FileInfo myFile;
??????????? string originalXML = "original.xml";
??????????? string compressedXML = "commpressed";
??????????? string decompressedXML = "decommpressed.xml";
??????????? DataSet ds = new DataSet();

??????????? myFile = new FileInfo(originalXML);
??????????? Console.WriteLine("原文件{0}中包含{1}字節", myFile.Name, myFile.Length.ToString());
??????????? ds.ReadXml(originalXML);
??????????? //創建一個文件
??????????? fs = new FileStream(compressedXML, FileMode.Create, FileAccess.Write);
??????????? //對文件進行壓縮
??????????? deflate = new DeflateStream(fs, CompressionMode.Compress);
??????????? //保存XML文件
??????????? ds.WriteXml(deflate);
??????????? //關閉流
??????????? deflate.Close();

??????????? myFile = new FileInfo(compressedXML);
??????????? Console.WriteLine("文件被壓縮成{0}字節，存放在{1}中", myFile.Length.ToString(), myFile.Name);
??????????? //創建一個文件
??????????? fs = new FileStream(compressedXML, FileMode.Open, FileAccess.Read);
??????????? //對文件進行解壓
??????????? deflate = new DeflateStream(fs, CompressionMode.Decompress);

??????????? ds = new DataSet();
??????????? ds.ReadXml(deflate);
??????????? ds.WriteXml(decompressedXML);

??????????? myFile = new FileInfo(decompressedXML);
??????????? Console.WriteLine("文件被解壓成{0}字節，存放在{1}中", myFile.Length.ToString(), myFile.Name);
???????????

??????????? Console.ReadLine();
??????? }
??? }

?

?

//使用GZipStream壓縮和解壓縮文件，與上一個基本一樣

using System.IO;
using System.IO.Compression;
using System.Data;

namespace 壓縮流2
{
??? class Program
??? {
??????? static void Main(string[] args)
??????? {
??????????? //GZipStream解壓縮文件
??????????? FileStream fs;
??????????? GZipStream gzip;
??????????? FileInfo myFile;
??????????? string originalXML = "original.xml";
??????????? string compressedXML = "originalGZip.gz";
??????????? string decompressedXML = "UnZip.xml";
??????????? DataSet ds = new DataSet();

??????????? myFile = new FileInfo(originalXML);
??????????? Console.WriteLine("原文件{0}中包含{1}字節", myFile.Name, myFile.Length.ToString());
??????????? ds.ReadXml(originalXML);

??????????? //壓縮
??????????? fs = new FileStream(compressedXML, FileMode.Create, FileAccess.Write);
??????????? gzip = new GZipStream(fs, CompressionMode.Compress);
??????????? ds.WriteXml(gzip);
??????????? gzip.Close();

??????????? myFile = new FileInfo(compressedXML);
??????????? Console.WriteLine("文件被壓縮成{0}字節，存放在{1}中", myFile.Length.ToString(), myFile.Name);

??????????? fs = new FileStream(compressedXML, FileMode.Open, FileAccess.Read);
??????????? gzip = new GZipStream(fs, CompressionMode.Decompress);

??????????? ds = new DataSet();
??????????? ds.ReadXml(gzip);
??????????? ds.WriteXml(decompressedXML);

??????????? myFile = new FileInfo(decompressedXML);
??????????? Console.WriteLine("文件被解壓成{0}字節，存放在{1}中", myFile.Length.ToString(), myFile.Name);
??????????? Console.ReadLine();
??????? }
??? }
}

轉載于:https://www.cnblogs.com/zxktxj/archive/2012/04/09/2438997.html

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